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Accession number:20180404675575
Title:Stand-off laser Raman spectroscopy and its advancement in explosives detection
Authors:Liu, Sheng-Run (1, 2); Xue, Bin (1, 2); Li, Yi-Zhe (1, 2); Wang, Hui (3)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'an, Shaanxi; 710119, China; (2) College of Materials Science and Opto-Electronic Tech, University of Chinese Academy of Science, Beijing; 101408, China; (3) Science and Technology on Near-Surface Detection Laboratory, Wuxi; 214035, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10461
Part number:1 of 1
Issue title:AOPC 2017: Optical Spectroscopy and Imaging
Issue date:2017
Publication year:2017
Article number:1046116
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614031
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Spectroscopy and Imaging, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133395
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:The explosives detection has been a hot and difficult issue in the field of security?1/4it is particularly important to detect explosives quickly and reliably. There are many methods to detect explosives currently, stand-off Raman spectroscopy is one of the most promising and practical technologies, this technique can be used for non-contact and nondestructive detection, ensure the safety of attendants, at the same time the precision and speed of detection are also very high and be characterized by rapid response. This paper mainly gives an account of the fundamental principle of Raman spectroscopy, as well as recount major challenges of Standoff Laser Raman Spectroscopy applied in explosives detection and corresponding solutions. From the perspective of the system, this paper sums up related theories and techniques of the excitation laser and telescopic system etc. Ultimately, a brief analysis and summary of the development trend of this technology is given. COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:19
Main heading:Explosives detection
Controlled terms:Explosives - Laser excitation - Laser spectroscopy - Raman spectroscopy
Uncontrolled terms:Advancement - Corresponding solutions - Development trends - Fundamental principles - Laser Raman spectroscopy - Nondestructive detection - Standoff - Telescopic systems
Classification code:741.3 Optical Devices and Systems - 801 Chemistry - 801.4 Physical Chemistry
DOI:10.1117/12.2285181
Funding details: Number: 6142414070114, Acronym: -, Sponsor: -;
Funding text:This work has been sponsored in part by Science and Technology on Near-Surface Detection Laboratory (No.6142414070114)

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<2>
Accession number:20171703602836
Title:Heterogeneous Face Recognition: A Common Encoding Feature Discriminant Approach
Authors:Gong, Dihong (1); Li, Zhifeng (1); Huang, Weilin (1); Li, Xuelong (2); Tao, Dacheng (3)
Author affiliation:(1) Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen; 518055, China; (2) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (3) School of Information Technologies, Faculty of Engineering and Information Technologies, University of Sydney, Darlington; NSW; 2008, Australia
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:5
Issue date:May 2017
Publication year:2017
Pages:2079-2089
Article number:7812744
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Heterogeneous face recognition is an important, yet challenging problem in face recognition community. It refers to matching a probe face image to a gallery of face images taken from alternate imaging modality. The major challenge of heterogeneous face recognition lies in the great discrepancies between different image modalities. Conventional face feature descriptors, e.g., local binary patterns, histogram of oriented gradients, and scale-invariant feature transform, are mostly designed in a handcrafted way and thus generally fail to extract the common discriminant information from the heterogeneous face images. In this paper, we propose a new feature descriptor called common encoding model for heterogeneous face recognition, which is able to capture common discriminant information, such that the large modality gap can be significantly reduced at the feature extraction stage. Specifically, we turn a face image into an encoded one with the encoding model learned from the training data, where the difference of the encoded heterogeneous face images of the same person can be minimized. Based on the encoded face images, we further develop a discriminant matching method to infer the hidden identity information of the cross-modality face images for enhanced recognition performance. The effectiveness of the proposed approach is demonstrated (on several public-domain face datasets) in two typical heterogeneous face recognition scenarios: matching NIR faces to VIS faces and matching sketches to photographs. 1992-2012 IEEE.
Number of references:41
Main heading:Face recognition
Controlled terms:Encoding (symbols) - Image coding - Image enhancement - Signal encoding
Uncontrolled terms:Discriminant informations - Feature descriptors - Feature extraction stages - Heterogeneous face recognition - Histogram of oriented gradients - Identity information - Local binary patterns - Scale invariant feature transforms
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing
DOI:10.1109/TIP.2017.2651380

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20170903385629
Title:Meta-nanocavity model for dynamic super-resolution fluorescent imaging based on the plasmonic structure illumination microscopy method
Authors:Cao, Shun (1, 2); Wang, Taisheng (1); Sun, Qiang (1); Hu, Bingliang (1); Yu, Weixing (3)
Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No.3888, Dongnanhu Road, Changchun; Jilin, China; (2) University of the Chinese Academy of Sciences, Beijing; 10039, China; (3) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17, Xinxi Road, Xian; 710119, China
Corresponding author:Yu, Weixing(yuwx@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:4
Issue date:February 20, 2017
Publication year:2017
Pages:3863-3874
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Biological research requires dynamic and wide-field optical microscopy with resolution down to nanometer to study the biological process in a sub-cell or single molecular level. To address this issue, we propose a dynamic wide-field optical nanoimaging method based on a meta-nanocavity platform (MNCP) model which can be incorporated in micro/nano-fluidic systems so that the samples to be observed can be confined in a nano-scale space for the ease of imaging. It is found that this platform can support standing wave surface plasmons (SW-SPs) interference pattern with a period of 105 nm for a 532 nm incident wavelength. Furthermore, the potential application of the NCP for wide-field super-resolution imaging was discussed and the simulation results show that an imaging resolution of sub-80 nm can be achieved. 2017 Optical Society of America.
Number of references:47
Main heading:Fluorescence imaging
Controlled terms:Nanotechnology - Optical resolving power - Plasmonics - Surface plasmons
Uncontrolled terms:Biological process - Biological research - Fluorescent imaging - Imaging resolutions - Incident wavelength - Interference patterns - Super resolution - Super resolution imaging
Classification code:741.1 Light/Optics - 761 Nanotechnology
Numerical data indexing:Size 1.05e-07m, Size 5.32e-07m
DOI:10.1364/OE.25.003863
Funding details: Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475156, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61361166004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 20140519002JH, Acronym: -, Sponsor: Department of Finance of Jilin Province;
Funding text:National Science Foundation of China (NSFC) (61361166004, 61475156) and Technology Department of Jilin Province (20140519002JH).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20172303738779
Title:Wavelength-switchable passively mode-locked fiber laser with mechanically exfoliated molybdenum ditelluride on side-polished fiber
Authors:Wang, Guomei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Wang, Guomei(wangguomei@opt.cn)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:96
Issue date:November 1, 2017
Publication year:2017
Pages:307-312
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:We experimentally investigated the nonlinear saturable absorption characteristics of molybdenum ditelluride (MoTe2) and demonstrated a wavelength-switchable mode-locked erbium-doped fiber laser (EDFL) by using MoTe2thin film on side-polished fiber (SPF) as saturable absorber. Here, the MoTe2thin film was efficiently fabricated via mechanical exfoliation method and transferred onto the SPF with the assistance of polydimethylsiloxane (PDMS). MoTe2-covered SPF (MSPF) exhibits the nonlinear saturable absorption for pulses with different polarization states. Optical solitons with spectral bandwidth of 1.06 (1.31) nm centered at ~1559 (~1528) nm and pulse duration of 2.46 (2.04) ps can be obtained from the EDFL by adjusting the polarization controller (PC) properly. The time-bandwidth product (TBP) of the pulses was calculated as 0.322 (0.344). 2017 Elsevier Ltd
Number of references:59
Main heading:Mode-locked fiber lasers
Controlled terms:Bandwidth - Fiber lasers - Fibers - Molybdenum compounds - Passive mode locking - Polarization - Polydimethylsiloxane - Saturable absorbers - Semiconductor quantum wells - Silicones - Tellurium compounds - Thin films
Uncontrolled terms:Erbium doped fiber laser - Mechanical exfoliation - Molybdenum ditelluride - Passively mode-locked fiber lasers - Polarization controllers - Polydimethylsiloxane PDMS - Saturable absorption - Time-bandwidth products
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 744.1 Lasers, General - 744.4 Solid State Lasers - 815.1.1 Organic Polymers
DOI:10.1016/j.optlastec.2017.05.030
Funding details: Number: 2015KCT-06, Acronym: -, Sponsor: -;Number: 61525505, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant Agreements 61525505 and by the Key Scientific and Technological Innovation Team Project in Shaanxi Province (2015KCT-06).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20174604395652
Title:Imaging through a scattering medium based on spatial transmission matrix
Authors:Zhuang, Bin (1, 2); Xu, Chengfang (1, 2); Geng, Yi (1, 2); Zhao, Guangzhi (1, 2); Zhou, Libin (3); He, Zhengquan (1); Ren, Liyong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, China; (2) University of Chinese, Academy of Sciences, China; (3) Shaanxi University of Science and Technology, China
Source title:Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Abbreviated source title:Progr. Biomed. Opt. Imaging Proc. SPIE
Volume:10416
Part number:1 of 1
Issue title:Optical Coherence Imaging Techniques and Imaging in Scattering Media II
Issue date:2017
Publication year:2017
Article number:104160D
Language:English
ISSN:16057422
ISBN-13:9781510612907
Document type:Conference article (CA)
Conference name:Optical Coherence Imaging Techniques and Imaging in Scattering Media II 2017
Conference date:June 25, 2017 - June 29, 2017
Conference location:Munich, Germany
Conference code:131573
Sponsor:The Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:The inhomogeneity of scattering medium distorts the propagation of the waves, which has been detrimental to the performance of optical imaging. The operating time of the traditional solutions will be very long as the scanning is necessary during the imaging. A recovery solution based on spatial optical transmission matrix has been proposed. With the acquiring of the spatial optical transmission matrix, the incident object wave will be recovered directly from the distorted transmitted wave, in this way, only a single shot is needed during the imaging. The effectiveness of this method has been proved by the simulation and experiment, the principle is simpler and the algorithm is more efficient, which are beneficial to the imaging through the scattering medium. 2017 SPIE.
Number of references:11
Main heading:Coherent scattering
Controlled terms:Light transmission
Uncontrolled terms:Inhomogeneities - Object waves - Operating time - Optical imaging - Optical transmission matrix - Scattering medium - Spatial transmission - Transmitted waves
Classification code:711 Electromagnetic Waves - 741.1 Light/Optics
DOI:10.1117/12.2285014
Funding details: Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China (Grants No. 61535015 and 61275086).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20171403544904
Title:Stochastic resonance based on modulation instability in spatiotemporal chaos
Authors:Han, Jing (1, 2); Liu, Hongjun (1, 3); Huang, Nan (1); Wang, Zhaolu (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100084, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China
Corresponding author:Liu, Hongjun(liuhongjun@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:7
Issue date:April 3, 2017
Publication year:2017
Pages:8306-8314
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A novel dynamic of stochastic resonance in spatiotemporal chaos is presented, which is based on modulation instability of perturbed partially coherent wave. The noise immunity of chaos can be reinforced through this effect and used to restore the coherent signal information buried in chaotic perturbation. A theoretical model with fluctuations term is derived from the complex Ginzburg-Landau equation via Wigner transform. It shows that through weakening the nonlinear threshold and triggering energy redistribution, the coherent component dominates the instability damped by incoherent component. The spatiotemporal output showing the properties of stochastic resonance may provide a potential application of signal encryption and restoration. 2017 Optical Society of America.
Number of references:28
Main heading:Stochastic systems
Controlled terms:Circuit resonance - Cryptography - Magnetic resonance - Modulation - Restoration - Signal reconstruction
Uncontrolled terms:Coherent components - Complex Ginzburg-Landau equation - Energy re distributions - Modulation instabilities - Non-linear thresholds - Spatiotemporal chaos - Stochastic resonances - Theoretical modeling
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.1 Electric Networks - 716.1 Information Theory and Signal Processing - 961 Systems Science
DOI:10.1364/OE.25.008306
Funding details: Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: QNLM2016ORP0111, Acronym: QNLM, Sponsor: Qingdao National Laboratory for Marine Science and Technology;
Funding text:National Natural Science Foundation of China (NSFC) 61275134; Qingdao National Laboratory for Marine Science and Technology (QNLM2016ORP0111).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20171603579362
Title:Two-dimensional simulation of argon dielectric barrier discharge excited by a Gaussian voltage at atmospheric pressure
Authors:Xu, Yonggang (1, 2); Wang, Jing (2); Li, Jing (2, 3); Lei, Bingying (2); Tang, Jie (2); Wang, Yishan (2); Li, Yongfang (1); Zhao, Wei (2); Duan, Yixiang (2, 4)
Author affiliation:(1) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian; 223003, China; (4) Research Center of Analytical Instrumentation, College of Life Sciences, Sichuan University, Chengdu; 610064, China
Corresponding author:Tang, Jie(tangjie1979@opt.ac.cn)
Source title:Physics of Plasmas
Abbreviated source title:Phys. Plasmas
Volume:24
Issue:4
Issue date:April 1, 2017
Publication year:2017
Article number:043507
Language:English
ISSN:1070664X
E-ISSN:10897674
CODEN:PHPAEN
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:A two-dimensional self-consistent fluid model was employed to investigate the spatiotemporal characteristics of discharges in atmospheric pressure argon (Ar) dielectric barrier discharge driven by a Gaussian voltage. The simulation results show that a discharge with multiple current pulses occurs each half-cycle in the gas gap. A transition from the Townsend mode to the glow mode is observed with the increasing applied voltage each half-cycle at a lower driving frequency (7.5 kHz). It is also found that the glow mode survives all the discharge phases at a higher driving frequency (12.5 kHz and 40 kHz). The change in the discharge mode with the driving frequency mainly lies in the fact that a lot of charged particles created in the discharge gap have no enough time to drift and diffuse around, and then these particles are assembled in the discharge space at higher frequency. Additionally, the spatial distributions of the electron density indicate that a center-advantage discharge is ignited at the driving frequencies of interest, resulting in the radial non-uniformity of discharge because of the edge effects. However, this overall non-uniformity is weakened with the driving frequency increased to 40 kHz, at which concentric ring patterns are observed. These distinct behaviors are mainly attributed to the fact that many charged particles generated are trapped in the gas gap and then accumulated to make the extension along the radial direction due to the charged particles transport and diffusion, and that the effective overlapping of a large number of avalanches induced by the increased “seed” electron density with the driving frequency. Meanwhile, the surface charged particles accumulated on the dielectric barriers are also shown to play a role in the formation of the discharge structure. 2017 Author(s).
Number of references:58
Main heading:Dielectric materials
Controlled terms:Argon - Atmospheric pressure - Carrier concentration - Charged particles - Dielectric devices - Electron density measurement - Flow control - Glow discharges
Uncontrolled terms:Charged particles transport - Concentric ring patterns - Dielectric barrier discharges - Discharge structures - Driving frequencies - Higher frequencies - Spatiotemporal characteristics - Two-dimensional simulations
Classification code:443.1 Atmospheric Properties - 631.1 Fluid Flow, General - 701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 804 Chemical Products Generally
Numerical data indexing:Frequency 1.25e+04Hz, Frequency 4.00e+04Hz, Frequency 7.50e+03Hz
DOI:10.1063/1.4979898
Funding details: Number: 2011YQ030113, Acronym: -, Sponsor: -;Number: XAB2015A08, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2015JM1019, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;
Funding text:This work was supported by the National Major Scientific Instruments and Equipment Development Special Funds (Grant No. 2011YQ030113), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2015JM1019), and the CAS ?Light of West China? Program (Grant No. XAB2015A08).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20171303489950
Title:Nanosecond passively Q-switched Nd:YVO4laser based on WS2saturable absorber
Authors:Wang, Xi (1); Li, Lu (1); Wang, Yonggang (1, 2); Zhang, Ling (3); Wen, Qiao (4); Yang, Guowen (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (3) Laboratory of All-solid-state Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China; (4) Key Laboratory of Optoelectronic Devices and Systems, Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:27
Issue:4
Issue date:April 2017
Publication year:2017
Article number:045802
Language:English
ISSN:1054660X
E-ISSN:15556611
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:We report on a nanosecond pulse generation in a diode end-pumped passively Q-switched Nd:YVO4laser using a tungsten disulfide (WS2) solution saturable absorber (SA). The WS2suspension is fabricated by the liquid-phase-exfoliated method and injected into a quartz cell for the use of SA. Compared with solid absorber, such solution absorber has the virtues of good optical transparency, high heat dissipation and long term stability. By inserting the WS2solution SA in the laser cavity, a stable Q-switched laser operation centered at 1064.45 nm wavelength is obtained with the shortest pulse duration of 788 ns and corresponding repetition rate of 333.5 kHz. The maximum average output power is registered to be 720 mW with the slope efficiency of 7.8%. To the best of our knowledge, it is the highest output power so far among pulsed lasers based on transition metal dichalcogenides (TMDs) SAs. The results demonstrate that WS2solution absorber is a promising saturable absorber for the generation of high output power pulsed lasers. 2017 Astro Ltd Printed in the UK.
Number of references:46
Main heading:Pulsed lasers
Controlled terms:Neodymium compounds - Optical materials - Optical pumping - Pulse repetition rate - Q switched lasers - Q switching - Saturable absorbers - Single crystals - Solid state lasers - Sulfur compounds - Transition metals - Tungsten compounds
Uncontrolled terms:Average output power - Long term stability - Nanosecond pulse generation - Non-linear optical material - Optical transparency - Passively Q-switched - Slope efficiencies - Transition metal dichalcogenides
Classification code:531 Metallurgy and Metallography - 741.3 Optical Devices and Systems - 744 Lasers - 933.1 Crystalline Solids
Numerical data indexing:Frequency 3.34e+05Hz, Percentage 7.80e+00%, Power 7.20e-01W, Size 1.06e-06m, Time 7.88e-07s
DOI:10.1088/1555-6611/aa5f90
Funding details: Number: SKLST201403, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by National Natural Science Foundation of China under Grants 61378024 and Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science under grants SKLST201403.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20173104014253
Title:Design and Implementation of the Intelligent Streak Camera Control System Based on Internet of Things
Authors:Lü, Bin (1, 2); Pei, Cheng-Quan (3); Tian, Jin-Shou (1); Wen, Wen-Long (1); Wang, Jun-Feng (1)
Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an; 710049, China
Corresponding author:Tian, Jin-Shou(tianjs@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:5
Issue date:May 1, 2017
Publication year:2017
Article number:0522002
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:A distributed intelligent control system was implemented to make streak cameras more protable and intelligent, which achieved the monitoring of working parameters, precise control of the electrode voltage and scanning patterns, additionally, image acquisition and processing. Based on the structure of Internet of things and client-server model, the system realized multimachine collaboration capabilities about wired and wireless devices extension and mobile monitoring. Furthermore, an adjustable self-protection high voltage ringing choke converter was designed for the system. The power supply realized the miniaturization by the simply self-excited topological structure, and its linear adjustment accuracy can reach 1%.The picosecond visible light streak camera with the intelligent control system was calibrated by the Nd:YLF pulse laser (Wavelength of 526.5 nmand pulse width of 8 ps).A dynamic spatial resolution of 20 lp/mm (CTF=14%), a dynamic range of 234:1 and a temporal resolution of 14 ps were reached. 2017, Science Press. All right reserved.
Number of references:12
Main heading:Distributed parameter control systems
Controlled terms:Intelligent control - Internet of things - Overcurrent protection - Streak cameras - YLF lasers
Uncontrolled terms:Adjustment accuracies - Camera control systems - Client-server models - Collaboration capabilities - Design and implementations - Distributed intelligent control - Ringing choke converters - Topological structure
Classification code:723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 742.2 Photographic Equipment - 744.4.1 Semiconductor Lasers
Numerical data indexing:Percentage 1.00e+00%, Time 1.40e-11s, Time 8.00e-12s
DOI:10.3788/gzxb20174605.0522002
Funding details: Number: 11274377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (No.11274377).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<10>

Accession number:20175104547948
Title:Medium and High Voltage IGBT Module Using Nanosilver Paste Sintering Technology and Its Performance Characterization
Authors:Mei, Yunhui (1, 2); Feng, Jingjing (1); Wang, Xiaomin (1); Lu, Guoquan (1); Zhang, Peng (3); Lin, Zhongkang (3)
Author affiliation:(1) School of Materials Science and Engineering, Tianjin University, Tianjin; 300350, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) Global Energy Internet Research Institute, Beijing; 102200, China
Corresponding author:Mei, Yunhui(yunhui@tju.edu.cn)
Source title:Gaodianya Jishu/High Voltage Engineering
Abbreviated source title:Gaodianya Jishu
Volume:43
Issue:10
Issue date:October 31, 2017
Publication year:2017
Pages:3307-3312
Language:Chinese
ISSN:10036520
CODEN:GAJIE5
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Interface contact through pressure is the way for press-pack insulated gate bipolar transistor (IGBT) modules in smart grid to conduct heat dissipation. However, the junction temperature of the press-pack IGBT modules could be too high, leading to degradation of electrical properties and even impairing the reliability, because of poor interfacial contact and poor heat dissipation. To overcome the above problems, we developed a sinter-pack IGBT module using nanosilver paste by forming electrical contact with chip to replace pressure contact in press-pack module. Then, the sinter-pack module was characterized by die-shear strength, thermal resistance, and static characteristics to compare with press-pack IGBT module. According to the experimental results, the thermal resistance of sinter-pack IGBT module decreased by 15.8%. The static electricity test results are consistent with two types of modules, further proving the feasibility of sinter-pack IGBT modules. The shear strength is around 20 MPa, indicating a good bonding quality of large area of die (13.5 mm×13.5 mm) with nanosiver paste. It is concluded that nano silver paste employed in press-pack IGBT modules can not only significantly decrease the thermal resistance of press-pack IGBT modules, but also get an excellent static electricity. Thus, a sinter-pack module is expected to be operated in smart grid because of the higher conversion efficiency, power density, and reliability during operating at high voltage and current applications. 2017, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
Number of references:25
Main heading:Insulated gate bipolar transistors (IGBT)
Controlled terms:Electric power transmission networks - Heat resistance - Presses (machine tools) - Sintering - Smart power grids - Static electricity - Thermal management (electronics)
Uncontrolled terms:Igbt-modules - Interfacial contact - Junction temperatures - Nano-silver pastes - Performance characterization - Press-pack insulated gate bipolar transistors (IGBT) - Shear tests - Static characteristic
Classification code:603.1 Machine Tools, General - 701.1 Electricity: Basic Concepts and Phenomena - 706.1 Electric Power Systems - 706.1.1 Electric Power Transmission - 714.2 Semiconductor Devices and Integrated Circuits
Numerical data indexing:Percentage 1.58e+01%, Pressure 2.00e+07Pa
DOI:10.13336/j.1003-6520.hve.20170925021
Funding details: Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:基金资助项目:国家高技术研究发展计划(863 计划) (2015AA034501);国家自然科学基金(61334010);天津市科技支撑计划(13ZCZDGX01106);瞬态 光学与光子技术国家重点实验室开放课题(SKLST201607)。 Project supported by National High-tech Research and Development Program of China (863 Program) (2015AA034501), National Natural Science Foundation of China(61334010), Key Technologies Research and Development Program of Tianjin Municipal(13ZCZDGX01106), Opening Project of Chinese State Key Laboratory of Transient Optics and Photonics (SKLST201607).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<11>

Accession number:20172603860667
Title:Roles of palladium particles in enhancing the electrochemical migration resistance of sintered nano-silver paste as a bonding material
Authors:Wang, Di (1); Mei, Yun-Hui (1, 2); Xie, Haining (3); Zhang, Kun (3); Siow, Kim S. (4); Li, Xin (1); Lu, Guo-Quan (5)
Author affiliation:(1) Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin; 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) State Key Lab of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing; 102209, China; (4) Institute of Micro-Engineering and Nanoelectronics, Universiti Kebangsaan Malaysia, UKM, Bangi; Selangor D.E.; 43600, Malaysia; (5) Department of Materials Science and Engineering, Virginia Tech, Blacksburg; 24061, United States
Corresponding author:Mei, Yun-Hui(yunhui@tju.edu.cn)
Source title:Materials Letters
Abbreviated source title:Mater Lett
Volume:206
Issue date:November 1, 2017
Publication year:2017
Pages:1-4
Language:English
ISSN:0167577X
E-ISSN:18734979
CODEN:MLETDJ
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:The inhibition effect and mechanism of adding palladium particles to nano-silver paste on the migration of silver in high temperature is reported. The electrochemical migration (ECM) tests showed that silver migration was significantly delayed by the addition of palladium. The roles of different compositions, e.g., PdO, in enhancing the ECM resistance of silver were studied experimentally. We found Ag-Pd alloy < PdO < PdO (the oxidation process of palladium). The oxidation of palladium to palladium (II) oxides (PdO) suppressed the silver oxides to delay the onset of silver dendrites formation resulting in longer failure lifetime than the pure PdO, Ag-Pd alloy or a simple combination of the two. 2017 Elsevier B.V.
Number of references:12
Main heading:Palladium compounds
Controlled terms:Binary alloys - Electronics packaging - Nanoparticles - Palladium alloys - Silver alloys - Silver oxides - Sintering
Uncontrolled terms:Bonding materials - Electrochemical migration - Electronic Packaging - Inhibition effect - Nano-silver pastes - Oxidation process - Palladium particles - Silver migration
Classification code:547.1 Precious Metals - 761 Nanotechnology - 804 Chemical Products Generally - 933 Solid State Physics
DOI:10.1016/j.matlet.2017.06.066
Funding details: Number: 2015AA034501, Acronym: -, Sponsor: -;Number: 17JCYBJC19200, Acronym: -, Sponsor: -;Number: 61334010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by National High Technology Research and Development Program of China (under grant 2015AA034501); the Natural Science Foundation of China (under grant 61334010); and the Science and Technology Program of Tianjin, China (under grant 17JCYBJC19200).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<12>

Accession number:20170803363283
Title:Femtowatt incoherent image conversion from mid-infrared light to near-infrared light
Authors:Huang, Nan (1); Liu, Hongjun (1, 2); Wang, Zhaolu (1); Han, Jing (1); Zhang, Shuan (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics Technology, Xi'An Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi; 030006, China
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:27
Issue:3
Issue date:March 2017
Publication year:2017
Article number:035401
Language:English
ISSN:1054660X
E-ISSN:15556611
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:We report on the experimental conversion imaging of an incoherent continuous-wave dim source from mid-infrared light to near-infrared light with a lowest input power of 31 femtowatt (fW). Incoherent mid-infrared images of light emission from a heat lamp bulb with an adjustable power supply at window wavelengths ranging from 2.9 μm to 3.5 μm are used for upconversion. The sum-frequency generation is realized in a laser cavity with the resonant wavelength of 1064 nm pumped by an LD at 806 nm built around a periodically poled lithium niobate (PPLN) crystal. The converted infrared image in the wavelength range ~785 nm with a resolution of about 120 × 70 is low-noise detected using a silicon-based camera. By optimizing the system parameters, the upconversion quantum efficiency is predicted to be 28% for correctly polarized, on-axis and phase-matching light. 2017 Astro Ltd.
Number of references:20
Main heading:Infrared devices
Controlled terms:Infrared imaging - Niobium compounds - Phase matching - Pumping (laser)
Uncontrolled terms:Experimental conversion - incoherent - Midinfrared - Near infrared light - Periodically poled lithium niobate crystals - Resonant wavelengths - Sum frequency generation - Up-conversion
Classification code:713 Electronic Circuits - 744.1 Lasers, General - 746 Imaging Techniques
Numerical data indexing:Percentage 2.80e+01%, Size 1.06e-06m, Size 2.90e-06m to 3.50e-06m, Size 8.06e-07m
DOI:10.1088/1555-6611/aa57db
Funding details: Number: 11604377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant No 61275134 and 11604377.

Database:Compendex
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<13>

Accession number:20163002643546
Title:Graph Regularized Non-Negative Low-Rank Matrix Factorization for Image Clustering
Authors:Li, Xuelong (1); Cui, Guosheng (1, 2); Dong, Yongsheng (1, 3)
Author affiliation:(1) Center for Optical Imagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Chinese Academy of Sciences, Beijing; 100049, China; (3) Information Engineering College, Henan University of Science and Technology, Luoyang; 471023, China
Corresponding author:Dong, Yongsheng(dongyongsheng98@163.com)
Source title:IEEE Transactions on Cybernetics
Abbreviated source title:IEEE Trans. Cybern.
Volume:47
Issue:11
Issue date:November 2017
Publication year:2017
Pages:3840-3853
Article number:7517387
Language:English
ISSN:21682267
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Non-negative matrix factorization (NMF) has been one of the most popular methods for feature learning in the field of machine learning and computer vision. Most existing works directly apply NMF on high-dimensional image datasets for computing the effective representation of the raw images. However, in fact, the common essential information of a given class of images is hidden in their low rank parts. For obtaining an effective low-rank data representation, we in this paper propose a non-negative low-rank matrix factorization (NLMF) method for image clustering. For the purpose of improving its robustness for the data in a manifold structure, we further propose a graph regularized NLMF by incorporating the manifold structure information into our proposed objective function. Finally, we develop an efficient alternating iterative algorithm to learn the low-dimensional representation of low-rank parts of images for clustering. Alternatively, we also incorporate robust principal component analysis into our proposed scheme. Experimental results on four image datasets reveal that our proposed methods outperform four representative methods. 2013 IEEE.
Number of references:70
Main heading:Matrix algebra
Controlled terms:Factorization - Iterative methods - Learning systems - Principal component analysis
Uncontrolled terms:Data representations - graph regularization - Image clustering - Low-rank recoveries - Nonnegative matrix factorization
Classification code:921 Mathematics - 922.2 Mathematical Statistics
DOI:10.1109/TCYB.2016.2585355
Funding details: Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61125106, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61301230, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61125106 and Grant 61301230, in part by the International Science and Technology Cooperation Project of Henan Province under Grant 162102410021, in part by the China Post-Doctoral Science Foundation under Grant 2014M550517.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<14>

Accession number:20180404671107
Title:Design of flame detection video camera system based on DSP
Authors:Liu, Wen-Long (1); Li, Yun (1); Liu, Yong-Zheng (1); Kong, Liang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an; 710119, China
Corresponding author:Liu, Wen-Long(laoshugenlwl@126.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104621D
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:In order to alarm the fire and analyze the material burned, the high efficiency imaging system is designed to monitor the fire. The system selects the high performance CMOS image sensor, utilizing real-Time DSP with higher computing power, it is designed based on DSP C6748 by IIC serial port flame detectors video camera's registers, and the generated image data sent to DSP by VPIF interface, the image algorithm is transplanted to DSP, at last, the system will alarm the fire and output spectral characteristics of the burning material via Ethernet interface. This system completes algorithm hardware realization, and the algorithm can detect image in real-Time and extract the effect of spectral characteristics of burning material, so that the algorithm processing can speed up from minute level on the PC to the sub-second level. 2017 SPIE.
Number of references:4
Main heading:Video cameras
Controlled terms:CMOS integrated circuits - Digital signal processing - Interfaces (materials)
Uncontrolled terms:Burning materials - Computing power - Ethernet interface - Flash - Hardware realization - High-performance CMOS - Image algorithms - Spectral characteristics
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 716.4 Television Systems and Equipment - 951 Materials Science
DOI:10.1117/12.2283467

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<15>

Accession number:20181705046999
Title:Research on implementation of an improved finite state machine model in satellite simulated system
Authors:Feng, Xu-Bin (1, 2); Su, Xiu-Qin (1, 2); Wang, Chen (1); Han, Jun-Feng (1); Yang, Yong-Qing (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10605
Part number:1 of 1
Issue title:LIDAR Imaging Detection and Target Recognition 2017
Issue date:2017
Publication year:2017
Article number:106050Y
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510617063
Document type:Conference article (CA)
Conference name:LIDAR Imaging Detection and Target Recognition 2017
Conference date:July 23, 2017 - July 25, 2017
Conference location:Changchun, China
Conference code:133763
Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering (CSOE); National Natural Science Foundation of China
Publisher:SPIE
Abstract:Satellite simulated system is a very important sub system of satellite payload ground comprehensive testing system which tests the satellite payload's order and telemetering before delivering the payload to satellite. For all kinds of satellite simulated system, a new implementation which used an improved Finite State Machine (FSM) model can make the whole system modules clear, reduce the coupling between modules, improve the modules' reusability, enhance productivity, and make the research and development of the whole system easier. The engineering applications' experimental results show that the implementation of an improved FSM model can make the satellite simulated system stable and reliable. 2017 SPIE.
Number of references:8
Main heading:Satellites
Controlled terms:Couplings - Finite automata - Optical radar - Reusability
Uncontrolled terms:Comprehensive testing - Engineering applications - Finite state machine model - Payload - Research and development - Satellite payloads - Simulated system - System modules
Classification code:655.2 Satellites - 716.2 Radar Systems and Equipment - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
DOI:10.1117/12.2286412

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<16>

Accession number:20175004516606
Title:Generation of Circular Optical Vortex Array
Authors:Ma, Haixiang (1); Li, Xinzhong (1, 2); Tai, Yuping (3); Li, Hehe (1); Wang, Jingge (1); Tang, Miaomiao (1); Tang, Jie (2); Wang, Yishan (2); Nie, Zhaogang (4)
Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang; 471023, China; (4) School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou; 510006, China
Corresponding author:Li, Xinzhong(xzli@haust.edu.cn)
Source title:Annalen der Physik
Abbreviated source title:Ann Phys Leipzig
Volume:529
Issue:12
Issue date:December 2017
Publication year:2017
Article number:1700285
Language:English
ISSN:00033804
E-ISSN:15213889
CODEN:ANPYA2
Document type:Journal article (JA)
Publisher:Wiley-VCH Verlag
Abstract:We report on a novel optical vortex array named circular optical vortex array, which is generated by the superposition of two concentric perfect optical vortices. The circular optical vortex array has a constant topological charge of +1 or ?1, the number and sign of which are determined by the topological charges of the two perfect optical vortices. Moreover, the radius of the circular optical vortex array is easily adjusted by using the cone angle of an axicon. Furthermore, the circular optical vortex array and multiple circular optical vortex array can be rotated by changing the initial phase difference of the perfect optical vortices on demand. This work demonstrates a complex structured optical field, which is of significance for applications such as optical tweezers, micro-particle manipulation, and optical imaging. 2017 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Number of references:42
Main heading:Vortex flow
Controlled terms:Optical tweezers - Topology
Uncontrolled terms:Cone angle - Micro particles - Optical field - Optical imaging - Optical manipulation - Optical vortices - Phase difference - Topological charges
Classification code:631.1 Fluid Flow, General - 744.9 Laser Applications - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1002/andp.201700285
Funding details: Number: 61775052, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61205086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11704098, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China(NSFC) (nos. 61775052, 61205086, 11704098).

Database:Compendex
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<17>

Accession number:20180704799521
Title:A sparse dictionary learning method for hyperspectral anomaly detection with capped norm
Authors:Ma, Dandan (1); Yuan, Yuan (1); Wang, Qi (2)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, China; (2) School of Computer Science, Center for OPTical IMagery Analysis and Learning, Northwestern Polytechnical University, China
Corresponding author:Wang, Qi(author:crabwq@nwpu.edu.cn)
Source title:International Geoscience and Remote Sensing Symposium (IGARSS)
Abbreviated source title:Dig Int Geosci Remote Sens Symp (IGARSS)
Volume:2017-July
Part number:1 of 1
Issue title:2017 IEEE International Geoscience and Remote Sensing Symposium: International Cooperation for Global Awareness, IGARSS 2017 - Proceedings
Issue date:December 1, 2017
Publication year:2017
Pages:648-651
Article number:8127037
Language:English
CODEN:IGRSE3
ISBN-13:9781509049516
Document type:Conference article (CA)
Conference name:37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
Conference date:July 23, 2017 - July 28, 2017
Conference location:Fort Worth, TX, United states
Conference code:133497
Sponsor:IEEE Geoscience and Remote Sensing Society (GRSS)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Hyperspectral anomaly detection is playing an important role in remote sensing field. Most conventional detectors based on the Reed-Xiaoli (RX) method assume the background signature obeys a Gaussian distribution. However, it is definitely hard to be satisfied in practice. Moreover, background statistics is susceptible to contamination of anomalies in the processing windows, which may lead to many false alarms and sensitiveness to the size of windows. To solve these problems, a novel sparse dictionary learning hyperspectral anomaly detection method with capped norm constraint is proposed. Contributions are claimed in threefold: 1) requiring no assumptions on the background distribution makes the method more adaptive to different scenes; 2) benefiting from the capped norm our method has a stronger distinctiveness to anomalies; and 3) it also has better adaptability to detect different sizes of anomalies without using the sliding dual window. The extensive experimental results demonstrate the desirable performance of our method. 2017 IEEE.
Number of references:12
DOI:10.1109/IGARSS.2017.8127037
Funding details: Number: 2013CB336500, Acronym: -, Sponsor: -;Number: 60632018, Acronym: -, Sponsor: -;Number: 61232010, Acronym: -, Sponsor: -;Number: 61379094, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Basic Research Program of China (Youth 973 Program) under Grant 2013CB336500, in part by the State Key Program of National Natural Science of China under Grant 60632018 and Grant 61232010, and in part by the National Natural Science Foundation of China under Grant 61379094.

Database:Compendex
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<18>

Accession number:20174304306091
Title:Midinfrared wavelength conversion in hydrogenated amorphous silicon waveguides
Authors:Wang, Jiang (1, 2); Wang, Zhaolu (1); Huang, Nan (1); Han, Jing (1); Li, Yongfang (2); Liu, Hongjun (1)
Author affiliation:(1) Chinese Academy of Science, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (2) Shaanxi Normal University, School of Physics and Information Technology, Xi'an, China
Corresponding author:Liu, Hongjun(liuhongjun@opt.ac.cn)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:10
Issue date:October 1, 2017
Publication year:2017
Article number:107103
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:Midinfrared (MIR) wavelength conversion based on degenerate four-wave mixing is theoretically investigated in hydrogenated amorphous silicon (a-Si:H) waveguides. The broadband phase mismatch is achieved in the normal group-velocity dispersion regime. The conversion bandwidth is extended to 900 nm, and conversion efficiency of up to -14 dB with a pump power of 70 mW in a 2-mm long a-Si:H rib waveguides is obtained. This low-power on-chip wavelength converter will have potential for application in a wide range of MIR nonlinear optic devices. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:33
Main heading:Amorphous silicon
Controlled terms:Four wave mixing - Group velocity dispersion - Hydrogenation - Nonlinear optics - Waveguides
Uncontrolled terms:Degenerate four wave mixing - Hydrogenated amorphous silicon (a-Si:H) - Mid-infrared wavelengths - Midinfrared - Phase mismatch - Pump power - Rib waveguides - Wavelength converter
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.3 Waveguides - 741.1.1 Nonlinear Optics - 802.2 Chemical Reactions
Numerical data indexing:Decibel -1.40e+01dB, Power 7.00e-02W, Size 2.00e-03m, Size 9.00e-07m
DOI:10.1117/1.OE.56.10.107103
Funding details: Number: XAB2015B27, Acronym: -, Sponsor: -;Number: 2016JQ6036, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61505247, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11604377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: QNLM2016ORP0111, Acronym: QUST, Sponsor: Qingdao University of Science and Technology;
Funding text:This work was jointly supported by the National Natural Science Foundation of China under Grant Nos. (61505247, 11604377, and 61275134), the Qingdao National Laboratory for Marine Science and Technology (No. QNLM2016ORP0111), the CAS "Light of West China" Program (No. XAB2015B27), and the Natural Science Basic Research plan in Shaanxi Province of China (No. 2016JQ6036).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<19>

Accession number:20173804169245
Title:Research on video scene mapping of fixed viewing angle
Authors:Wang, Yihao (1); Liu, Jiahang (1); Shi, Liu (1)
Author affiliation:(1) Remote Sensing Centre, Xi'An Institute of Optics and Precision Mechanics of CAS, China
Source title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017
Abbreviated source title:Int. Conf. Image, Vis. Comput., ICIVC
Part number:1 of 1
Issue title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017
Issue date:July 18, 2017
Publication year:2017
Pages:463-467
Article number:7984599
Language:English
ISBN-13:9781509062379
Document type:Conference article (CA)
Conference name:2nd International Conference on Image, Vision and Computing, ICIVC 2017
Conference date:June 2, 2017 - June 4, 2017
Conference location:Chengdu, China
Conference code:129351
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Mapping special images in video scene has practical important applications in the fields of advertising and television production, while there have been few reports on how to map in the background of video scene without impacting foreground targets which makes the result more realistic. We propose a method to embed images on certain location in video scene of fixed viewing angle. We first build background model from video frames, extract foreground using background subtraction method, then calibrate the camera using intrinsic information from video. On this basis we establish mapping matrices of image coordinate to world coordinate and image coordinate to video image coordinate according to location and orientation parameters. By using mapping matrices we embed the images on the background of video scene in right posture, and reproduce the foreground objects. Experiments in different scenes show that the proposed method is easily to use which makes mapping realistic and without impacting foreground objects, and has a good practicability. 2017 IEEE.
Number of references:19
Main heading:Mapping
Controlled terms:Cameras - Matrix algebra - Television applications
Uncontrolled terms:Background subtraction method - Camera self calibration - Foreground extraction - Foreground objects - Image coordinates - Orientation parameter - Video scene - World coordinates
Classification code:405.3 Surveying - 716.4 Television Systems and Equipment - 742.2 Photographic Equipment - 921.1 Algebra
DOI:10.1109/ICIVC.2017.7984599

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<20>

Accession number:20180304654536
Title:Lunar-edge based on-orbit modulation transfer function (MTF) measurement
Authors:Cheng, Ying (1, 2); Yi, Hongwei (1); Liu, Xinlong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17, Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, Jingjia Road, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10463
Part number:1 of 1
Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation
Issue date:2017
Publication year:2017
Article number:104631U
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614079
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133232
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Modulation transfer function (MTF) is an important parameter for image quality evaluation of on-orbit optical image systems. Various methods have been proposed to determine the MTF of an imaging system which are based on images containing point, pulse and edge features. In this paper, the edge of the moon can be used as a high contrast target to measure on-orbit MTF of image systems based on knife-edge methods. The proposed method is an extension of the ISO 12233 Slanted-edge Spatial Frequency Response test, except that the shape of the edge is a circular arc instead of a straight line. In order to get more accurate edge locations and then obtain a more authentic edge spread function (ESF), we choose circular fitting method based on least square to fit lunar edge in sub-pixel edge detection process. At last, simulation results show that the MTF value at Nyquist frequency calculated using our lunar edge method is reliable and accurate with error less than 2% comparing with theoretical MTF value. 2017 SPIE.
Number of references:25
Main heading:Orbits
Controlled terms:Earth (planet) - Edge detection - Frequency response - Geometrical optics - Least squares approximations - Modulation - Moon - Optical transfer function - Pixels - Transfer functions
Uncontrolled terms:Edge spread function - Image quality evaluation - lunar-edge - Modulation transfer function (MTF) - Modulation transfer function measurements - On orbit - Spatial frequency response - Subpixel edge detection
Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods
Numerical data indexing:Percentage 2.00e+00%
DOI:10.1117/12.2285836

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<21>

Accession number:20180404671055
Title:Hyperspectral anomaly detection based on machine learning and building selection graph
Authors:Tang, Yehui (1); Qin, Hanlin (1); Liang, Ying (1); Leng, Hanbing (2); Ju, Zezhao (1)
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China
Corresponding author:Qin, Hanlin
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104625B
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:In hyperspectral images, anomaly detection without prior information develops rapidly. Most of the existing methods are based on restrictive assumptions of the background distribution. However, the complexity of the environment makes it hard to meet the assumptions, and it is difficult for a pre-set data model to adapt to a variety of environments. To solve the problem, this paper proposes an anomaly detection method on the foundation of machine learning and graph theory. First, the attributes of vertexes in the graph are set by the reconstruct errors. And then, robust background endmember dictionary and abundance matrix are received by structured sparse representation algorithm. Second, the Euler distances between pixels in lower-dimension are regarded as edge weights in the graph, after the analysis of the low dimensional manifold structure among the hyperspectral data, which is in virtue of manifold learning method. Finally, anomaly pixels are picked up by both vertex attributes and edge weights. The proposed method has higher probability of detection and lower probability of false alarm, which is verified by experiments on real images. 2017 SPIE.
Number of references:14
Main heading:Graph theory
Controlled terms:Artificial intelligence - Hyperspectral imaging - Independent component analysis - Learning systems - Pixels - Spectroscopy
Uncontrolled terms:Anomaly detection - Anomaly detection methods - Hyperspectral anomaly detection - Low-dimensional manifolds - Lower probabilities - Manifold learning - Probability of detection - Structured sparse representations
Classification code:723.4 Artificial Intelligence - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1117/12.2285780
Funding details: Number: 2017JM6079, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Provincial Department of Education;Number: 614102033306, Acronym: -, Sponsor: Ministry of Education;Number: LSIT201503, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61401343, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is co-supported by the National Natural Science Foundation of China (61401343), the Joint Funds for the Ministry of Education (614102033306), the National Natural Science Foundation of Shaanxi Provincial (2017JM6079), the Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences (LSIT201503).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<22>

Accession number:20180304653285
Title:Distinguishing the number of captured microspheres in dual-beam optical trap by measuring the back light signal
Authors:Zhou, Deyuan (1); Chen, Xinlin (1); Xiao, Guangzong (1, 2); Han, Xiang (1); Jin, Shilong (1)
Author affiliation:(1) College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) State Key Laboratory of Transient Optics and Photonic, Chinese Academy of Sciences, Xian; 710068, China
Corresponding author:Xiao, Guangzong(xiaoguangzong@nudt.edu.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10460
Part number:1 of 1
Issue title:AOPC 2017: Optoelectronics and Micro/Nano-Optics
Issue date:2017
Publication year:2017
Article number:104601B
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614017
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optoelectronics and Micro/Nano-Optics, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133231
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Optical traps have been widely used in a large variety of applications ranging from biophysics to nano-sciences. More than one microscopic object can be captured in an optical trap. In the practical application, it is always necessary to distinguish and control the number of captured objects in the optical trap. In this paper, a novel method has been presented to distinguish the number of trapped microspheres by measuring the intensity of back signal. Clear descent of the back signal has been observed when a microsphere is captured in the center of optical trap. The relative coupling efficiency of back signal decreases as the number of captured microspheres increases both in experiment and theory. This method contributes to miniaturization and integration of applied systems due to getting rid of the imaging system, and is generally applicable to the area of nanoparticle trapping. 2017 SPIE.
Number of references:13
Main heading:Optical fiber coupling
Controlled terms:Efficiency - Fiber optics - Microspheres
Uncontrolled terms:Coupling efficiency - Dual beam - Light signal - Microscopic objects - Microspheres increase - Nano-particle trapping - Optical manipulation - Optical trap
Classification code:741.1.2 Fiber Optics - 913.1 Production Engineering
DOI:10.1117/12.2284995
Funding details: Number: SKLST201507, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2017JJ3363, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the Hunan Provincial Natural Science Foundation of China (2017JJ3363) and by the Open Research Fund (SKLST201507) of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<23>

Accession number:20180104607021
Title:Temporal imaging based on four-wave mixing in slow-light photonic crystal waveguide
Authors:Zhou, Mingyang (1); Liu, Hongjun (1, 2); Wang, Zhaolu (1); Huang, Nan (1); Han, Jing (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi; 030006, China
Source title:Journal of Optics (United Kingdom)
Abbreviated source title:J. Opt.
Volume:19
Issue:12
Issue date:December 2017
Publication year:2017
Article number:125502
Language:English
ISSN:20408978
E-ISSN:20408986
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:We have proposed a temporal imaging system based on four-wave mixing (FWM) in the dispersion engineered slow-light photonic crystal waveguide (PCW). Dispersion relations of the modified PCW are calculated through the 3D plane wave expansion method. Time lens is demonstrated by solving the couple-mode equations describing the FWM process inside the PCW directly. Intensity and phase evolutions of the signal, pump and idler waves during the FWM process are calculated to investigate temporal imaging. Meanwhile, temporal magnifications with different magnification factors are realized by tuning the total dispersion of the input signals. Furthermore, influences of dispersion and free-carrier effects inside PCW on the temporal imaging performance are analyzed. The simulation results show the capability to realize temporal imaging system based on the FWM process in slow-light engineered PCW. 2017 IOP Publishing Ltd.
Number of references:23
Main heading:Slow light
Controlled terms:Dispersion (waves) - Four wave mixing - Image processing - Imaging systems - Optical systems - Optical waveguides - Photonic crystals - Waveguide components
Uncontrolled terms:Couple mode equation - Dispersion relations - Four Wave Mixing (FWM) - Free-carrier effects - Magnification factors - Photonic crystal waveguide - Temporal imaging - Temporal imaging systems
Classification code:714.3 Waveguides - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques
DOI:10.1088/2040-8986/aa9138
Funding details: Number: 2016JQ6036, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: No.XAB2015B27, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: No.QNLM2016ORP0111, Acronym: QNLM, Sponsor: Qingdao National Laboratory for Marine Science and Technology;Number: 61505247, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11604377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was partially funded by the National Natural Science Foundation of China grant (Nos. 61505247, 11604377, and 61275134), Qingdao National Laboratory for Marine Science and Technology (No.QNLM2016ORP0111), CAS ‘Light of west China’ Program (No.XAB2015B27), and Natural Science Basic Research plan in Shaanxi Province of China (No.2016JQ6036).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<24>

Accession number:20174804481824
Title:Hierarchical recurrent neural network for video summarization
Authors:Zhao, Bin (1); Li, Xuelong (2); Lu, Xiaoqiang (2)
Author affiliation:(1) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710019, China
Source title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference
Abbreviated source title:MM - Proc. ACM Multimed. Conf.
Part number:1 of 1
Issue title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference
Issue date:October 23, 2017
Publication year:2017
Pages:863-871
Language:English
ISBN-13:9781450349062
Document type:Conference article (CA)
Conference name:25th ACM International Conference on Multimedia, MM 2017
Conference date:October 23, 2017 - October 27, 2017
Conference location:Mountain View, CA, United states
Conference code:131373
Sponsor:ACM SIGMM
Publisher:Association for Computing Machinery, Inc
Abstract:Exploiting the temporal dependency among video frames or subshots is very important for the task of video summarization. Practically, RNN is good at temporal dependency modeling, and has achieved overwhelming performance in many video-based tasks, such as video captioning and classification. However, RNN is not capable enough to handle the video summarization task, since traditional RNNs, including LSTM, can only deal with short videos, while the videos in the summarization task are usually in longer duration. To address this problem, we propose a hierarchical recurrent neural network for video summarization, called H-RNN in this paper. Specifically, it has two layers, where the first layer is utilized to encode short video subshots cut from the original video, and the final hidden state of each subshot is input to the second layer for calculating its confidence to be a key subshot. Compared to traditional RNNs, H-RNN is more suitable to video summarization, since it can exploit long temporal dependency among frames, meanwhile, the computation operations are significantly lessened. The results on two popular datasets, including the Combined dataset and VTW dataset, have demonstrated that the proposed H-RNN outperforms the state-of-the-arts. 2017 ACM.
Number of references:38
Main heading:Long short-term memory
Controlled terms:Deep learning - Video recording
Uncontrolled terms:Dependency model - Hidden state - Original videos - Second layer - State of the art - Sub-shot - Video frame - Video summarization
Classification code:716.4 Television Systems and Equipment
DOI:10.1145/3123266.3123328

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<25>

Accession number:20171503569200
Title:Window function optimization in atmospheric wind velocity retrieval with doppler difference interference spectrometer
Authors:Chen, Jiejing (1, 2); Feng, Yutao (1); Hu, Bingliang (1); Li, Juan (1); Sun, Jian (1); Hao, Xiongbo (1); Bai, Qinglan (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of the Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Feng, Yutao(fytciom@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:37
Issue:2
Issue date:February 10, 2017
Publication year:2017
Article number:0207002
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Doppler difference interference spectrometer is a kind of Fourier transform spectrometer. In the process of atmospheric wind velocity retrieval, even-prolongated recovered spectrum cannot work out the phase information of the target spectral line directly. Meanwhile, there are stray spectral lines and noises in the recovered spectrum, which make the phase of the interferogram changed and the retrieved wind velocity deviated. Therefore, isolation of the target spectral line is necessary in the process of getting the phase information of the recovered spectrum in actual noisy environment. For interferograms with different signal noise ratios the retrieved wind velocities (SNR) optimized by different window functions with different line widths are analyzed by Monte-Carlo method. The results indicate that the Gaussian window function with line width equaling 4 to 5 times of the spectral resolution provides the best performance if the SNR of the measured interferogram is higher than 26.5 dB, and rectangular window function with line width equaling 7 to 12 times-of the spectral resolution provides the best performance if the SNR of the measured interferogram is lower than 26.5 dB. The phase information and the approximative atmospheric wind velocity can be retrieved. 2017, Chinese Lasers Press. All right reserved.
Number of references:13
Page count:7
Main heading:Monte Carlo methods
Controlled terms:Data handling - Fourier transform infrared spectroscopy - Interferometry - Recovery - Signal processing - Signal to noise ratio - Spectral resolution - Spectrometers - Velocity - Wind
Uncontrolled terms:Atmospheric Winds - Fourier transform spectrometers - Interference spectrometer - Noisy environment - Phase information - Rectangular windows - Signal-noise ratio - Spectral data
Classification code:443.1 Atmospheric Properties - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 922.2 Mathematical Statistics - 941.4 Optical Variables Measurements
Numerical data indexing:Decibel 2.65e+01dB
DOI:10.3788/AOS201737.0207002

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<26>

Accession number:20172203715584
Title:Centric baffle design of partial field optical system
Authors:Wang, Chenchen (1, 2); Zou, Gangyi (1, 2); Li, Ruichang (1, 2); Fan, Xuewu (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Fan, Xuewu(anxuewu@opt.ac.cn)
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:3
Issue date:March 25, 2017
Publication year:2017
Article number:0318002
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:A partial field optical system baffle was designed and optimized. Partial field was non-symmetry along one direction, so a large number light tracing was needed to design the centric, which made it difficult to design. A method of footprint diagram was used to get the coordinate of special light in the space, the size of effective field and the part of baffle blocking light. The part blocking light was removed and a "duck mouth shaped" baffle was got, which can decrease the difficulty of design. By optimizing the design, length of final designed baffle was half of the former one, and reduced the size along Y direction, which can reduce more stray light to enter the later optical system directly. Baffle was modeled and simulated by Solidworks and TracePro software, the PST is about 10-9when the off-axis angle is 30°, which is less than 5.59×10-7, the requirement of the system. The result of the simulation shows that using method of footprint diagram to design inner baffle of a partial field optical system is feasible. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:14
Main heading:Optical systems
Controlled terms:Design - Stray light
Uncontrolled terms:Centric baffle - Effective field - Non symmetries - Off-axis angles - Partial field - SolidWorks - TracePro
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems
DOI:10.3788/IRLA201746.0318002

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<27>

Accession number:20173504103022
Title:Histogram-based human segmentation technique for infrared images
Authors:Wu, Di (1, 2); Zhou, Zuofeng (1); Yang, Hongtao (1); Cao, Jianzhong (1)
Author affiliation:(1) Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Wu, Di(wudi@opt.cn)
Source title:Advances in Intelligent Systems and Computing
Abbreviated source title:Adv. Intell. Sys. Comput.
Volume:555
Part number:1 of 1
Issue title:Recent Developments in Intelligent Computing, Communication and Devices - Proceedings of ICCD 2016
Issue date:2017
Publication year:2017
Pages:129-132
Language:English
ISSN:21945357
ISBN-13:9789811037788
Document type:Conference article (CA)
Conference name:2nd International Conference on Intelligent Computing, Communication and Devices, ICCD 2016
Conference date:August 13, 2016 - August 14, 2016
Conference location:Bhubaneswar, India
Conference code:196339
Publisher:Springer Verlag
Abstract:Human detection in infrared video surveillance system is a challenging issue of computer vision. Effective human segmentation plays an important role in human detection. However, occlusion between different people makes it difficult to segment human groups. In this paper, we propose a new method for infrared human segmentation based on the histogram information. After selecting regions of interest with background subtraction, each connected human region is separated into single ones by analyzing histogram trend and calculating peak number. Experiment results show the accuracy of our method. 2017, Springer Nature Singapore Pte Ltd.
Number of references:7
Main heading:Image segmentation
Controlled terms:Graphic methods - Infrared imaging - Intelligent computing - Security systems
Uncontrolled terms:Background subtraction - Histogram - Histogram information - Human detection - Human segmentation - Infrared video - Regions of interest
Classification code:723.4 Artificial Intelligence - 746 Imaging Techniques - 914.1 Accidents and Accident Prevention
DOI:10.1007/978-981-10-3779-5_16

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<28>

Accession number:20175104560103
Title:Test Method of Angle Error of Limited Rotation Axis System
Authors:Tian, Liu-De (1, 2); Zhao, Jian-Ke (1); Zhou, Yan (1); Wang, Tao (1); Zhao, Huai-Xue (1); Pan, Liang (1); Liu, Zhao-Hui (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Liu, Zhao-Hui(lzh@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:11
Issue date:November 1, 2017
Publication year:2017
Article number:1112005
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:In order to improve the measurement accuracy of the angular error in the limited rotation axis system, the principle and method of measuring the angular error by autocollimation theodolite was used to analysis the error sources which affect the measurement result, the simulation results show that the tilt angle of the axis of the measured shaft is the main error source. Based on the accurate error model, the method to identify the misadjustment parameters and separate the introduced error by using the least squares estimation was proposed to realize the high precision measurement of angle error. The experiment was carried out with the accuracy of 2″ single-axis position turntable as tested object. The test results of conventional methods are -309.1″~428.6″, the test error is large, however, the test results of the proposed method are -0.89″~1.01″ and -1.01″~0.93″, the test error is 0.70″ and 0.78″, eliminating the test error introduced by equipment misadjustment. The method has the advantages of simple equipment and simple operation, and can realize the high precision measurement the angle error of the limited rotation axis system, can solve the problem of limited rotation axis systemengineering testing problem. 2017, Science Press. All right reserved.
Number of references:22
Main heading:Least squares approximations
Controlled terms:Angle measurement - Errors - Measurement - Rotation
Uncontrolled terms:Conventional methods - Coodinate transformation - Error model - High-precision measurement - Least squares estimation - Measurement accuracy - Rotation axis - Testing method
Classification code:921.6 Numerical Methods - 931.1 Mechanics - 943.2 Mechanical Variables Measurements
DOI:10.3788/gzxb20174611.1112005

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<29>

Accession number:20174904513944
Title:Regularized class-specific subspace classifier
Authors:Zhang, Rui (1); Nie, Feiping (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Nie, Feiping(feipingnie@gmail.com)
Source title:IEEE Transactions on Neural Networks and Learning Systems
Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.
Volume:28
Issue:11
Issue date:November 2017
Publication year:2017
Pages:2738-2747
Article number:7556299
Language:English
ISSN:2162237X
E-ISSN:21622388
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In this paper, we mainly focus on how to achieve the translated subspace representation for each class, which could simultaneously indicate the distribution of the associated class and the differences from its complementary classes. By virtue of the reconstruction problem, the class-specific subspace classifier (CSSC) problem could be represented as a series of biobjective optimization problems, which minimize and maximize the reconstruction errors of the related class and its complementary classes, respectively. Besides, the regularization term is specifically introduced to ensure the whole system's stability. Accordingly, a regularized class-specific subspace classifier (RCSSC) method can be further proposed based on solving a general quadratic ratio problem. The proposed RCSSC method consistently converges to the global optimal subspace and translation under the variations of the regularization parameter. Furthermore, the proposed RCSSC method could be extended to the unregularized case, which is known as unregularized CSSC (UCSSC) method via orthogonal decomposition technique. As a result, the effectiveness and the superiority of both proposed RCSSC and UCSSC methods can be verified analytically and experimentally. 2016 IEEE.
Number of references:32
Main heading:Concrete beams and girders
Controlled terms:Artificial intelligence - Computer networks - Translation (languages)
Uncontrolled terms:Bi-objective optimization - Class-specific subspace - Orthogonal decomposition techniques - Ratio problem - Reconstruction problems - Regularization parameters - Regularization terms - Subspace representation
Classification code:412 Concrete - 723.4 Artificial Intelligence - 903.1 Information Sources and Analysis
DOI:10.1109/TNNLS.2016.2598744
Funding details: Number: -, Acronym: NPU, Sponsor: Northwestern Polytechnical University;Number: 3102015BJ(II)JJZ01, Acronym: -, Sponsor: -;
Funding text:Manuscript received January 25, 2016; revised May 25, 2016 and August 3, 2016; accepted August 4, 2016. Date of publication August 30, 2016; date of current version October 16, 2017. This work was supported by the Fundamental Research Funds for the Central Universities under Grant 3102015BJ(II)JJZ01. (Corresponding author: Feiping Nie.) R. Zhang and F. Nie are with School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi’an 710072, Shaanxi, P. R. China (e-mail: ruizhang8633@gmail.com; feipingnie@gmail.com).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<30>

Accession number:20173003967991
Title:Nonlinear Interference Spectrum Data Reconstruction Algorithm for Image Plane Interference
Authors:Zhang, Zhinan (1); Li, Libo (1); Hu, Bingliang (1); Chen, Jiejing (1, 2); Gao, Xiaohui (1, 2); Yang, Fanchao (1)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Hu, Bingliang(249771538@qq.com)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:37
Issue:6
Issue date:June 10, 2017
Publication year:2017
Article number:0630002
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:The static Michelson interferometer is an entity type image plane interferometer, which can solve the technical difficulty of large field of view of interferometer. In the sampling process, nonlinear interference error is introduced by the interferometer, which leads to a consequence that the spectrum cannot be recovered accurately, so the nonlinear interference error needs to be corrected. A theoretical model of nonlinear interference error is analyzed, a nonlinear interference spectrum data reconstruction algorithm is presented, and a simulation is carried out. The simulation results indicate that the target spectrum can be recovered successfully by the reconstruction algorithm with numerical fitting, and the nonlinear interference error is eliminated. The reconstruction algorithm using Cauchy dispersion formula fitting is more precise than the reconstruction algorithm using linear fitting, and the relative error between the recovery spectrum and the input spectrum is less than 0.7% at the absorption peak. 2017, Chinese Lasers Press. All right reserved.
Number of references:14
Main heading:Absorption spectroscopy
Controlled terms:Errors - Image reconstruction - Michelson interferometers - Recovery - Spectroscopy
Uncontrolled terms:Cauchy dispersion formula - Image plane - Interference spectrum - Large field of views - Reconstruction algorithms - Spectrum recoveries - Technical difficulties - Theoretical modeling
Classification code:941.3 Optical Instruments
Numerical data indexing:Percentage 7.00e-01%
DOI:10.3788/AOS201737.0630002

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<31>

Accession number:20181004855823
Title:Research on Mural Painting Appreciatione Based on Spectral Imaging and Spectral Analysis
Authors:Xu, Wen-Zhong (1); Tang, Xing-Jia (2); Zhang, Geng (2); Yang, Fan-Chao (2); Huang, Xin (2); Li, Xia (2); Liu, Dai-Yun (3); Zhao, Xi-Chen (3)
Author affiliation:(1) Shaanxi History Museum, Xi'an; 710000, China; (2) Xi' an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (3) Shaanxi Archaeological Institute, Xi'an; 710000, China
Corresponding author:Tang, Xing-Jia(tang-xingjia@163.com)
Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi
Volume:37
Issue:10
Issue date:October 1, 2017
Publication year:2017
Pages:3235-3241
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press
Abstract:For the technology requirements of appreciating mural paintings, according to the advantages of spectral imaging and spectral analysis, the usages of spectral imaging in appreciating mural paintings were discussed, which could improve the traditional expert experience identification method by providing more information in the appreciation and assessment. Spectral method is an important scientific analysis method with many characteristics, like non-contact, lossless, scientific, accurate and quantifiable, which can be used to appreciate mural paintings. Firstly, the application was analyzed from different functions. Secondly, the measurements of mural paintings in HAN XIU tomb were processed by spectral analysis, primary component analysis, independent component analysis, relevance judgment and interactive processing, which were for proving the real affection of the theory analysis. At last, based on the experiments, some key technologies were summarized, for example, normalized measurements, analysis of characters of image and spectral data, processer of image and spectral data. The experiment results showed that the spectral imaging and analysis were useful for the recognition of pigment, the extraction of hidden information, the enhancement of weak information, and the classification and recognition of different properties. Meanwhile, some exploratory works can be unfolded, like modified child analysis, repairing of paintings (such as repairing mural paintings in HAN XIU tomb). 2017, Peking University Press. All right reserved.
Number of references:10
Main heading:Image processing
Controlled terms:Classification (of information) - Independent component analysis - Painting - Processing - Repair - Spectroscopy - Spectrum analysis
Uncontrolled terms:Classification and recognition - Hidden information - Identification method - Mural paintings - Primary component analysis - Relevance judgment - Scientific analysis - Spectral imaging
Classification code:716.1 Information Theory and Signal Processing - 813.1 Coating Techniques - 913.4 Manufacturing - 913.5 Maintenance
DOI:10.3964/j.issn.1000-0593(2017)10-3235-07

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<32>

Accession number:20181104898703
Title:A Spiral-Maneuver Control Method for a Fixed-Trim Warhead
Authors:Zhou, Min (1); Zhou, Jun (1); Lu, Ming-Fei (2)
Author affiliation:(1) Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi'an; 710072, China; (2) Xi'an Institute of Applied Optics, Xi'an; 710065, China
Source title:Yuhang Xuebao/Journal of Astronautics
Abbreviated source title:Yuhang Xuebao
Volume:38
Issue:11
Issue date:November 30, 2017
Publication year:2017
Pages:1195-1203
Language:Chinese
ISSN:10001328
CODEN:YUXUD6
Document type:Journal article (JA)
Publisher:China Spaceflight Society
Abstract:Given the problem that the common spiral-maneuver control method to realize both vertical and lateral overload needed is not applicable for a fixed-trim warhead with a controllable lift-force direction but an uncontrollable magnitude, a new spiral-maneuver control method is proposed for a moving-mass fixed-trim warhead in the control mode of single rolling channel. Firstly, the relative motion model is formulated with the spiraling angle and spiraling angular velocity. It is an intuitional description of the spiraling motion. Based on the relationship of the spiraling motion variables and angular rates of light-of-sight, the spiral-maneuver command is designed to ensure that the angular rates of light-of-sight converge to zero at the end. The back-stepping control method is then applied in the integrated guidance and control of the mass-point motion and the rolling attitude motion. The bank angle is controlled by a one-dimension moving mass to adjust the direction of the lift force. Thus, there's a component of the lift force controlling the angle between the relative velocity vector and the line of sight to trace the desired spiraling angle, while the rest component results in a spiraling angular velocity with an invariable direction. Numerical simulations demonstrate that the proposed spiral-maneuver control method is effective for a fixed-trim warhead in the mode of single rolling channel control. It is simple and potential to be used in engineering. 2017, Editorial Dept. of JA. All right reserved.
Number of references:14
Main heading:Motion control
Controlled terms:Angular velocity - Numerical methods
Uncontrolled terms:Attitude motions - Back-stepping controls - Fixed-trim warhead - Integrated guidance and controls - Motion variables - Relative motion models - Relative velocity - Spiral maneuver
Classification code:731.3 Specific Variables Control - 921.6 Numerical Methods
DOI:10.3873/j.issn.1000-1328.2017.11.008

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<33>

Accession number:20170303262993
Title:Simple and fast spectral domain algorithm for quantitative phase imaging of living cells with digital holographic microscopy
Authors:Min, Junwei (1, 2); Yao, Baoli (2); Ketelhut, Steffi (1); Engwer, Christian (3); Greve, Burkhard (4); Kemper, Bj?rn (1)
Author affiliation:(1) Biomedical Technology Center, University of Muenster, Mendelstra?e 17, Muenster; D-48149, Germany; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) Institute for Computational and Applied Mathematics, University of Muenster, Orleans-Ring 10, Muenster; D-48149, Germany; (4) Department of Radiotherapy-Radiooncology, University of Muenster, Albert-Schweitzer Campus 1 Building A1, Muenster; D-48149, Germany
Corresponding author:Kemper, Bj?rn(bkemper@uni-muenster.de)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:42
Issue:2
Issue date:January 15, 2017
Publication year:2017
Pages:227-230
Language:English
ISSN:01469592
E-ISSN:15394794
CODEN:OPLEDP
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:We present a simple and fast phase aberration compensation method in digital holographic microscopy (DHM) for quantitative phase imaging of living cells. By analyzing the frequency spectrum of an off-axis hologram, phase aberrations can be compensated for automatically without fitting or pre-knowledge of the setup and/or the object. Simple and effective computation makes the method suitable for quantitative online monitoring with highly variable DHM systems. Results from automated quantitative phase imaging of living NIH-3T3 mouse fibroblasts demonstrate the effectiveness and the feasibility of the method. 2017 Optical Society of America.
Number of references:15
Main heading:Aberrations
Controlled terms:Cell culture - Holograms - Microscopic examination - Online systems - Phase measurement
Uncontrolled terms:Digital holographic microscopy - Frequency spectra - Living cell - Mouse-fibroblasts - Online monitoring - Phase aberrations - Quantitative phase imaging - Spectral domains
Classification code:722.4 Digital Computers and Systems - 743 Holography - 746 Imaging Techniques - 942.2 Electric Variables Measurements
DOI:10.1364/OL.42.000227
Funding details: Number: -, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: -, Acronym: DFG, Sponsor: Deutsche Forschungsgemeinschaft;Number: -, Acronym: DFG, Sponsor: Deutsche Forschungsgemeinschaft;Number: 61405242, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61405242); Cluster of Excellence 1003 of the Deutsche Forschungsgemeinschaft (DFG) (DFG EXC 1003 Cells in Motion); Visiting Scholarship for Young Scientists, Chinese Academy of Science. J. M. was awarded a Visiting Scholarship of the Chinese Academy of Science for Young Scientists.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<34>

Accession number:20180404671057
Title:Improved automatic exposure algorithm for the stereoscopic panoramic camera in space application
Authors:Wang, Jiali (1, 2); Duan, Yongqiang (1); Zheng, Peiyun (1); Gao, Wei (1)
Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104625D
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:The automatic exposure algorithms have been successfully used in a variety of imaging platforms. However, most automatic exposure algorithms are not suitable for the application in space due to the complicated space environment, such as dramatically varying temperature and special space background. Additionally, the algorithms must be designed to adapt to the hardware platform with the limited storage capacity and real-Time capability. This paper proposes an improved automatic exposure algorithm for the special application scenario in space, which is suitable for the real-Time application of space panorama cameras. In this paper, a simulation experiment of the mean-based exposure algorithm is carried out. And the result shows that temperature change and deep dark background in space environment will cause the computation error. So we introduce the iterative calculation and automatic threshold segmentation method to improve the mean-based exposure algorithm. The improved algorithm is implemented using FPGA in standard hardware description language (VHDL), and a test platform to simulating deep space environment is built with a halogen lamp, a whiteboard and a temperature controlled tank in a dark room. The experiment results show that the exposure time almost unchanged when the dark background varies greatly (25% - 100%), which verifies that the effect of dark background is removed. And it can be demonstrated that the influence of temperature on the algorithm is decreased, which based on the experiment result that the exposure time decreases with increasing temperature (15°C to 70°C). 2017 SPIE.
Number of references:12
Main heading:Iterative methods
Controlled terms:Cameras - Computer hardware description languages - Hardware - Space applications - Stereo image processing
Uncontrolled terms:Automatic threshold - Increasing temperatures - Iterative calculation - Panoramic cameras - Real time capability - Real-time application - Special applications - Varying temperature
Classification code:605 Small Tools and Hardware - 656 Space Flight - 723.1.1 Computer Programming Languages - 723.2 Data Processing and Image Processing - 742.2 Photographic Equipment - 921.6 Numerical Methods
Numerical data indexing:Percentage 2.50e+01% to 1.00e+02%, Temperature 2.88e+02K to 3.43e+02K
DOI:10.1117/12.2285786

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<35>

Accession number:20173804167426
Title:Medical Image Fusion Based on Feature Extraction and Sparse Representation (Open Access)
Authors:Fei, Yin (1, 2); Wei, Gao (2); Zongxi, Song (2)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Fei, Yin(yinfei@opt.cn)
Source title:International Journal of Biomedical Imaging
Abbreviated source title:Int. J. Biomed. Imaging
Volume:2017
Issue date:2017
Publication year:2017
Article number:3020461
Language:English
ISSN:16874188
E-ISSN:16874196
Document type:Journal article (JA)
Publisher:Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
Abstract:As a novel multiscale geometric analysis tool, sparse representation has shown many advantages over the conventional image representation methods. However, the standard sparse representation does not take intrinsic structure and its time complexity into consideration. In this paper, a new fusion mechanism for multimodal medical images based on sparse representation and decision map is proposed to deal with these problems simultaneously. Three decision maps are designed including structure information map (SM) and energy information map (EM) as well as structure and energy map (SEM) to make the results reserve more energy and edge information. SM contains the local structure feature captured by the Laplacian of a Gaussian (LOG) and EM contains the energy and energy distribution feature detected by the mean square deviation. The decision map is added to the normal sparse representation based method to improve the speed of the algorithm. Proposed approach also improves the quality of the fused results by enhancing the contrast and reserving more structure and energy information from the source images. The experiment results of 36 groups of CT/MR, MR-T1/MR-T2, and CT/PET images demonstrate that the method based on SR and SEM outperforms five state-of-the-art methods. 2017 Yin Fei et al.
Number of references:38
Main heading:Image enhancement
Controlled terms:Biomedical signal processing - Computerized tomography - Feature extraction - Image fusion - Medical imaging - Medical problems
Uncontrolled terms:Energy distributions - Image representations - Intrinsic structures - Mean square deviation - Multi-scale geometric analysis - Multimodal medical images - Sparse representation - Structure information
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 746 Imaging Techniques
DOI:10.1155/2017/3020461

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<36>

Accession number:20180404671047
Title:A novel remote sensing image fusion scheme based on NSCT and Compressed Sensing
Authors:Wan, Peng (1); Song, Zongxi (2)
Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Wan, Peng
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104624T
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:In this letter, we propose a novel remote sensing image fusion method based on the non-subsampled contourlet transform and the compressed sensing (CS) theory.[2][3] Method First, the IHS transformation of the multispectral images is conducted to extract the I component. Secondly, the panchromatic image and the component intensity of the multispectral image are decomposed by NSCT. Then the NSCT coefficients of high and low frequency subbands are fused by different rules, respectively. For the high frequency subbands, the absolute maximum selection rule is used to integrate high-pass subbands; while the adaptive regional energy weighting rule is proposed to fuse low-pass subbands. The sparse coefficients are fused before being measured by Gaussian matrix. The fused image is accurately reconstructed by Compressive Sampling Matched Pursuit algorithm (CoSaMP). Some experiments are taken to investigate the performance of our proposed method, and the results prove its superiority to the counterparts. 2017 SPIE.
Number of references:10
Main heading:Image fusion
Controlled terms:Adaptive optics - Compressed sensing - Image processing - Remote sensing
Uncontrolled terms:Compressive sampling - Compressive sensing - IHS transformation - Multispectral images - Non-sub-sampled contourlet transforms - Panchromatic images - Pursuit algorithms - Remote sensing images
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics
DOI:10.1117/12.2285590

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<37>

Accession number:20173504083067
Title:Optical intensity square root differentiator based on an integrated Kerr frequency comb source
Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Nguyen, Thach G. (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5, 6, 7); Mitchell, Arnan (2); Moss, David J. (1)
Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia; (3) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (4) Xi'an Institute of Optics and Precision Mechanics Precision Mechanics of CAS, Xi'an, China; (5) INSR-énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Moss, David J.(dmoss@swin.edu.au)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F52-IPRSN 2017
Part number:1 of 1
Issue title:Advanced Photonics, IPRSN 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Advanced Photonics, IPRSN 2017
Conference date:July 24, 2017 - July 27, 2017
Conference location:New Orleans, LA, United states
Conference code:136878
Publisher:OSA - The Optical Society
Abstract:We propose and experimentally demonstrate an optical intensity square root differentiator based on an integrated comb source. The proposed differentiator features full reconfigurablity and compact structure. Transmission responses and temporal characterization are also experimentally demonstrated. OSA 2017.
Number of references:7
Page count:3
Main heading:Fiber optic sensors
Uncontrolled terms:Comb source - Compact structures - Differentiators - Frequency combs - Optical intensities - Reconfigurablity - Square roots - Transmission response
Classification code:741.1.2 Fiber Optics
DOI:10.1364/IPRSN.2017.IW1A.3

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<38>

Accession number:5096588
Title:Hyperspectral Image Superresolution by Transfer Learning
Authors:Yuan, Yuan (1); Zheng, Xiangtao (1); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China
Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)
Source title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Abbreviated source title:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.
Volume:10
Issue:5
Issue date:May 2017
Publication year:2017
Pages:1963-1974
Article number:7855724
Language:English
ISSN:19391404
E-ISSN:21511535
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers
Abstract:Hyperspectral image superresolution is a highly attractive topic in computer vision and has attracted many researchers' attention. However, nearly all the existing methods assume that multiple observations of the same scene are required with the observed low-resolution hyperspectral image. This limits the application of superresolution. In this paper, we propose a new framework to enhance the resolution of hyperspectral images by exploiting the knowledge from natural images: The relationship between low/high-resolution images is the same as that between low/high-resolution hyperspectral images. In the proposed framework, the mapping between low- A nd high-resolution images can be learned by deep convolutional neural network and be transferred to hyperspectral image by borrowing the idea of transfer learning. In addition, to study the spectral characteristic between low- A nd high-resolution hyperspectral image, collaborative nonnegative matrix factorization (CNMF) is proposed to enforce collaborations between the low- A nd high-resolution hyperspectral images, which encourages the estimated solution to extract the same endmembers with low-resolution hyperspectral image. The experimental results on ground based and remote sensing data suggest that the proposed method achieves comparable performance without requiring any auxiliary images of the same scene. ? 2016 IEEE.
Number of references:58
Controlled terms:artificial neural network - computer vision - image resolution - imaging method - mapping - remote sensing
Classification code:71.8.5.4 Remote sensing: numerical and image analysis
DOI:10.1109/JSTARS.2017.2655112

Database:GEOBASE
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<39>

Accession number:20164202908369
Title:Plasmonic Black Absorbers for Enhanced Photocurrent of Visible-Light Photocatalysis
Authors:Tan, Furui (1, 2); Wang, Ning (1, 2); Lei, Dang Yuan (1, 2); Yu, Weixing (3); Zhang, Xuming (1, 2)
Author affiliation:(1) The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen; 518057, Hong Kong; (2) Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong; (3) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Zhang, Xuming(apzhang@polyu.edu.hk)
Source title:Advanced Optical Materials
Abbreviated source title:Adv. Opt. Mater.
Volume:5
Issue:2
Issue date:January 18, 2017
Publication year:2017
Article number:1600399
Language:English
E-ISSN:21951071
Document type:Journal article (JA)
Publisher:Wiley-VCH Verlag
Abstract:Plasmonic resonance of noble metal nanoparticles can drastically enhance the visible response of wide-bandgap photocatalysts such as TiO2, but the current technology has two fundamental problems: narrow absorption band and low absorption, which limit the energy efficiency of photocatalysis using sunlight. Here, an original plasmonic black absorber is reported, which sandwiches a 150 nm TiO2 layer between a layer of random Au nanoparticles and a rough Au surface (200 nm thick). The combined plasmonic effect of the Au nanoparticles and the Au rough surface enables a strong absorption (72%–91%) over 400–900 nm and a significantly (20-fold) enhanced photocurrent as compared to the bare TiO2 film. The strong absorption to visible and near infrared light, and the much enhanced photocurrent make the black absorber an ideal material for solar applications such as photocatalytic, photosynthetic, photovoltaic, and photothermal systems. 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Number of references:39
Main heading:Gold nanoparticles
Controlled terms:Energy efficiency - Gold - Infrared devices - Light - Metal nanoparticles - Photocatalysis - Photocurrents - Plasmonics - Plasmons - Precious metals - Solar absorbers - Solar energy - Solar power generation - Titanium dioxide
Uncontrolled terms:black absorbers - Current technology - Perfect absorber - Photo-thermal systems - Plasmonic resonances - Solar applications - Visible and near infrared - Visible-light photocatalysis
Classification code:525.2 Energy Conservation - 547.1 Precious Metals - 615.2 Solar Power - 657.1 Solar Energy and Phenomena - 741.1 Light/Optics - 761 Nanotechnology - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics
Numerical data indexing:Size 2.00e-07m
DOI:10.1002/adom.201600399
Funding details: Number: 509513, Acronym: -, Sponsor: Hong Kong Arts Development Council;Number: G-YN07, Acronym: -, Sponsor: Hong Kong Polytechnic University;Number: 61377068, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China (no. 61377068), the Research Grants Council of Hong Kong (N_PolyU505/13, PolyU 5334/12E, PolyU 152184/15E, and 509513), and The Hong Kong Polytechnic University (grants G-YN07, G-YBBE, 4-BCAL, 1-ZVAW, 1-ZE14, A-PM21, 1-ZE27, and 1-ZVGH).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<40>

Accession number:20172703875075
Title:Packaging IGBT modules by rapid sintering of nanosilver paste in a current way
Authors:Xie, Yijing (1); Mei, Yunhui (1); Feng, Shuangtao (1); Zhang, Pu (2); Zhang, Long (3); Yang, Yingkun (3)
Author affiliation:(1) School of Material Science and Engineering, Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an, China; (3) Microsystem and Terahertz Research Center, China Academy of Engineering Physics, Chengdu; 610200, China
Corresponding author:Mei, Yunhui(yunhui@tju.edu.cn)
Source title:2017 International Conference on Electronics Packaging, ICEP 2017
Abbreviated source title:Int. Conf. Electron. Pack., ICEP
Part number:1 of 1
Issue title:2017 International Conference on Electronics Packaging, ICEP 2017
Issue date:June 5, 2017
Publication year:2017
Pages:112-116
Article number:7939336
Language:English
ISBN-13:9784990218836
Document type:Conference article (CA)
Conference name:2017 International Conference on Electronics Packaging, ICEP 2017
Conference date:April 19, 2017 - April 22, 2017
Conference location:Tendo, Yamagata, Japan
Conference code:128207
Sponsor:ASE Group; Components, Packaging, and Manufacturing Technology Society Japan Chapter (IEEE CPMT); et al.; International Microelectronics and Packaging Society, iMAPS; Namics; The Japan Institute of Electronics Packaging (JIEP)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Rapid sintering of nanosilver paste had been proposed to bond power chips in our previous work. It seems a potential good way to improve the efficiency of power module manufacturing because of the much shorter sintering time, i.e., 15 seconds. In this study, we tried the way of rapid sintering of nanosilver paste for bonding power chips in order to verify the feasibility of the rapid sintering method. Both the static and the dynamic performance of the IGBT modules using rapid sintered nanosilver as die attachment have been characterized at both room temperature and 150oC. The results shows that this rapid sintering way could be used to bond power chips in a much shorter time to fabricate IGBT modules using nanosilver paste because of the comparable static and dynamic electrical properties as those of commercial IGBT modules with the same power rating from MacMic and Infineon. 2017 Japan Institute of Electronics Packaging.
Number of references:14
Main heading:Sintering
Controlled terms:Chip scale packages - Insulated gate bipolar transistors (IGBT)
Uncontrolled terms:Current sintering - Double pulse - Igbt-modules - Nano silver - Rapid sintering
Classification code:714.2 Semiconductor Devices and Integrated Circuits
Numerical data indexing:Time 1.50e+01s
DOI:10.23919/ICEP.2017.7939336
Funding details: Number: 2015AA034501, Acronym: -, Sponsor: -;Number: 61334010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 13JCQNJC06600, Acronym: -, Sponsor: Natural Science Foundation of Tianjin Municipal Science and Technology Commission;Number: 13ZCZDGX01106, Acronym: -, Sponsor: Natural Science Foundation of Tianjin Municipal Science and Technology Commission;
Funding text:The authors would like to gratefully acknowledge the financial supports from the National Natural Science Foundation of China (No. 61334010), the National High Technology Research and Development Program of China (No. 2015AA034501), and the Tianjin Municipal Natural Science Foundation (Nos. 13ZCZDGX01106 and 13JCQNJC06600).

Database:Compendex
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Accession number:20172003677493
Title:Sparse Learning with Stochastic Composite Optimization
Authors:Zhang, Weizhong (1); Zhang, Lijun (2); Jin, Zhongming (1); Jin, Rong (3); Cai, Deng (1); Li, Xuelong (4); Liang, Ronghua (5); He, Xiaofei (1)
Author affiliation:(1) State Key Lab of CADandCG, College of Computer Science, Zhejiang University, 388 Yuhang Tang Road, Hangzhou, Zhejiang; 310058, China; (2) National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, Jiangsu; 210023, China; (3) Alibaba Group, Seattle; WA; 98057, United States; (4) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transicent Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, Shaanxi; 710119, China; (5) College of Information Engineering, Zhejiang University of Technology, No. 288 Liuhe Road, Hangzhou, Zhejiang; 310058, China
Source title:IEEE Transactions on Pattern Analysis and Machine Intelligence
Abbreviated source title:IEEE Trans Pattern Anal Mach Intell
Volume:39
Issue:6
Issue date:June 1, 2017
Publication year:2017
Pages:1223-1236
Article number:7486981
Language:English
ISSN:01628828
CODEN:ITPIDJ
Document type:Journal article (JA)
Publisher:IEEE Computer Society
Abstract:In this paper, we study Stochastic Composite Optimization (SCO) for sparse learning that aims to learn a sparse solution from a composite function. Most of the recent SCO algorithms have already reached the optimal expected convergence rate O(1/λT), but they often fail to deliver sparse solutions at the end either due to the limited sparsity regularization during stochastic optimization (SO) or due to the limitation in online-to-batch conversion. Even when the objective function is strongly convex, their high probability bounds can only attain O(log(1/δ)/T) with δ is the failure probability, which is much worse than the expected convergence rate. To address these limitations, we propose a simple yet effective two-phase Stochastic Composite Optimization scheme by adding a novel powerful sparse online-to-batch conversion to the general Stochastic Optimization algorithms. We further develop three concrete algorithms, OptimalSL, LastSL and AverageSL, directly under our scheme to prove the effectiveness of the proposed scheme. Both the theoretical analysis and the experiment results show that our methods can really outperform the existing methods at the ability of sparse learning and at the meantime we can improve the high probability bound to approximately O(log(log(T)/δ)/λT). 2016 IEEE.
Number of references:29
Main heading:Stochastic systems
Controlled terms:Optimization - Probability
Uncontrolled terms:Composite functions - Composite optimization - Failure Probability - Objective functions - Sparse learning - Sparsity regularizations - Stochastic optimization algorithm - Stochastic optimizations
Classification code:921.5 Optimization Techniques - 922.1 Probability Theory - 961 Systems Science
DOI:10.1109/TPAMI.2016.2578323
Funding details: Number: 2013CB336500, Acronym: -, Sponsor: -;Number: 61233011, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Basic Research Program of China (973 Program) under Grant 2013CB336500, National Natural Science Foundation of China under Grant 61233011, and National Youth Topnotch Talent Support Program.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<42>

Accession number:20174704432658
Title:The effect factors of the line of sight jitter
Authors:Chang, Sansan (1); Yang, Hongtao (1); Liu, Guangsen (1); Gao, Bo (1); Guo, Yunzeng (1)
Author affiliation:(1) XI'AN Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Source title:Proceedings - 9th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2017
Abbreviated source title:Proc. - Int. Conf. Intell. Hum.-Mach. Syst. Cybern., IHMSC
Volume:2
Part number:2 of 2
Issue title:Proceedings - 9th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2017
Issue date:September 20, 2017
Publication year:2017
Pages:245-248
Article number:8048152
Language:English
ISBN-13:9781538630228
Document type:Conference article (CA)
Conference name:9th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2017
Conference date:August 26, 2017 - August 27, 2017
Conference location:Hangzhou, Zhejiang, China
Conference code:130925
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The stability precision is the key technical factor of optical-electro inertially stabilized platform. Combined with the mechanism of inertially stabilized platform system, the mathematical model of the pitch gimbal of inertially stabilized platform is established. The disturbance impacts of stability precision are analyzed and concluded in this paper. And the expression about how the disturbance source impact line of sight precision are deduced by the analysis of mathematical mode with classical engineering control algorithm. The analyses are validated by simulations and experiments, which may provide the reference for engineering application. 2017 IEEE.
Number of references:6
Main heading:Precision engineering
Controlled terms:Cybernetics - Jitter - Man machine systems
Uncontrolled terms:Disturbance torque - Electromotive torque - Engineering applications - Engineering controls - Gyro noise - Inertially stabilized platforms - Line of Sight - Technical factors
DOI:10.1109/IHMSC.2017.168

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<43>

Accession number:20174404314074
Title:Nuclear Norm-Based 2DLPP for Image Classification
Authors:Lu, Yuwu (1, 2); Yuan, Chun (1, 2); Lai, Zhihui (3); Li, Xuelong (4); Wong, Wai Keung (5); Zhang, David (6)
Author affiliation:(1) Tsinghua-CUHK Joint Research Center for Media Sciences, Technologies, Graduate School at Shenzhen, Tsinghua University, Shenzhen; 518055, China; (2) College of Computer Science and Software Engineering, Shenzhen University, Shenzhen; 518055, China; (3) Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong, Hong Kong; (4) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) Institute of Textiles and Clothing, HongKong Polytechnic University, Hong Kong, Hong Kong; (6) Biometrics Research Center, Hong Kong Polytechnic University, Hong Kong, Hong Kong
Corresponding author:Yuan, Chun(yuanc@sz.tsinghua.edu.cn)
Source title:IEEE Transactions on Multimedia
Abbreviated source title:IEEE Trans Multimedia
Volume:19
Issue:11
Issue date:November 2017
Publication year:2017
Pages:2391-2403
Article number:7924357
Language:English
ISSN:15209210
CODEN:ITMUF8
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Two-dimensional locality preserving projections (2DLPP) that use 2D image representation in preserving projection learning can preserve the intrinsic manifold structure and local information of data. However, 2DLPP is based on the Euclidean distance, which is sensitive to noise and outliers in data. In this paper, we propose a novel locality preserving projection method called nuclear norm-based two-dimensional locality preserving projections (NN-2DLPP). First, NN-2DLPP recovers the noisy data matrix through low-rank learning. Second, noise in data is removed and the learned clean data points are projected on a new subspace. Without the disturbance of noise, data points belonging to the same class are kept as close to each other as possible in the new projective subspace. Experimental results on six public image databases with face recognition, object classification, and handwritten digit recognition tasks demonstrated the effectiveness of the proposed method. 1999-2012 IEEE.
Number of references:62
Main heading:Image classification
Controlled terms:Character recognition - Classification (of information) - Face recognition - Two dimensional
Uncontrolled terms:Handwritten digit recognition - Locality preserving projections - Object classification - preserving projections - Public image database - robust - Two-dimensional locality preserving projection (2DLPP) - Two-dimensional locality preserving projections
Classification code:716.1 Information Theory and Signal Processing
DOI:10.1109/TMM.2017.2703130
Funding details: Number: 2016M590100, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: 2011AA01A205, Acronym: -, Sponsor: -;Number: 61602270, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:Manuscript received October 19, 2016; revised February 27, 2017 and April 26, 2017; accepted May 4, 2017. Date of publication May 10, 2017; date of current version October 13, 2017. This work was supported in part by the Natural Science Foundation of China under Grant 61602270, Grant 61375012, Grant 61573248, Grant 61761130079, and Grant U1433112, in part by the China Postdoctoral Science Foundation under Grant 2016M590100 and Grant 2016M590812, and in part by the National High Technology Research and Development Plan (863 Plan) under Grant 2011AA01A205. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Wolfgang Hürst. (Corresponding author: Chun Yuan.) Y. Lu and C. Yuan are with the Tsinghua-CUHK Joint Research Center for Media Sciences, Technologies, and Systems, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China (e-mail: luyuwu2008@163.com; yuanc@sz.tsinghua.edu.cn).

Database:Compendex
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Accession number:20172403762954
Title:Generation of carrier-envelope phase stabilized laser from solid plates and application in high-harmonic generation
Authors:Liu, Yangyang (1); He, Peng (2); Zhao, Kun (1); Huang, Hangdong (2); Jiang, Yujiao (2); Huang, Pei (3); Teng, Hao (1); He, Xinkui (1); Fang, Shaobo (1); Hou, Xun (3); Wei, Zhiyi (1)
Author affiliation:(1) Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (2) School of Physics and Optoelectronics Engineering, Xidian University, Xi'an; 710071, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F43-CLEO_AT 2017
Part number:1 of 1
Issue title:CLEO: Applications and Technology, CLEO_AT 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:CLEO: Applications and Technology, CLEO_AT 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:135878
Publisher:OSA - The Optical Society
Abstract:We demonstrated carrier-envelope phase (CEP) stabilized pulse as short as 5.4fs by compressing the octave-spanning spectrum from solid-state plates. Continuous and discrete HHG were observed by using the laser pulse as driver with different CEP. 2017 OSA.
Number of references:8
Page count:2
Main heading:Harmonic generation
Uncontrolled terms:Carrier-envelope phase - High harmonic generation - Octave-spanning spectra - Solid plates - Stabilized lasers
Numerical data indexing:Time 5.40e-15s
DOI:10.1364/CLEO_AT.2017.AF1B.4

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<45>

Accession number:20180404671595
Title:Integrated generation of complex optical quantum states and their coherent control
Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Romero Cortés, Luis (1); Sciara, Stefania (1, 3); Wetzel, Benjamin (1, 4); Zhang, Yanbing (1); Cino, Alfonso (3); Chu, Sai T. (5); Little, Brent E. (6); Moss, David J. (7); Caspani, Lucia (8, 9); Aza?a, José (1); Morandotti, Roberto (1, 10, 11)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Palermo, Italy; (4) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (5) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (6) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G1 1RD, United Kingdom; (9) Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh; EH14 4AS, United Kingdom; (10) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (11) National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10456
Part number:1 of 1
Issue title:Nanophotonics Australasia 2017
Issue date:2017
Publication year:2017
Article number:104561A
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510613935
Document type:Conference article (CA)
Conference name:Nanophotonics Australasia 2017
Conference date:December 10, 2017 - December 13, 2017
Conference location:Melbourne, VIC, Australia
Conference code:133393
Sponsor:AXT Inc.; Lastek; neaspec GmbH; PriTel, Inc.; Swinburne University of Technology; WITec
Publisher:SPIE
Abstract:Complex optical quantum states based on entangled photons are essential for investigations of fundamental physics and are the heart of applications in quantum information science. Recently, integrated photonics has become a leading platform for the compact, cost-efficient, and stable generation and processing of optical quantum states. However, onchip sources are currently limited to basic two-dimensional (qubit) two-photon states, whereas scaling the state complexity requires access to states composed of several (<2) photons and/or exhibiting high photon dimensionality. Here we show that the use of integrated frequency combs (on-chip light sources with a broad spectrum of evenly-spaced frequency modes) based on high-Q nonlinear microring resonators can provide solutions for such scalable complex quantum state sources. In particular, by using spontaneous four-wave mixing within the resonators, we demonstrate the generation of bi- and multi-photon entangled qubit states over a broad comb of channels spanning the S, C, and L telecommunications bands, and control these states coherently to perform quantum interference measurements and state tomography. Furthermore, we demonstrate the on-chip generation of entangled high-dimensional (quDit) states, where the photons are created in a coherent superposition of multiple pure frequency modes. Specifically, we confirm the realization of a quantum system with at least one hundred dimensions. Moreover, using off-the-shelf telecommunications components, we introduce a platform for the coherent manipulation and control of frequencyentangled quDit states. Our results suggest that microcavity-based entangled photon state generation and the coherent control of states using accessible telecommunications infrastructure introduce a powerful and scalable platform for quantum information science. COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:20
Main heading:Quantum entanglement
Controlled terms:Four wave mixing - Light - Light sources - Nanophotonics - Photonics - Photons - Quantum communication - Quantum computers - Quantum optics - Resonators
Uncontrolled terms:Coherent manipulation - Coherent superpositions - Frequency combs - Integrated photonics - Nonlinear process - Quantum information science - Spontaneous four-wave mixing - Telecommunications infrastructures
Classification code:716 Telecommunication; Radar, Radio and Television - 722 Computer Systems and Equipment - 741.1 Light/Optics - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics
DOI:10.1117/12.2286435
Funding details: Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: IT06530, Acronym: -, Sponsor: Mitacs;Number: 207748, Acronym: -, Sponsor: -;Number: 7004189, Acronym: CityU, Sponsor: City University of Hong Kong;Number: -, Acronym: REA, Sponsor: Research Executive Agency;Number: 656607, Acronym: -, Sponsor: -;Number: XDB24030300, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: PIOF-GA-2013-625466, Acronym: -, Sponsor: -;Number: 074-U 01, Acronym: -, Sponsor: Government Council on Grants, Russian Federation;Number: DP150104327, Acronym: -, Sponsor: -;Number: -, Acronym: -, Sponsor: Canada Research Chairs;
Funding text:We thank R. Helsten for technical insights; P. Kung from QPS Photronics for the help and processing equipment; as well as QuantumOpus and N. Bertone of OptoElectronics Components for their support and for providing us with state-of-the-art photon detection equipment. This work was made possible by the following funding sources: Natural Sciences and Engineering Research Council of Canada (NSERC) (Steacie, Strategic, Discovery, and Acceleration Grants Schemes, Vanier Canada Graduate Scholarships, USRA Scholarship); Mitacs (IT06530) and PBEEE (207748); MESI

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<46>

Accession number:20170303255295
Title:Efficient point matching under uneven and dramatic illumination changes
Authors:Yang, Rui (1, 2); Liu, Zhaohui (1); Yang, Tao (1, 2); Li, Wenhao (1, 2)
Author affiliation:(1) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, No. 17 Xinxi Road, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, No. 19A Yuquanlu, Beijing; 100049, China
Corresponding author:Yang, Rui(yangrui@opt.cn)
Source title:Journal of Electronic Imaging
Abbreviated source title:J. Electron. Imaging
Volume:26
Issue:1
Issue date:January 1, 2017
Publication year:2017
Article number:013001
Language:English
ISSN:10179909
E-ISSN:1560229X
CODEN:JEIME5
Document type:Journal article (JA)
Publisher:SPIE
Abstract:Point matching under illumination changes is significant for many vision information applications. However, the uneven and dramatic illumination variations model is rarely considered in existing point matching algorithms. Therefore, a method to match features efficiently under uneven and dramatic illumination changes is presented. This method extracts and describes illumination invariant interesting points from matched multibrightness layers that are obtained by a set of contrast stretching functions and prior information based on original images. Layers matching is insensitive to large unevenness of illumination changes and provides similar images in brightness and structure, so the effects of large uneven illumination changes can be reduced greatly. This algorithm is compatible with most detectors and descriptors. To accelerate the computing speed, the features from the accelerated segment test detector and the improved speeded up robust features descriptor are chosen in this paper. In addition, the combination of priority Hamming distance matching and Lowe's matching algorithms is first proposed to increase the matching speed. This method is generic and can be used in most point matching under all varying illumination conditions. Experimental results demonstrate that the proposed method improves the quality of matched points significantly. 2017 SPIE and IS&T.
Number of references:31
Main heading:Hamming distance
Controlled terms:Computer applications - Imaging techniques
Uncontrolled terms:Illumination conditions - Illumination invariant - Illumination variation - matched multibrightness layers - Point-matching - priority Hamming distance matching - Speeded up robust features - Uneven illuminations
Classification code:723.5 Computer Applications - 746 Imaging Techniques
DOI:10.1117/1.JEI.26.1.013001

Database:Compendex
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<47>

Accession number:20170503309096
Title:Passively mode-locked laser with an ultra-narrow spectral width
Authors:Kues, Michael (1, 2); Reimer, Christian (1); Wetzel, Benjamin (1, 3); Roztocki, Piotr (4); Little, Brent E. (5); Chu, Sai T. (1); Hansson, Tobias (1); Viktorov, Evgeny A. (6); Moss, David J. (7); Morandotti, Roberto (1, 6, 8)
Author affiliation:(1) Institut National de la Recherche Scientifique-Energie Materiaux Telecommunications, 1650 Boulevard Lionel-Boulet, Varennes; QLD; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xinxi Ave, Xi'an, Shaanxi, China; (5) Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, Hong Kong; (6) National Research University of Information Technologies, Mechanics and Optics, Petersburg; 199034, Russia; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of Chin, Chengdu Sichuan; 610054, China
Source title:Nature Photonics
Abbreviated source title:Nat. Photon.
Volume:11
Issue:3
Issue date:March 1, 2017
Publication year:2017
Pages:159-162
Language:English
ISSN:17494885
E-ISSN:17494893
Document type:Journal article (JA)
Publisher:Nature Publishing Group, Houndmills, Basingstoke, Hampshire, RG21 6XS, United Kingdom
Abstract:Most mode-locking techniques introduced in the past focused mainly on increasing the spectral bandwidth to achieve ultrashort, sub-picosecond-long coherent light pulses. By contrast, less importance seemed to be given to mode-locked lasers generating Fourier-Transform-limited nanosecond pulses, which feature the narrow spectral bandwidths required for applications in spectroscopy, the efficient excitation of molecules, sensing and quantum optics. Here, we demonstrate a passively mode-locked laser system that relies on simultaneous nested cavity filtering and cavity-enhanced nonlinear interactions within an integrated microring resonator. This allows us to produce optical pulses in the nanosecond regime (4.3 ns in duration), with an overall spectral bandwidth of 104.9 MHz-more than two orders of magnitude smaller than previous realizations. The very narrow bandwidth of our laser makes it possible to fully characterize its spectral properties in the radiofrequency domain using widely available GHz-bandwidth optoelectronic components. In turn, this characterization reveals the strong coherence of the generated pulse train.

Number of references:31
Main heading:Mode-locked fiber lasers
Controlled terms:Bandwidth - Fourier series - Laser pulses - Lasers - Passive mode locking - Quantum optics
Uncontrolled terms:Microring resonator - Mode-locking techniques - Nonlinear interactions - Optoelectronic components - Orders of magnitude - Passively mode-locked lasers - Spectral bandwidth - Spectral properties
Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 744.1 Lasers, General - 921.3 Mathematical Transformations
Numerical data indexing:Time 4.30e-09s
DOI:10.1038/nphoton.2016.271
Funding details: Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;
Funding text:Natural Sciences and Engineering Research Council of Canada (NSERC)

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.ErratuFlg:618120623

 

<48>

Accession number:20170603336018
Title:High-efficiency supercontinuum generation in solid thin plates at 0.1 TW level
Authors:He, Peng (1, 2); Liu, Yangyang (2); Zhao, Kun (2); Teng, Hao (2); He, Xinkui (2); Huang, Pei (3); Huang, Hangdong (1); Zhong, Shiyang (2); Jiang, Yujiao (1); Fang, Shaobo (2); Hou, Xun (3); Wei, Zhiyi (2)
Author affiliation:(1) School of Physics and Optoelectronics Engineering, Xidian University, Xi'an; 710071, China; (2) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Zhao, Kun(zhaokun@iphy.ac.cn)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:42
Issue:3
Issue date:February 1, 2017
Publication year:2017
Pages:474-477
Language:English
ISSN:01469592
E-ISSN:15394794
CODEN:OPLEDP
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Supercontinuum generation in a solid-state medium was investigated experimentally. A continuum covering 460 to 950 nm was obtained when 0.8 mJ/30 fs Ti:sapphire laser pulses were applied to seven thin fused silica plates at a 1 kHz repetition rate. The primary processes responsible for spectral broadening were self-phase modulation (SPM) and self-steepening, while SPM and self-focusing were balanced to optimize the spectral broadening and suppress the multiphoton process. The output was compressed to a 5.4 fs and a 0.68 mJ pulse, corresponding to two optical cycles and 0.13 TW of peak power. 2017 Optical Society of America.
Number of references:41
Main heading:Supercontinuum generation
Controlled terms:Fused silica - Multiphoton processes - Pulse repetition rate - Sapphire - Self phase modulation
Uncontrolled terms:Fused silica plates - High-efficiency - Optical cycles - Repetition rate - Self-focusing - Self-steepening - Spectral broadening - Ti: Sapphire laser
Classification code:482.2.1 Gems - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 812.3 Glass
Numerical data indexing:Energy 6.80e-04J, Frequency 1.00e+03Hz, Power 1.00e+11W, Power 1.30e+11W, Size 4.60e-07m to 9.50e-07m, Time 5.40e-15s
DOI:10.1364/OL.42.000474
Funding details: Number: 2013CB922401, Acronym: -, Sponsor: -;Number: 2013CB922402, Acronym: -, Sponsor: -;Number: 11574384, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11434016, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61575219, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61210017, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Key Basic Research Program of China (2013CB922401, 2013CB922402); National Natural Science Foundation of China (NSFC) (11434016, 11574384, 61575219); International Joint Research Program of the National Natural Science Foundation of China (61210017).

Database:Compendex
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<49>

Accession number:20175204570947
Title:Design of compact high zoom ratio infrared optical system
Authors:Qu, Rui (1); Mei, Chao (1); Yang, Hongtao (1); Cao, Jianzhong (1); Zhao, Yan (2)
Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Luoyang Electro-optical Equipment Research Institute of Aviation Industry Corporation of China, Luoyang; 471009, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:11
Issue date:November 25, 2017
Publication year:2017
Article number:1104002
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:In order to solve the problems in high zoom ratio lens design, a two-stage-of-series zoom lens model was proposed based on optics zoom theory. Therefore, differential zoom equations were deduced and solved to help the lens power assignments, also the cam curve optimization condition and method were proved. In this model, first stage zoom was achieved by the two-part-zoom front part, and the given movement pattern of the compensation lens and the second magnified lens determined the second stage zoom, by which the 100% cooled stop efficiency was assured. Based on this method, a 70x MWIR zoom lens under the requirements of F/4, focal length 6.5-455 mm, HFOV 0.92°-58.2°, work waveband 3.7-4.8 μm was designed, which only used two kinds of infrared materials, consisted of 10 lenses, total length 300 mm, had good image quality and tolerance character. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:15
Main heading:Lenses
Controlled terms:Curve fitting - Infrared radiation - Optical design - Optical systems
Uncontrolled terms:Focal lengths - High zoom ratio - Infrared material - Infrared optical systems - Infrared technology - Movement pattern - Optimization conditions - Zoom lens
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.6 Numerical Methods
Numerical data indexing:Percentage 1.00e+02%, Size 3.00e-01m, Size 3.70e-06m to 4.80e-06m, Size 6.50e-03m to 4.55e-01m
DOI:10.3788/IRLA201746.1104002

Database:Compendex
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<50>

Accession number:20171703607581
Title:Design of VisSWIR continuous zoom optical system
Authors:Yang, Mingyang (1, 2); Yang, Hongtao (1, 2); Qu, Ruia (1); Mei, Chaoa (1); Zhou, Zuofeng (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, Beijing; 100049, China
Corresponding author:Yang, Mingyang(yangmingyang@opt.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102564P
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:For 640 pixel×512 pixel cooled staring focal plane array detector, a VisSWIR wideband continuous zoom optical system with 7X zoom range is presented based on the pattern of the negative zoom group and compensating lens group. The zoom system provides continuous changed in the field of view from narrow to the wide. The zoom optical system works in the range of 0.4μm~1.7μm, F number is 4, the pixel of the detector is 15μm. It realizes 20mm~140mm continuous zoom with a smooth zoom path and provided high image quality with the whole zoom range, the zoom ratio is 7:1. The modulation transfer function(MTF) for the system is above 0.5 within the whole focal length range at spatial frequency of 34lp/mm and it almost approaches the diffraction limit. RMS value of spot diameter was investigation, the maximum distortion value is less than 5% and the surface type of all lens applied is spherical. Moreover, the cam curve after optimization is given by the optical design software Code V macro. The design results provide that the zoom system has the small size, high resolution, excellent image quality and the smooth cam curve etc. 2017 SPIE.
Number of references:19
Main heading:Optical systems
Controlled terms:Curve fitting - Diffraction - Image quality - Lenses - Macros - Optical design - Optical transfer function - Photonics - Pixels
Uncontrolled terms:Cam curve - Diffraction limits - Focal plane array detector - Modulation transfer function (MTF) - Optical-design software - VisSWIR - Wide-band - Zoom optical system
Classification code:723.1 Computer Programming - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.6 Numerical Methods
Numerical data indexing:Percentage 5.00e+00%, Size 1.50e-05m
DOI:10.1117/12.2259866

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20173904206114
Title:A calibration mechanism based on worm drive for space telescope
Authors:Chong, Yaqin (1, 2); Li, Chuang (1); Xia, Siyu (1); Zhong, Peifeng (1, 2); Lei, Wang (1)
Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xian, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10339
Part number:1 of 1
Issue title:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers
Issue date:2017
Publication year:2017
Article number:103391S
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510611238
Document type:Conference article (CA)
Conference name:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers
Conference date:May 21, 2017 - May 24, 2017
Conference location:Shanghai, China
Conference code:130514
Publisher:SPIE
Abstract:In this paper, a new type of calibration mechanism based on worm drive is presented for a space telescope. This calibration mechanism based on worm drive has the advantages of compact size and self-lock. The mechanism mainly consists of thirty-six LEDs as the light source for flat calibration, a diffuse plate, a step motor, a worm gear reducer and a potentiometer. As the main part of the diffuse plate, a PTFE tablet is mounted in an aluminum alloy frame. The frame is fixed on the shaft of the worm gear, which is driven by the step motor through the worm. The shaft of the potentiometer is connected to that of the worm gear to measure the rotation angle of the diffuse plate through a flexible coupler. Firstly, the calibration mechanism is designed, which includes the LEDs assembly design, the worm gear reducer design and the diffuse plate assembly design. The counterweight blocks and two end stops are also designed for the diffuse plate assembly. Then a modal analysis with finite element method for the diffuse plate assembly is completed. 2017 SPIE.
Number of references:8
Main heading:Finite element method
Controlled terms:Aluminum alloys - Assembly - Calibration - High power lasers - Laser damage - Light emitting diodes - Modal analysis - Optical materials - Potentiometers (electric measuring instruments) - Potentiometers (resistors) - Space telescopes - Speed reducers - Stepping motors - Worm gears
Uncontrolled terms:Assembly designs - Compact size - counterweigh block - Gear reducers - Mechanism-based - Plate assemblies - Rotation angles - Self locks
Classification code:541.2 Aluminum Alloys - 601.2 Machine Components - 602 Mechanical Drives and Transmissions - 704.1 Electric Components - 705.3 Electric Motors - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 921 Mathematics - 921.6 Numerical Methods - 942.1 Electric and Electronic Instruments
DOI:10.1117/12.2269878

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<52>

Accession number:20160902031393
Title:Coarse-to-Fine Learning for Single-Image Super-Resolution
Authors:Zhang, Kaibing (1); Tao, Dacheng (2); Gao, Xinbo (3); Li, Xuelong (4); Li, Jie (5)
Author affiliation:(1) School of Computer and Information Science, Hubei Engineering University, Xiaogan, Hubei; 432000, China; (2) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology Sydney, 81 Broadway Street, Ultimo; NSW; 2007, Australia; (3) State Key Laboratory of Integrated Services Networks, School of Electronic Engineering, Xidian University, Xi'an, Shaanxi; 710071, China; (4) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (5) Video and Image Processing System Laboratory, School of Electronic Engineering, Xidian University, Xi'an, Shaanxi; 710071, China
Corresponding author:Zhang, Kaibing
Source title:IEEE Transactions on Neural Networks and Learning Systems
Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.
Volume:28
Issue:5
Issue date:May 2017
Publication year:2017
Pages:1109-1122
Article number:7412770
Language:English
ISSN:2162237X
E-ISSN:21622388
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:This paper develops a coarse-to-fine framework for single-image super-resolution (SR) reconstruction. The coarse-to-fine approach achieves high-quality SR recovery based on the complementary properties of both example learning-and reconstruction-based algorithms: example learning-based SR approaches are useful for generating plausible details from external exemplars but poor at suppressing aliasing artifacts, while reconstruction-based SR methods are propitious for preserving sharp edges yet fail to generate fine details. In the coarse stage of the method, we use a set of simple yet effective mapping functions, learned via correlative neighbor regression of grouped low-resolution (LR) to high-resolution (HR) dictionary atoms, to synthesize an initial SR estimate with particularly low computational cost. In the fine stage, we devise an effective regularization term that seamlessly integrates the properties of local structural regularity, nonlocal self-similarity, and collaborative representation over relevant atoms in a learned HR dictionary, to further improve the visual quality of the initial SR estimation obtained in the coarse stage. The experimental results indicate that our method outperforms other state-of-the-art methods for producing high-quality images despite that both the initial SR estimation and the followed enhancement are cheap to implement. 2012 IEEE.
Number of references:42
Main heading:Image enhancement
Controlled terms:Optical resolving power
Uncontrolled terms:Correlative neighbor regression (CNR) - Non-local means - Regularization terms - Self-similarities - Single images
Classification code:741.1 Light/Optics
DOI:10.1109/TNNLS.2015.2511069

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20181104902971
Title:Novel frontiers in the stabilization of FD-FWM microcombs
Authors:Bao, Hualong (1); Cooper, Andrew (1); Chu, Sai T. (2); Moss, David J. (3); Morandotti, Roberto (4); Little, Brent E. (5); Peccianti, Marco (1); Pasquazi, Alessia (1)
Author affiliation:(1) Emergent Photonics Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (3) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2., Canada; (5) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China
Source title:ICOCN 2017 - 16th International Conference on Optical Communications and Networks
Abbreviated source title:ICOCN - Int. Conf. Optical Commun. Networks
Volume:2017-January
Part number:1 of 1
Issue title:ICOCN 2017 - 16th International Conference on Optical Communications and Networks
Issue date:November 27, 2017
Publication year:2017
Pages:1-3
Language:English
ISBN-13:9781538632734
Document type:Conference article (CA)
Conference name:16th International Conference on Optical Communications and Networks, ICOCN 2017
Conference date:August 7, 2017 - August 10, 2017
Conference location:Wuzhen, China
Conference code:133380
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In this contribution, we will review our recent activities in the development of double nested cavity lasers. Several stable operating regimes can be achieved over a wide range of conditions. 2017 IEEE.
Number of references:7
Main heading:Resonators
Controlled terms:Optical communication
Uncontrolled terms:Cavity lasers - Micro resonators - Microcombs - Operating regimes - Optical frequency combs
Classification code:717.1 Optical Communication Systems
DOI:10.1109/ICOCN.2017.8121593

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<54>

Accession number:20172203698751
Title:Meter-scale thin film coating equipment based on meniscus-coating technology
Authors:Xu, Jia (1); Xu, Wen-Bin (1); Bu, He-Yang (1); Lu, Zheng-Wu (1); Liu, Zheng-Kun (2); Hong, Yi-Lin (2); Yu, Wei-Xing (3)
Author affiliation:(1) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China; (2) University of Science and Technology of China, Hefei; 230026, China; (3) Key Laboratory of Spectral Imaging Technology of CAS, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Changchun; 710119, China
Corresponding author:Yu, Wei-Xing(yuwx@opt.ac.cn)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:1
Issue date:January 1, 2017
Publication year:2017
Pages:133-140
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:The meniscus chemical coating technology becomes a very promising new chemical thin-film coating technology after traditional coating technologies such as spin-coating and spray coating due to its merits of large area, low-cost and high efficiency. To meet the requirements of one national major projects on the meter-scale chemical thin film coating of optical component surface, based on the systematical research of the meniscus chemical film coating principal, static and dynamic gluing experiments were respectively conducted, and the relationships among the gluing pressure, the gap between substrate and slit, the material hydrophobicity and the morphology of meniscus were analyzed, then the fine tuning of the meniscus could be achieved and equipment based on the meniscus chemical thin film coating technology was developed. The coating uniformity of photo-resist was realized using this equipment on the glass substrate sizing 1400 mm×420 mm, making overall coating thickness error less than 4% and satisfying coating requirements of meter-scale chemical precision thin film coating of optical component surface. 2017, Science Press. All right reserved.
Number of references:25
Main heading:Optical films
Controlled terms:Chemical analysis - Chemical equipment - Coating techniques - Coatings - Film thickness - Gluing - Substrates - Thickness measurement - Thin films
Uncontrolled terms:Chemical coatings - Large area - Liquid level - Meniscus - Optical components
Classification code:741.3 Optical Devices and Systems - 802.1 Chemical Plants and Equipment - 813.1 Coating Techniques - 813.2 Coating Materials - 943.2 Mechanical Variables Measurements
Numerical data indexing:Percentage 4.00e+00%
DOI:10.3788/OPE.20172501.0133

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20172203698744
Title:Radiometric calibration of photographic camera with a composite plane array CCD in laboratory
Authors:Li, Jing (1); Zhao, Jian-Ke (1); Chang, Ming (1); Hu, Xin-Rong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Li, Jing(lijing@opt.ac.cn)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:1
Issue date:January 1, 2017
Publication year:2017
Pages:73-83
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:To eliminate the serious vignetting phenomenon and to solve the difficulty of choosing a relatively positioning target value problems among CCDs during the radiometric calibration of the whole image plane of the photographic camera with a composite plane array CCD, a method for radiometric calibration of multi-CCDs was proposed. After the dark signal calibration on each pixel, the gray value of the pixel in the vignetting area was revised, and by choosing the appropriate relative calibration target gray value of the whole image plane, the radiometric calibration of the photographic camera with a composite plane array CCD was eventually completed. Through analysis of the gray distribution characteristics of vignetting area, the gray correction method for all kinds of explosion time and radiance was proposed. With calculation of fitting coefficient between each CCD gray value and the input radiance respectively, the coefficient with global minimum fitting error was chosen to calculate the relative calibration target gray value corresponding to radiance. After the radiometric calibration using this method, the non-uniformity of the whole image plane of the photographic camera with a composite plane array CCD is reduced from above 20% to better than 2%, and the accuracy of the absolute calibration is 4.23%. The result indicates that the proposed calibration method is appropriate for the calibration of composite planes array CCD. The accuracy of the calibration satisfies the radiometric calibration requirement of aerial cameras. 2017, Science Press. All right reserved.
Number of references:15
Main heading:Calibration
Controlled terms:Antennas - CCD cameras - Pixels - Radiometry
Uncontrolled terms:Absolute calibration - Array CCD - Fitting coefficient - Non-uniformities - Photographic camera - Radiometric calibrations - Relative calibrations - Vignetting
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 944.8 Radiation Measurements
Numerical data indexing:Percentage 2.00e+00%, Percentage 4.23e+00%
DOI:10.3788/OPE.20172501.0073

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20181605019536
Title:A parallel linearized ADMM with application to multichannel tgv-based image restoration
Authors:He, Chuan (1); Hu, Changhua (1); Li, Xuelong (2)
Author affiliation:(1) High-tech Institute of xi'An, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China
Source title:Proceedings - International Conference on Image Processing, ICIP
Abbreviated source title:Proc. Int. Conf. Image Process. ICIP
Volume:2017-September
Part number:1 of 1
Issue title:2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings
Issue date:July 2, 2017
Publication year:2017
Pages:1187-1191
Language:English
ISSN:15224880
ISBN-13:9781509021758
Document type:Conference article (CA)
Conference name:24th IEEE International Conference on Image Processing, ICIP 2017
Conference date:September 17, 2017 - September 20, 2017
Conference location:Beijing, China
Conference code:134723
Sponsor:The Institute of Electrical and Electronics Engineers Signal Processing Society
Publisher:IEEE Computer Society
Abstract:A parallel linearized alternating direction method of multipliers (PLADMM) is proposed to solve large-scale imaging inverse problems, which involve the sum of several linear-operator-coupled nonsmooth terms. In the proposed method, the proximity operators of the nonsmooth terms are called individually at each iteration and the auxiliary variables existing in the classical ADMM are excluded. Therefore, the proposed method possesses a highly parallel structure and most of its substeps can be executed simultaneously. The application to multichannel total generalized variation (TGV) based image restoration shows the effectiveness of the proposed method. 2017 IEEE.
Number of references:16
Main heading:Image reconstruction
Controlled terms:Inverse problems - Iterative methods - Linearization - Mathematical operators - Restoration
Uncontrolled terms:Alternating direction method of multipliers - Auxiliary variables - Generalized variation - Highly parallels - Linear operators - Nonsmooth optimization - PLADMM - Proximity operator
Classification code:921.6 Numerical Methods
DOI:10.1109/ICIP.2017.8296469

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<57>

Accession number:20174504368393
Title:Transmit-receive Isolation Analysis and Test of Cassegrain Optical Antenna
Authors:Xia, Fang-Yuan (1, 2, 3); Yang, Jian-Feng (1); Yao, Zhou-Shi (3); Li, Shuai (3); Wang, Bo (3); Chen, Xiang (3)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Xi'an Institute of SPACE Radio Technology, Xi'an; 710100, China
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:10
Issue date:October 1, 2017
Publication year:2017
Article number:1023001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Two schemes such as single pixel signal to noise ratio and extinction ratio are used to evaluate transmit-receive isolation ability based on the practical application of the tracking and communication detector in laser communication system. A method to inhibit the back scattering light was presented which boring a hole in the secondary mirror and increasing light trap. It is derived that when aperture ratio of secondary mirror K is 0.1~0.3, it dose not affect the emission efficiency, the measured results show that the improved Cassegrain optical antenna Transmit-Receive isolation is lower than -40 dB while not affecting the emission efficiency of system, and meet the requirements of laser communication system acquiring, tracking and communication. 2017, Science Press. All right reserved.
Number of references:13
Main heading:Optical communication
Controlled terms:Antennas - Backscattering - Efficiency - Integrated optics - Laser mirrors - Light extinction - Optical instruments - Signal to noise ratio - Stray light
Uncontrolled terms:Aperture ratio - Cassegrain optical antennas - Emission efficiencies - Extinction ratios - Isolation - Isolation analysis - Measured results - Secondary mirror
Classification code:716.1 Information Theory and Signal Processing - 717.1 Optical Communication Systems - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 913.1 Production Engineering - 941.3 Optical Instruments
Numerical data indexing:Decibel -4.00e+01dB
DOI:10.3788/gzxb20174610.1023001
Funding details: Number: 61231012, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (No.61231012).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20161402198767
Title:Joint Dictionary Learning for Multispectral Change Detection
Authors:Lu, Xiaoqiang (1); Yuan, Yuan (1); Zheng, Xiangtao (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Source title:IEEE Transactions on Cybernetics
Abbreviated source title:IEEE Trans. Cybern.
Volume:47
Issue:4
Issue date:April 2017
Publication year:2017
Pages:884-897
Article number:7422756
Language:English
ISSN:21682267
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Change detection is one of the most important applications of remote sensing technology. It is a challenging task due to the obvious variations in the radiometric value of spectral signature and the limited capability of utilizing spectral information. In this paper, an improved sparse coding method for change detection is proposed. The intuition of the proposed method is that unchanged pixels in different images can be well reconstructed by the joint dictionary, which corresponds to knowledge of unchanged pixels, while changed pixels cannot. First, a query image pair is projected onto the joint dictionary to constitute the knowledge of unchanged pixels. Then reconstruction error is obtained to discriminate between the changed and unchanged pixels in the different images. To select the proper thresholds for determining changed regions, an automatic threshold selection strategy is presented by minimizing the reconstruction errors of the changed pixels. Adequate experiments on multispectral data have been tested, and the experimental results compared with the state-of-the-art methods prove the superiority of the proposed method. Contributions of the proposed method can be summarized as follows: 1) joint dictionary learning is proposed to explore the intrinsic information of different images for change detection. In this case, change detection can be transformed as a sparse representation problem. To the authors' knowledge, few publications utilize joint learning dictionary in change detection; 2) an automatic threshold selection strategy is presented, which minimizes the reconstruction errors of the changed pixels without the prior assumption of the spectral signature. As a result, the threshold value provided by the proposed method can adapt to different data due to the characteristic of joint dictionary learning; and 3) the proposed method makes no prior assumption of the modeling and the handling of the spectral signature, which can be adapted to different data. 2017 IEEE.
Number of references:59
Main heading:Image reconstruction
Controlled terms:Errors - Pixels - Remote sensing
Uncontrolled terms:Automatic threshold selection - Change detection - Dictionary learning - Multi-temporal remote sensing - Remote sensing technology - Sparse representation - Spectral information - State-of-the-art methods
DOI:10.1109/TCYB.2016.2531179

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20170803367452
Title:Secrecy-Optimized Resource Allocation for Device-to-Device Communication Underlaying Heterogeneous Networks
Authors:Zhang, Kecheng (1); Peng, Mugen (1); Zhang, Ping (2); Li, Xuelong (3)
Author affiliation:(1) Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing; 100876, China; (2) State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing; 100876, China; (3) Center for Optical Imagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Peng, Mugen(pmg@bupt.edu.cn)
Source title:IEEE Transactions on Vehicular Technology
Abbreviated source title:IEEE Trans. Veh. Technol.
Volume:66
Issue:2
Issue date:February 2017
Publication year:2017
Pages:1822-1834
Article number:7467574
Language:English
ISSN:00189545
CODEN:ITVTAB
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Device-to-device (D2D) communications have recently attracted much attention for the potential capability to improve spectral efficiency (SE) underlaying the existing heterogeneous networks (HetNets). Due to no sophisticated control, D2D-worked user equipments (DUEs) themselves cannot resist eavesdropping or security attacks. It is urgent to maximize the secure capacity for both cellular users and DUEs. This paper formulates the radio resource-allocation problem to maximize the secure capacity of DUEs for D2D communication underlaying HetNets, which consist of high-power nodes (HPNs) and low-power nodes (LPNs). The optimization objective function with transmit bit rate and power constraints, which is nonconvex and hard to directly derive, is first transformed into a matrix form. Then, the equivalent convex form of the optimization problem is derived according to Perron-Frobenius theory. A heuristic iterative algorithm based on the proximal theory is proposed to solve this equivalent convex problem through evaluating the proximal operator of the Lagrange function. Numerical results show that the proposed radio resource-allocation solution significantly improves the secure capacity with a fast convergence speed. 2016 IEEE.
Number of references:26
Main heading:Network security
Controlled terms:Heterogeneous networks - Iterative methods - Optimization - Resource allocation
Uncontrolled terms:Device-to-Device communications - Deviceto-device (D2D) communication - Heterogeneous Network (HetNet) - Heterogeneous network (HetNets) - Heuristic iterative algorithms - Optimization objective function - Radio resource allocation - Secure capacity
Classification code:723 Computer Software, Data Handling and Applications - 912.2 Management - 921.5 Optimization Techniques - 921.6 Numerical Methods
DOI:10.1109/TVT.2016.2566298
Funding details: Number: 2014AA01A701, Acronym: -, Sponsor: -;Number: 2016ZX03001020-006, Acronym: -, Sponsor: -;Number: 61271198, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61361166005, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: KZ201511232036, Acronym: -, Sponsor: Beijing Municipal Commission of Education;
Funding text:This work was supported in part by the National High Technology Research and Development Program of China under Grant 2014AA01A701, by the National Natural Science Foundation of China under Grant 61361166005 and Grant 61271198, by the Science and Technology Development Project of Beijing Municipal Education Commission of China under Grant KZ201511232036, by the National Program for Support of Top-notch Young Professionals, and by the State Major Science and Technology Special Projects under Grant 2016ZX03001020-006.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20180404670997
Title:Taylor series-based generic demosaicking algorithm for multispectral image
Authors:Tonghan, Jia (1, 2); Zhang, Geng (1); Liu, Xuebin (1)
Author affiliation:(1) Xi'an Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:1046237
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Using coated mosaic video spectrometer to collect multispectral image which reduce the spectral information redundancy and data volume greatly and achieve real-Time data transmission conditions. The mosaic video spectrometer imaging technique use a similar mosaic template to capture all the pixels and output a two-dimensional multi-spectral image with dozens of spectral information. The image is divided into a certain size of matrix in its field, and each pixel in the pixel matrix is only for one wavelength information response and every pixel response for different wavelength. The size of the pixel matrix block depends on the number of spectral segments, which results in a low spatial resolution of the single spectral segment image and the spectral information of each pixel absenting severely. Therefore, to reconstruct the complete multi-spectral image, we must estimate and interpolate the missing spatial information and spectral information by demosaicking multispectral image. In this paper, we present a novel demosaicking method to produce the high resolution multispectral image and reconstruct missing spectrum information in high accuracy. The proposed method computes the first-And second-order derivatives of the original single multispectral image to measure the geometry of edges in the image and the spectrum value of missing pixel. Two metrics are used to evaluate the generic algorithm, including the structural similarity index-measurement system (SSIM) for reconstruction performance and the procession time. Experimental results show that the demosaicked images present higher SSIM (more than 0.9) and comparable calculated time performance as traditional ways. This algorithm brings the greatest advantage that make up for the weakness of mosaick multispectral image and reduce the data transmission process cost and storage needs. 2017 SPIE.
Number of references:12
Main heading:Pixels
Controlled terms:Computer programming - Computerized tomography - Data transfer - Digital storage - Image reconstruction - Image segmentation - Matrix algebra - Spectrometers - Spectroscopy
Uncontrolled terms:Demosaicking - Mosaic template - Multispectral images - Real time data transmission - Second order derivatives - Spatial informations - Spectrum information - Structural similarity indices
Classification code:722.1 Data Storage, Equipment and Techniques - 723.1 Computer Programming - 723.5 Computer Applications - 741.3 Optical Devices and Systems - 921.1 Algebra
DOI:10.1117/12.2285052
Funding details: Number: -, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China (No. 61501456) and "Light of West China" Program of Chinese Academy of Science.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20180404671009
Title:Automatic detection of cloud in high-resolution remote sensing images based on adaptive SLIC and MFC
Authors:Kang, Chaomeng (1, 2); Liu, Jiahang (1); Yu, Kai (1, 2); Lu, Zhuanli (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:1046249
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Reliable cloud detection plays an important role in the manufacture of remote sensing and the alarm of natural calamities. However, it makes the task difficult with high-resolution remote sensing images with complex background and various types of clouds with different concentration, color and shapes. Related works mostly used gray, shape and texture features to detect clouds, which obtain results with poor robustness and efficiency. To detect cloud more automatically and robustly, we propose a novel could detection method based on the fusion of local optimum by adaptive simple linear iterative clustering (ASLIC) and the whole optimum by bilateral filtering with an improved saliency detection method. After this step, we trained a multi-feature fusion model based support vector machine(SVM) used geometric feature: fractal dimension index (FRAC) and independence index (IDD) which is proposed by us to describe the piece of region's spatial distribution, texture feature: We use four angles to calculate the gray-level co-occurrence matrix (GLXM) about entropy, energy, contrast, homogeneity, spectral feature(SF): After principal component analysis(PCA) we choose the first bond, the second bond and the near infrared bond(NIR). Besides, in view of the disturbance of water, ice, we also use NDVI and HOT index to estimate the model. Compared to the traditional methods of SLIC,our new method for cloud detection is accurate, and robust when dealing with clouds of different types and sizes over various land satellite images. 2017 SPIE.
Number of references:31
Main heading:Remote sensing
Controlled terms:Adaptive optics - Fractal dimension - Infrared devices - Iterative methods - Learning systems - Principal component analysis - Support vector machines
Uncontrolled terms:Automatic Detection - Bilateral filtering - Cloud detection - Complex background - Gray level co-occurrence matrix - High resolution remote sensing images - Multi-feature fusion - Simple Linear Iterative Clustering
Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods - 922.2 Mathematical Statistics
DOI:10.1117/12.2285505
Funding details:
Funding text:Acknowledgments: The authors would like to thank National Key Research and Development Program through Grant

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20174204273360
Title:Nested grazing incidence optics for x ray detection
Authors:Li, Lin-Sen (1, 2, 3); Qiang, Peng-Fei (1, 3); Sheng, Li-Zhi (3); Liu, Yong-An (1, 3); Liu, Zhe (3); Liu, Duo (1, 3); Zhao, Bao-Sheng (3); Zhang, Chun-Min (2)
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) School of Science, Xi'An Jiaotong University, Xi'an; 710119, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an; 710119, China
Corresponding author:Qiang, Peng-Fei(qiangpengfei@opt.ac.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:26
Issue:10
Issue date:October 2017
Publication year:2017
Article number:100703
Language:English
ISSN:16741056
E-ISSN:20583834
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:Grazing incidence optics (GIO) is the most important compound in an x-ray detection system; it is used to concentrate the x-ray photons from outer space. A nested planar GIO for x-ray concentration is designed and developed by authors in this paper; planar segments are used as the reflection mirror instead of curved segments because of the simple process and low cost. After the complex assembling process with a special metal supporter, a final circle light spot of φ12 mm was obtained in the visible light testing experiment of GIO; the effective area of 1710.51 mm2@1 keV and 530 mm2@8 keV is obtained in the x-ray testing experiment with the GIO-SDD combination, which is supposed to be a concentrating detector in xray detection systems. 2017 Chinese Physical Society and IOP Publishing Ltd.
Number of references:16
Main heading:X ray detectors
Controlled terms:Light - Metal testing - X rays
Uncontrolled terms:Assembling process - Effective area - Grazing incidence optics - Planar segments - Reflection mirrors - X ray photons - X-ray detection system - X-ray detections
Classification code:741.1 Light/Optics - 932.1 High Energy Physics
DOI:10.1088/1674-1056/26/10/100703
Funding details: Number: SKLGIE2014-M-2-1, Acronym: -, Sponsor: -;Number: 61471357, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:?Project supported by the National Natural Science Foundation of China (Grant No. 61471357) and the State Key Laboratory of Geo-Information Engineering Foundation (Grant No. SKLGIE2014-M-2-1). ?Corresponding author. E-mail: qiangpengfei@opt.ac.cn

Database:Compendex
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Accession number:20172503802226
Title:Analysis of the influence of diattenuation on optical imaging system by using the theory of vector plane wave spectrum
Authors:Zhang, Min-Rui (1, 2); He, Zheng-Quan (1); Wang, Tao (1); Tian, Jin-Shou (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Zhang, Min-Rui(m_rzhang@163.com)
Source title:Wuli Xuebao/Acta Physica Sinica
Abbreviated source title:Wuli Xuebao
Volume:66
Issue:8
Issue date:April 20, 2017
Publication year:2017
Article number:084202
Language:Chinese
ISSN:10003290
CODEN:WLHPAR
Document type:Journal article (JA)
Publisher:Institute of Physics, Chinese Academy of Sciences
Abstract:In most of the researches of polarization aberration, the influence of diattenuation is not large enough to affect imaging quality evidently. However, the modulation transfer function decreases when optical elements with complex planar dielectric structures and low transmittance, such as beam-splitter and optical modulator, are introduced into an imaging system. In this paper, a vector optical model in Descartes coordinate system is proposed based on the concept of vector plane wave spectrum (VPWS). The results of calculation show that the VPWS model is consistent with Debye model. Compared with Debye vector diffraction integral, the VPWS method is more suitable to the description of the PA introduced by planar optical device with opaque mask, such as larger surface quantum-confined-stark-effect electro-absorption modulator, which is used to modulate the light collected by optical antenna of time-of-flight (TOF) depth system or modulating-retroreflector free-space-optical communication system. In order to simplify the calculation and obtain the conclusion of the change in imaging quality directly, the formula of optical transfer function is decomposed into three parts (TE component, TM component and the correlation of them) instead of polynomial expansion of pupil function. The influences of diattenuation on MTF is studied globally and locally in a range of cut-off frequency of optical imaging system (2NA/λ). Allowance of diattenuation is analysed by numerical calculation, and a mathematical expression is derived. The result shows that the change of diattenuation can be neglected when the spatial frequency v is less than 0.2NA/λ, and the range of allowance decreases with the increase of spatial frequency. According to numerical calculation shown in Fig.7 and the derived formulas (15) and (16), the ratios of reflection/transmission coefficient of s-light and p-light √Dαshould range respectively from 0.63 to 1.6(0.2NA/λ < v < 0.8NA/λ) and from 0.9 to 1.11(v>0.8NA/λ ) when the MTF is required to be not less than 90% of the value in ideal diffraction-limited system. The range of allowance becomes larger gradually with the increase of angle θnbetween the normal of optical interface n and the optical axis of imaging system z. If a polarization beam splitter is considered, √Dα→∞,θnsin-1NA should be greater than 1-3. 2017 Chinese Physical Society.
Number of references:23
Main heading:Optical communication
Controlled terms:Antennas - Diffraction - Elastic waves - Electric current control - Free flight - Imaging systems - Light - Light modulators - Modulation - Optical beam splitters - Optical correlation - Optical image storage - Optical instruments - Optical signal processing - Optical transfer function - Polarization - Prisms - Semiconductor quantum wells - Transfer functions - Vector spaces - Vectors
Uncontrolled terms:Diffraction-limited systems - Free space optical communication systems - Mathematical expressions - Modulating retro-reflectors - Planar optical devices - Polarization aberration - Polarization beam splitters - Quantum confined stark effect
Classification code:651.1 Aerodynamics, General - 714.2 Semiconductor Devices and Integrated Circuits - 717.1 Optical Communication Systems - 722.1 Data Storage, Equipment and Techniques - 731.3 Specific Variables Control - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques - 921 Mathematics - 921.1 Algebra - 931.1 Mechanics - 941.3 Optical Instruments
Numerical data indexing:Percentage 9.00e+01%
DOI:10.7498/aps.66.084202
Funding details: Number: 11274377, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZDY2011-2, Acronym: -, Sponsor: -;
Funding text:Project supported by the National Natural Science Foundation of China (Grant No.11274377) and the State Major Research Equipment Project, China (Grant No. ZDY2011-2).

Database:Compendex
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Accession number:20170103208641
Title:Electron optics design of an 8-in. spherical MCP-PMT
Authors:Chen, Ping (1, 2, 4); Tian, Jinshou (1, 4); Qian, Sen (3); Zhao, Tianchi (3); Liu, Hulin (1); Wei, Yonglin (1); Sai, Xiaofeng (1); He, Jianping (1); Wang, Xing (1); Lu, Yu (1); Chen, Lin (1, 2); Guo, Lehui (1, 2); Pei, Chengquan (1, 2); Hui, Dandan (1, 2)
Author affiliation:(1) Key Laboratory of Ultra-fast photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China; (4) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; Shanxi; 030006, China
Corresponding author:Chen, Ping
Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abbreviated source title:Nucl Instrum Methods Phys Res Sect A
Volume:848
Issue date:March 11, 2017
Publication year:2017
Pages:1-8
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:This paper discusses the electron optical system of an 8-in. spherical MCP-PMT. The MCP assembly, the supporting pole and the supply voltages are carefully designed to optimize the photoelectron collection efficiency and the transit time spread. Coating the MCP nickel-chromium electrode with an additional high secondary emission material is employed to make a breakthrough on the collection efficiency. With the simulation software CST, the Finite Integration method and the Monte Carlo method are combined to evaluate the collection efficiency, the time properties and the Earth's magnetic field effects. Simulation results show that the photocathode active solid angle is over 3.5 πsr, the average collection efficiency can exceed 95% with the coated MCP and the mean transit time spread is 2.2 ns for a typical electric potential of 500 V applied between the photocathode and the MCP input facet. The prototype and the measured single photoelectron spectrum are also presented. 2016 Elsevier B.V.
Number of references:8
Main heading:Monte Carlo methods
Controlled terms:Computer software - Efficiency - Electric potential - Electrooptical effects - Magnetic field effects - Nickel coatings - Optical systems - Photocathodes - Photoelectron spectroscopy - Photoelectrons - Photomultipliers - Photons - Phototubes - Secondary emission
Uncontrolled terms:Collection efficiency - MCP-PMT - Photo multiplier tube - Secondary emission yield - Transit time spread
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 714.1 Electron Tubes - 723 Computer Software, Data Handling and Applications - 741.3 Optical Devices and Systems - 813.2 Coating Materials - 913.1 Production Engineering - 922.2 Mathematical Statistics - 931.3 Atomic and Molecular Physics
Numerical data indexing:Percentage 9.50e+01%, Size 2.03e-01m
DOI:10.1016/j.nima.2016.11.054
Funding details: Number: 11305258, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The work is supported by a grant from the National Natural Science Foundation of China. [Grant no. 11305258].

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<65>

Accession number:20173104014349
Title:A Method for Solving the Refractive Index Temperature Coefficient Empirical Formula Constants of Optical Glasses Based on 1st Opt
Authors:Ma, Zhi-Yuan (1); Wang, Peng-Fei (2); Wu, Zhi-Qiang (1); Wu, De-Lin (1); Su, Yong (1)
Author affiliation:(1) Test Technology Research Institute, CDGM GLASS Co., Ltd., Chengdu; 610000, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Wang, Peng-Fei(pfwang@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:6
Issue date:June 1, 2017
Publication year:2017
Article number:0616002
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:In order to solve the problem that large deviation of the refraction index and temperature coefficient of refraction index obtained by regression calculation from the experimentally measured ones comes out when ZEMAX method is used for solving these empirical formula constants and regression calculation, 1stOpt differential evolution was used to calculate the temperature coefficient of refraction index empirical formula constants. With fluoro-crown D-FK61 and flint H-TF3A optical glass as examples, the λtkcoefficients calculated by the proposed method are consistent with the general numerical range of 0.08~0.33, and the difference of refractive index and its temperature coefficient between the value obtained by regression calculation method and the measured value is less than 1×10-5and 2×10-7/℃, respectively. As an effective supplement of ZEMAX software to calculate the temperature coefficient of refractive index of the optical glasses, the proposed method greatly improves the accuracy and can provide accurate optical parameter guarantee for thermal compensation optical system design. 2017, Science Press. All right reserved.
Number of references:16
Main heading:Refractive index
Controlled terms:Evolutionary algorithms - Numerical methods - Optical glass - Optical systems - Optimization - Refraction - Regression analysis - Temperature
Uncontrolled terms:Differential Evolution - Empirical formulas - Inorganic materials - Large deviations - Optical parameter - Refraction index - Temperature coefficient - Thermal compensation
Classification code:641.1 Thermodynamics - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 921.5 Optimization Techniques - 921.6 Numerical Methods - 922.2 Mathematical Statistics
DOI:10.3788/gzxb20174606.0616002
Funding details: Number: 2016YFB0303805, Acronym: -, Sponsor: -;Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (No. 61307046) and State Key Research and Development Plan (No. 2016YFB0303805).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<66>

Accession number:20173404074971
Title:Normalized euclidean super-pixels for medical image segmentation
Authors:Liu, Feihong (1); Feng, Jun (1); Su, Wenhuo (2); Lv, Zhaohui (1); Xiao, Fang (1); Qiu, Shi (3)
Author affiliation:(1) School of Information and Technology, Northwest University, Xi’an, China; (2) Center for Nonlinear Studies, Department of Mathematicals, Northwest University, Xi’an, China; (3) Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an, China
Corresponding author:Feng, Jun(fengjun@nwu.edu.cn)
Source title:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Abbreviated source title:Lect. Notes Comput. Sci.
Volume:10363 LNAI
Part number:3 of 3
Issue title:Intelligent Computing Methodologies - 13th International Conference, ICIC 2017, Proceedings
Issue date:2017
Publication year:2017
Pages:586-597
Language:English
ISSN:03029743
E-ISSN:16113349
ISBN-13:9783319633145
Document type:Conference article (CA)
Conference name:13th International Conference on Intelligent Computing, ICIC 2017
Conference date:August 7, 2017 - August 10, 2017
Conference location:Liverpool, United kingdom
Conference code:195469
Publisher:Springer Verlag
Abstract:We propose a super-pixel segmentation algorithm based on normalized Euclidean distance for handling the uncertainty and complexity in medical image. Benefited from the statistic characteristics, compactness within super-pixels is described by normalized Euclidean distance. Our algorithm banishes the balance factor of the Simple Linear Iterative Clustering framework. In this way, our algorithm properly responses to the lesion tissues, such as tiny lung nodules, which have a little difference in luminance with their neighbors. The effectiveness of proposed algorithm is verified in The Cancer Imaging Archive (TCIA) database. Compared with Simple Linear Iterative Clustering (SLIC) and Linear Spectral Clustering (LSC), the experiment results show that, the proposed algorithm achieves competitive performance over super-pixel segmentation in the state of art. Springer International Publishing AG 2017.
Number of references:12
Main heading:Medical image processing
Controlled terms:Clustering algorithms - Image segmentation - Intelligent computing - Iterative methods - Medical imaging - Pixels
Uncontrolled terms:Competitive performance - Euclidean distance - Linear spectral - Local compactness - Segmentation algorithms - Simple Linear Iterative Clustering - Statistic characteristics - Uncertainty and complexity
Classification code:723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 746 Imaging Techniques - 903.1 Information Sources and Analysis - 921.6 Numerical Methods
DOI:10.1007/978-3-319-63315-2_51
Funding details: Number: 61372046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by National Natural Science Foundation of China (No. 61372046).

Database:Compendex
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Accession number:20164703040835
Title:A robust stereo matching algorithm based on improved epipolar distance transformation
Authors:Yue, Qi (1, 2, 3); Ma, Caiwen (1); Cao, Xiaoqian (2, 3, 4)
Author affiliation:(1) Xi'an University of Posts and Telecommunications, Xi'an; 710121, China; (2) Xi'an Institute of Optics and Precision Mechanic, CAS, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100039, China; (4) Shaanxi University of Science and Technology, Xi'an; 710021, China
Corresponding author:Yue, Qi(yueqi6@163.com)
Source title:Optik
Abbreviated source title:Optik
Volume:130
Issue date:February 1, 2017
Publication year:2017
Pages:91-98
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:Aim to the problem of initial epipolar distance transformation algorithm is sensitive to illumination and depth discontinuous, an improved stereo matching algorithm is proposed. In Delta-Gama log-chromaticity space, Gamma correction coefficient is computed firstly according to raw disparity map which is used to Modified the similarity function bandwidth. Secondly, by employing image structure and color features, the segment of epipolar is obtained adaptively. At last, final disparity map is acquired by belief propagation method. Experimental results demonstrate the effectiveness of the proposed transform in illumination change regions and discontinuities regions. The matching rate of proposed algorithm is improved about 60%, comparing with the initial epipolar distance transformation algorithm and state-of-art algorithm such as ANCC(Adaptive Normalized Cross Correlation). 2016 Elsevier GmbH
Number of references:13
Main heading:Stereo image processing
Controlled terms:Computer vision - Image segmentation - Stereo vision
Uncontrolled terms:Belief propagation - Distance transformation - Illumination changes - Normalized cross correlation - Radiometric varying - Similarity functions - Stereo matching - Stereo matching algorithm
Classification code:723.2 Data Processing and Image Processing - 723.5 Computer Applications
Numerical data indexing:Percentage 6.00e+01%
DOI:10.1016/j.ijleo.2016.11.054
Funding details: Number: 2010AA7080302, Acronym: -, Sponsor: -;Number: KGCX1-YW-16, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61275134, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is partially supported by National 863 high technology research and development program (No.: 2010AA7080302 ), Knowledge innovation project of Chinese Academy of Sciences (No. KGCX1-YW-16 ) and National Natural Science Foundation of China (No. 61275134 ).

Database:Compendex
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Accession number:20171903655160
Title:1.5-MHz repetition rate passively Q-switched Nd:YVO4laser based on WS2saturable absorber
Authors:Wang, Xi (1, 2); Li, Lu (1, 2); Li, Jin-Ping (3); Wang, Yong-Gang (1, 3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China
Corresponding author:Wang, Yong-Gang(chinawygxjw@snnu.edu.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:26
Issue:4
Issue date:April 2017
Publication year:2017
Article number:044203
Language:English
ISSN:16741056
E-ISSN:20583834
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:A transmission-type tungsten disulfide (WS2)-based saturable absorber (SA) is fabricated and applied to passively Q-switched Nd:YVO4laser. The WS2nanosheets are deposited on a quartz substrate by the vertical evaporation method. By inserting the WS2SA into the plano-concave laser cavity, we achieve 153-ns pulses with an average output power of 1.19Wat 1064 nm. To the best of our knowledge, both of them are the best results among those obtained by the Q-switched solid-state lasers with WS2-based absorbers. The repetition rate ranges from 1.176 MHz to 1.578 MHz. As far as we know, it is the first time that MHz level Q-switched pulses have been generated in all solid state lasers based on low-dimensional materials so far. 2017 Chinese Physical Society and IOP Publishing Ltd.
Number of references:44
Main heading:Solid state lasers
Controlled terms:Neodymium compounds - Optical materials - Q switched lasers - Q switching - Saturable absorbers - Single crystals - Sulfur compounds - Tungsten compounds
Uncontrolled terms:All solid-state lasers - Average output power - Evaporation method - Low-dimensional materials - Non-linear optical material - Passively Q-switched - Q-switched solid-state lasers - Tungsten disulfide
Classification code:741.3 Optical Devices and Systems - 744 Lasers - 933.1 Crystalline Solids
Numerical data indexing:Frequency 1.18e+06Hz to 1.58e+06Hz, Frequency 1.50e+06Hz, Size 1.06e-06m, Time 1.53e-07s
DOI:10.1088/1674-1056/26/4/044203
Funding details: Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Project supported by the National Natural Science Foundation of China (Grant No. 61378024).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20170203239137
Title:A new kind of vertically aligned field emission transistor with a cylindrical vacuum channel
Authors:Shen, Zhihua (1); Wang, Xiao (1); Wu, Shengli (1); Tian, Jinshou (2)
Author affiliation:(1) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an; 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China
Corresponding author:Wu, Shengli(slwu@mail.xjtu.edu.cn)
Source title:Vacuum
Abbreviated source title:Vacuum
Volume:137
Issue date:March 1, 2017
Publication year:2017
Pages:163-168
Language:English
ISSN:0042207X
CODEN:VACUAV
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:This study investigated a vertically aligned field emission transistor with a cylindrical vacuum channel. The channel length of this proposed transistor can be precisely controlled and easily fabricated to be comparable to the mean free path of electrons in air so that the device can operate in the air without performance degradation. In the study, this vacuum transistor showed a low threshold voltage (1.2 V, 2.2 V, and 3.3 V) with a gate dielectric thickness of 10 nm, 15 nm, and 20 nm and a subthreshold slope of 1.1 V/dec. It was found that the vacuum channel radius should be no less than 20 nm, otherwise, severe performance degradation will appear due to the effect of the gate shield (leading to reduction of the anode current) and electron collision events with the dielectric layer (presenting reliability issues). This kind of vacuum transistor may have wide applications in extreme conditions such as high temperature and intense irradiation. 2017
Number of references:25
Main heading:Transistors
Controlled terms:Field emission - Gate dielectrics - High temperature applications - Threshold voltage
Uncontrolled terms:Field emission transistors - Finite integration technique - Gate dielectric thickness - Low threshold voltage - Mean free path of electrons - Performance degradation - Vacuum channels - Vertically aligned
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits
DOI:10.1016/j.vacuum.2017.01.002
Funding details: Number: 61275023, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 51271140, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China (51271140, 61275023).

Database:Compendex
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Accession number:20171303500899
Title:A hydrophobic and abrasion-resistant MgF2coating with an ultralow refractive index for double-layer broadband antireflective coatings
Authors:Cui, Xinmin (1, 2); Ding, Ruimin (1); Wang, Mengchao (1, 2); Wang, Conghui (1, 2); Zhang, Jing (1, 2); Wang, Jing (1, 2); Dong, Wensheng (3); Xu, Yao (4)
Author affiliation:(1) Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; 030001, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory of Applied Surface & Colloid Chemistry of Ministry of Education, Shaanxi Normal University, Shaanxi; 710119, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi; 710119, China
Corresponding author:Ding, Ruimin
Source title:Journal of Materials Chemistry C
Abbreviated source title:J. Mater. Chem. C
Volume:5
Issue:12
Issue date:2017
Publication year:2017
Pages:3088-3096
Language:English
ISSN:20507534
E-ISSN:20507526
CODEN:JMCCCX
Document type:Journal article (JA)
Publisher:Royal Society of Chemistry
Abstract:An ultralow-index top layer is a prerequisite to preparing high-performance broadband AR coatings. When coupled with hydrophobicity and the abrasion-resistance required in practical applications, the challenge becomes even greater. In this work, a MgF2AR coating was studied because of the low refractive index of MgF2and its easily realized strong adhesion through low-temperature heat treatment. In order to obtain an ultralow refractive index and endow the coating with hydrophobicity, we designed several experimental routes and finally adopted MTES/TEOS co-precursors to direct MgF2particles to form a honeycomb-like network structure without a template. A final refractive index of 1.15 and good hydrophobicity, with a water contact angle of 122°, were obtained using the MgF2-SiO2(CH3) coating. These superior properties were attributed to the incorporation of methyl groups, which not only endowed the coating with hydrophobicity, but also changed the original linear assembly of MgF2particles to a circular assembly. Using this hydrophobic ultralow-index coating as a top layer, a high-performance double-layer AR coating was fabricated with a high average transmittance of 99.43% in the wavelength range of 400-1000 nm, good abrasion-resistance, and damp heat resistance after a low-temperature heat treatment of 250 °C. This MgF2double-layer AR coating may be used in display devices or lenses. The Royal Society of Chemistry.
Number of references:34
Main heading:Magnesium compounds
Controlled terms:Abrasion - Antireflection coatings - Display devices - Heat resistance - Heat treatment - Hydrophobicity - Low temperature operations - Refractive index - Silica - Temperature - Tribology - Wear resistance
Uncontrolled terms:Abrasion resistant - Anti reflective coatings - Broadband AR coatings - Low refractive index - Network structures - Ultralow refractive indices - Water contact angle - Wavelength ranges
Classification code:537.1 Heat Treatment Processes - 641.1 Thermodynamics - 722.2 Computer Peripheral Equipment - 741.1 Light/Optics - 813.2 Coating Materials - 931 Classical Physics; Quantum Theory; Relativity - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
Numerical data indexing:Percentage 9.94e+01%, Size 4.00e-07m to 1.00e-06m, Temperature 5.23e+02K
DOI:10.1039/c6tc05307f
Funding details: Number: -, Acronym: -, Sponsor: Shaanxi Normal University;Number: U1530148, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors gratefully acknowledge the support from the Natural Science Foundation of China ?Project U1530148?. We also acknowledge the open fund of Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University).

Database:Compendex
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<71>

Accession number:20173003982915
Title:Nanosecond pulse signals restoration via stochastic resonance in the Fabry-Perot cavity with graphene
Authors:Chang, Zheng (1, 3); Liu, Hongjun (1, 2); Huang, Nan (1); Wang, Zhaolu (1); Han, Jing (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi; 030006, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:EPJ Applied Physics
Abbreviated source title:EPJ Appl Phys
Volume:79
Issue:2
Issue date:August 1, 2017
Publication year:2017
Article number:20502
Language:English
ISSN:12860042
E-ISSN:12860050
CODEN:EPAPFV
Document type:Journal article (JA)
Publisher:EDP Sciences
Abstract:We investigate a technology for reconstructing nanosecond pulse noise hidden signals via stochastic resonance, which is based on optical bistability in the Fabry-Perot (F-P) cavity with graphene. The bistable properties are analyzed with different initial wavelengths and Fermi energies. The system is tunable and the bistable behavior of the output intensity can be accurately controlled to obtain a cross-correlation gain larger than 10 in a wide range of input signal-to-noise (SNR) ratio from 1:8 to 1:45. Meanwhile, the distortion of the output signal and the pulse tailing caused by the phase delay can be reduced to a negligible level. This work provides a potential method for detecting low-level or hidden pulse signals in various communication fields. 2017 EDP Sciences.
Number of references:28
Main heading:Signal to noise ratio
Controlled terms:Circuit resonance - Fabry-Perot interferometers - Graphene - Magnetic resonance - Signal reconstruction - Stochastic systems
Uncontrolled terms:Communication fields - Cross correlations - Fabry-Perot cavity - Nanosecond pulse - Nanosecond pulse signal - Output intensity - Potential methods - Stochastic resonances
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.1 Electric Networks - 716.1 Information Theory and Signal Processing - 761 Nanotechnology - 804 Chemical Products Generally - 941.3 Optical Instruments - 961 Systems Science
DOI:10.1051/epjap/2017170145
Funding details: Number: 61505247, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 11604377, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 61275134, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: QNLM2016ORP0111, Acronym: QNLM, Sponsor: Qingdao National Laboratory for Marine Science and Technology;
Funding text:This research is supported by the National Nature Science Foundation of China under Grant Nos. 61505247, 11604377 and 61275134, also financially supported by Qingdao National Laboratory for Marine Science and Technology (QNLM2016ORP0111).

Database:Compendex
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<72>

Accession number:20181104893549
Title:Development of the electronics system prototype of the high-speed camera
Authors:Zheng, Yang (1, 2); Li, Ruimin (1, 2); Song, Zongxi (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi'an, Shaanxi Province, China; (2) University of Chinese Academy of Sciences, Beijing, China
Source title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017
Abbreviated source title:Proc. IEEE Inf. Technol. Mechatronics Eng. Conf., ITOEC
Volume:2017-January
Part number:1 of 1
Issue title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017
Issue date:November 27, 2017
Publication year:2017
Pages:1155-1159
Language:English
ISBN-13:9781509053629
Document type:Conference article (CA)
Conference name:3rd IEEE Information Technology and Mechatronics Engineering Conference, ITOEC 2017
Conference date:October 3, 2017 - October 5, 2017
Conference location:Chongqing, China
Conference code:133411
Sponsor:Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Global Union Academy of Science and Technology; IEEE Beijing Section
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The high-speed camera is an imaging device that records a particular transient state or all of the high-speed processes. It can accurately record the transient process of the high-speed target in real time and thus allow us to achieve the purpose of analysis of high-speed process through the slow motion playback. So the high-speed camera becomes an important tool for the study of the transient phenomena. This paper presents the development of a high-speed imaging system, which was build based upon a CMOS (Complementary Metal Oxide Semiconductor) image sensor and a high density FPGA (Field Programmable Gate Array) and USB 3.0 (Universal Serial Bus 3.0). In this paper, the design methodology and the electronics system architecture are briefly discussed. Besides, the designs and implements are particularly depicted. Finally the experimental verification shows the correlated results. The system has the advantage of high frame rate, high resolution, high performance and flexibility. 2017 IEEE.
Number of references:7
Main heading:High speed cameras
Controlled terms:CMOS integrated circuits - Field effect transistors - Field programmable gate arrays (FPGA) - Image sensors - Metals - MOS devices - Oxide semiconductors - Speed - System buses
Uncontrolled terms:CMOS (complementary metal oxide semiconductor) - CMOS image sensor - Experimental verification - Fpga(field programmable gate array) - High speed imaging systems - Transient phenomenon - Universal serial bus - USB3.0
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 722.2 Computer Peripheral Equipment - 742.2 Photographic Equipment
DOI:10.1109/ITOEC.2017.8122537

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<73>

Accession number:20181705047001
Title:A design of high-precision BLDCM drive with bus voltage protection
Authors:Lian, Xuezheng (1); Wang, Haitao (1); Xie, Meilin (1, 2); Huang, Wei (1); Li, Dawei (1); Jing, Feng (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Shaanxi, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10605
Part number:1 of 1
Issue title:LIDAR Imaging Detection and Target Recognition 2017
Issue date:2017
Publication year:2017
Article number:1060510
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510617063
Document type:Conference article (CA)
Conference name:LIDAR Imaging Detection and Target Recognition 2017
Conference date:July 23, 2017 - July 25, 2017
Conference location:Changchun, China
Conference code:133763
Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering (CSOE); National Natural Science Foundation of China
Publisher:SPIE
Abstract:In the application of space satellite turntable, the design of balance wheel is very necessary. To solve the acquisition precision of Brushless DC motor speed is low, and the encoder is also more complex, this paper improves the original hall signal measurement methods. Using the logic device to achieve the six frequency multiplication of hall signal, the signal is used as speed feedback to achieve speed closed-loop control and improve the speed stability. At the same time, in order to prevent the E.M.F of BLDC motor to raise the voltage of the bus bar when reversing or braking, and affect the normal operation of other circuit modules, the analog circuit is used to protect the bus bar voltage by the way of energy consumption braking. The experimental results are consistent with the theoretical design, and the rationality and feasibility of the frequency multiplication scheme and bus voltage protection scheme are verified. 2017 SPIE.
Number of references:9
Main heading:Surge protection
Controlled terms:Braking - Brushless DC motors - Busbars - Electric drives - Electric motors - Energy utilization - Flywheels - Logic devices - Optical radar - Wheels
Uncontrolled terms:Balance wheels - BLDC motors - Bus voltage - Frequency multiplication - Normal operations - Space satellites - Speed closed-loop control - Theoretical design
Classification code:525.3 Energy Utilization - 601.1 Mechanical Devices - 601.2 Machine Components - 602 Mechanical Drives and Transmissions - 704 Electric Components and Equipment - 705.3 Electric Motors - 705.3.2 DC Motors - 716.2 Radar Systems and Equipment - 721.2 Logic Elements
DOI:10.1117/12.2286416

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<74>

Accession number:20181104893726
Title:Embedded measurement system of two-dimensional autocollimator based on FPGA
Authors:Gao, Xiang (1); Hu, Xiaodong (2); Yang, Donglai (2); Zhang, Jian (3)
Author affiliation:(1) College of Physics and Information Technology, Shaanxi Normal University, Xi'an Beijing, China; (2) Xi'an Institute of Optics and Precision Mechanics, Academy of Sciences of China, Xi'an Beijing, China; (3) Beijing Institute of Control and Electronic Technology, Xi'an Beijing, China
Source title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017
Abbreviated source title:Proc. IEEE Inf. Technol. Mechatronics Eng. Conf., ITOEC
Volume:2017-January
Part number:1 of 1
Issue title:Proceedings of 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference, ITOEC 2017
Issue date:November 27, 2017
Publication year:2017
Pages:304-308
Language:English
ISBN-13:9781509053629
Document type:Conference article (CA)
Conference name:3rd IEEE Information Technology and Mechatronics Engineering Conference, ITOEC 2017
Conference date:October 3, 2017 - October 5, 2017
Conference location:Chongqing, China
Conference code:133411
Sponsor:Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Global Union Academy of Science and Technology; IEEE Beijing Section
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:For the miniaturization of two-dimensional autocollimator, a method of using embedded measurement system instead of special host computer is presented. This system integrates CMOS image sensor's driving circuit, frame processing, adaptive exposure control, centroid subdivision and localization of cross, misalignment angle calculation, display driver and other functions within a FPGA chip, and the sampling image and measurement results are displayed through the TFTLCD mounted on the device body. The engineering prototype shows that the system has characters of high precision, high integration and high reliability. 2017 IEEE.
Number of references:6
Main heading:Adaptive control systems
Controlled terms:Display devices - Field programmable gate arrays (FPGA) - Miniature instruments - Precision engineering
Uncontrolled terms:Autocollimators - CMOS image sensor - Driving circuits - Embedded - High reliability - Measurement system - Miniaturization - Misalignment angles
Classification code:721.2 Logic Elements - 722.2 Computer Peripheral Equipment - 731.1 Control Systems
DOI:10.1109/ITOEC.2017.8122304

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<75>

Accession number:20171703607645
Title:Research on electromechanical resonance of two-axis tracking system
Authors:Zhao, Zhi-Ming (1); Xue, Ying-Jie (1); Zeng, Shu-Qin (1); Li, Zhi-Guo (2)
Author affiliation:(1) School of Mechanic and Electronic Engineering, Shaanxi University of Science and Technology, Xi'an; 710021, China; (2) Xi'an Institute of Optics and Precision Mechanics CAS, New Industrial Park, Xi'an Hi-Tech Industrial Development Zone, NO.17 Xinxi Road, Xi'an, Shaanxi, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102561V
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:The multi-axes synchronous system about the spatial two-axis turntable is the key equipment for semi-physical simulation and test in aerospace. In this paper, the whole structure design of the turntable is created by using Solidworks, then putting the three-dimensional solid model into ANSYS to build the finite element model. The software ANSYS is used to do the simulation about the static and dynamic analysis of two-axis turntable. Based on the modal analysis, we can forecast the inherent frequencies and the mode of vibration during the launch conditions which is very important to the design and safety of the structure. 2017 SPIE.
Number of references:6
Main heading:Finite element method
Controlled terms:Computer software - Modal analysis - Photonics - Tracking (position) - Vibration analysis
Uncontrolled terms:ANSYS - Electromechanical resonances - Inherent frequencies - Semi-physical simulations - Static and dynamic analysis - Synchronous system - Three-Dimensional Solid Modeling - Two-axis turntables
Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods
DOI:10.1117/12.2257210
Funding details: Number: 14JK1107, Acronym: -, Sponsor: -;Number: -, Acronym: SUST, Sponsor: Shahjalal University of Science and Technology;Number: 51305246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by the National Natural Science Foundation of China (No.51305246), Scientific Research Plan Projects of Shaanxi Education Department (No. 14JK1107) and the scientific research project of SUST (No.BJ13-07).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<76>

Accession number:20171503546583
Title:Flexible multifunction optical micro-manipulation technique based on PDMS chip
Authors:Liu, Kunshan (1); Xiao, Guangzong (1, 2); Chen, Xinlin (1); Hu, Shaomin (1); Luo, Hui (1)
Author affiliation:(1) College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) State Key Laboratory of Transient Optics and Photonic, Chinese Academy of Sciences, Xian; 710068, China
Corresponding author:Xiao, Guangzong
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10244
Part number:1 of 1
Issue title:International Conference on Optoelectronics and Microelectronics Technology and Application
Issue date:2017
Publication year:2017
Article number:1024421
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510609891
Document type:Conference article (CA)
Conference name:International Conference on Optoelectronics and Microelectronics Technology and Application 2016, OMTA 2016
Conference date:October 10, 2016 - October 12, 2016
Conference location:Shanghai, China
Conference code:127002
Sponsor:Chinese Academy of Engineering National; Chinese Society for Optical Engineering; Information and Electronic Engineering Faculty; National Natural Science Foundation of China
Publisher:SPIE
Abstract:Design a chip for flexible multifunction optical micro-manipulation based on elastomeric materials-PDMS. We realized the different motion types of microspheres, including stably capture, spiral motion and orbital rotation, by adjusting the input voltage of piezoceramics designed in PDMS Chip. Compared to conventional techniques, this PDMS chip based method does not require special optical properties of the microspheres to be manipulated. In addition, the technique was convenient and precise for dynamical adjustment of motion types without external influences. From these results, we verify that this multifunctional optical micro-manipulation technique of PDMS elastomeric materials can find potential applications for optical manipulation, including cost-effective on-chip diagnostics, optical sorting and optical binding, etc. 2017 SPIE.
Number of references:17
Main heading:Optical properties
Controlled terms:Cost effectiveness - Elastomers - Microchannels - Microelectronics - Micromanipulators - Microspheres - Optoelectronic devices - Piezoelectric ceramics
Uncontrolled terms:Conventional techniques - Elastomeric materials - External influences - On-chip diagnostics - Optical manipulation - Optical micromanipulation - Optical sorting - Orbital rotations
Classification code:708.1 Dielectric Materials - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 818.2 Elastomers - 911.2 Industrial Economics
DOI:10.1117/12.2261968
Funding details: Number: 61308058, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The project was supported by the National Natural Science Foundation of China (61308058).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<77>

Accession number:20175004522978
Title:Single shot, three-dimensional fluorescence microscopy with a spatially rotating point spread function
Authors:Wang, Zhaojun (1, 2); Cai, Yanan (1, 2); Liang, Yansheng (1, 2); Zhou, Xing (1, 2); Yan, Shaohui (1); Dan, Dan (1); Bianco, Piero R. (3); Lei, Ming (1); Yao, Baoli (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi’ an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’ an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) University at Buffalo, Department of Microbiology and Immunology, No. 12 Capen Hall, Buffalo; NY; 14214, United States
Source title:Biomedical Optics Express
Abbreviated source title:Biomed. Opt. Express
Volume:8
Issue:12
Issue date:December 1, 2017
Publication year:2017
Pages:5493-5506
Article number:#307480
Language:English
E-ISSN:21567085
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A wide-field fluorescence microscope with a double-helix point spread function (PSF) is constructed to obtain the specimen’s three-dimensional distribution with a single snapshot. Spiral-phase-based computer-generated holograms (CGHs) are adopted to make the depth-of-field of the microscope adjustable. The impact of system aberrations on the double-helix PSF at high numerical aperture is analyzed to reveal the necessity of the aberration correction. A modified cepstrum-based reconstruction scheme is promoted in accordance with properties of the new double-helix PSF. The extended depth-of-field images and the corresponding depth maps for both a simulated sample and a tilted section slice of bovine pulmonary artery endothelial (BPAE) cells are recovered, respectively, verifying that the depth-of-field is properly extended and the depth of the specimen can be estimated at a precision of 23.4nm. This three-dimensional fluorescence microscope with a framerate-rank time resolution is suitable for studying the fast developing process of thin and sparsely distributed micron-scale cells in extended depth-of-field. 2017 Optical Society of America.
Number of references:32
Main heading:Optical transfer function
Controlled terms:Endothelial cells - Fluorescence - Fluorescence microscopy - Microscopes
Uncontrolled terms:Aberration correction - Computer generated holograms - Developing process - Double-helix point-spread functions - Extended depth of field - High numerical apertures - Three-dimensional fluorescence microscopy - Three-dimensional fluorescences
Classification code:461.9 Biology - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.4 Quantum Theory; Quantum Mechanics
Numerical data indexing:Size 2.34e-08m
DOI:10.1364/BOE.8.005493
Funding details: Number: 11474352, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61377008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61522511, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: GM100156, Acronym: NIH, Sponsor: National Institutes of Health;
Funding text:This research was supported by the Natural Science Foundation of China (NSFC) (61522511, 81427802, 11474352, 61377008), the Natural Science Basic Research Plan in Shaanxi Province of China (Program No: 2016JZ020), and the National Institutes of Health Grant GM100156 to P. R. B.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<78>

Accession number:20172703873544
Title:Development of submicron high precision CFRP reflector
Authors:Xu, Liang (1); Xie, Yongjie (1); Ding, Jiaoteng (1); Wang, Yongjie (1); Ma, Zhen (1); Fan, Xuewu (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Xu, Liang(liangx@opt.ac.cn)
Source title:27th International Symposium on Space Terahertz Technology, ISSTT 2016
Abbreviated source title:Int. Symp. Space Terahertz Technol., ISSTT
Part number:1 of 1
Issue title:27th International Symposium on Space Terahertz Technology, ISSTT 2016
Issue date:2017
Publication year:2017
Language:English
Document type:Conference article (CA)
Conference name:27th International Symposium on Space Terahertz Technology, ISSTT 2016
Conference date:April 12, 2016 - April 15, 2016
Conference location:Nanjing, China
Conference code:127936
Sponsor:Oxford Instruments; Rohde and Schwarz; Sumitomo Heavy Industries
Publisher:International Symposium on Space Terahertz Technology
Abstract:Antenna gain affected by reflector surface figure accuracy and dimension stability directly, so one of the most important tasks is how to ensure the surface precision and dimensional stability. It is hard to control surface precision for springback of metal, so carbon fibre reinforced polymer (CFRP) usually be adopted to fabricate high precision reflector. With the rapid development of electronic technology, especially millimetre and terahertz wave technology, the precision of reflector needed increasingly. A Φ300mm CFRP flat reflector is developed for process study. In order to improve the thermal stability, a special "all CFRP" structure adopted. Optical replica process used to realize surface modification of CFRP reflector blank, final surface figure accuracy RMS reaching 0.1μm, and roughness Ra reaching 2nm. Further thermal stability tests show that the thermal stability reaching 13nm/C. AΦ500mm CFRP aspherical reflector also fabricated, and surface accuracy reaching 0.4μm. The study is of certain reference value for the development of CFRP reflector in millimetre wave and terahertz wave band.

Number of references:5
Main heading:Terahertz waves
Controlled terms:Antennas - Carbon fiber reinforced plastics - Carbon fibers - Fiber reinforced plastics - Millimeter waves - Reflection - Stability - Surface treatment - Thermodynamic stability
Uncontrolled terms:Carbon fibre reinforced polymer - Dimension stability - Electronic technologies - Millimetre waves - Reflector surfaces - Surface accuracy - Surface figure accuracies - Surface precision
Classification code:641.1 Thermodynamics - 711 Electromagnetic Waves - 804 Chemical Products Generally - 817.1 Polymer Products
Numerical data indexing:Size 1.00e-07m, Size 2.00e-09m, Size 4.00e-07m

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<79>

Accession number:20171603576231
Title:Optimization of the doughnut-shaped depletion spot in stimulated emission depletion microscopy
Authors:Cai, Yanan (1); Wang, Zhaojun (1); Liang, Yansheng (1); Yan, Shaohui (1); Dan, Dan (1); Yao, Baoli (1); Lei, Ming (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China
Corresponding author:Lei, Ming(leiming@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:37
Issue:3
Issue date:March 10, 2017
Publication year:2017
Article number:0318009
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Stimulated emission depletion microscopy (STED) is a powerful far-field technique for super-resolution optical imaging with a few tens even a few of nanometer spatial resolution, thus it is extensively used in investigation of cell biology and so on. The spatial resolution of STED highly depends on the intensity distribution of the doughnut-shaped depletion spot, near the objective focus. The polarization state of field has influence on focal intensity focused with high numerical aperture objective. The off-axis aberrations of microscopic system bring serious damage to the central symmetry of doughnut-shaped depletion spot. The influences of different polarization states of incidence vortex beam and aberrations of coma and astigmatism is of the optical system on the intensity profiles of doughnut-shaped depletion spot simulated by using the vectorial diffraction theory. In the experiment, the deformed depletion spot is optimized by utilizing a pure phase spatial light modulator to correct the aberrations of the optical system. A fluorescent nanoparticle is used as a probe to scan the focal region to obtain a high spatial resolution of intensity distribution. The measured results are in good agreement with those predicted by the vectorial diffraction theory. 2017, Chinese Lasers Press. All right reserved.
Number of references:33
Page count:9
Main heading:Aberrations
Controlled terms:Cytology - Diffraction - Diffraction gratings - Image resolution - Light modulation - Light modulators - Microscopic examination - Optical resolving power - Optical systems - Polarization - Stimulated emission
Uncontrolled terms:Fluorescent nanoparticles - High numerical aperture objective - Off-axis - Phase spatial light modulator - Spatial light modulators - Stimulated emission depletion microscopy - Super resolution - Vectorial diffraction theories
Classification code:461.2 Biological Materials and Tissue Engineering - 711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques
DOI:10.3788/AOS201737.0318009

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<80>

Accession number:20180404671142
Title:A Multispectral target tracking algorithm based on particle filter
Authors:Gao, Zhen-Zhen (1, 2); Zhang, Geng (1); Hu, Bing-Liang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104622K
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Target detection and tracking important in many applications including intelligent monitoring system, defense system and terminal guidance system. Aiming to solve the problem of simulated target tracking, this paper proposes an adaptive algorithm which uses the fusion of the spectral and morphological features of multispectral image to realize the target tracking based on the Particle Filter. Firstly, the target area is manually initialized in the multispectral image and the spectral and texture features of the target are extracted. Secondly, we build the adaptive tracking model of multiple features under the framework of Particle Filter. We validate the effectiveness of the proposed approach on the MATLAB platform. The results show that the proposed approach achieves accurate and stable multispectral target tracking in complex scenes by improving the efficiency of particles usage under defective tracking conditions, which is of great theoretical and practical values for the application of multispectral target tracking technology. 2017 SPIE.
Number of references:8
Main heading:Target tracking
Controlled terms:Adaptive algorithms - Adaptive optics - Bandpass filters - Clutter (information theory) - Monitoring - Monte Carlo methods
Uncontrolled terms:Feature extract - Multi-spectral - Particle filter - Spectral angles - Texture features
Classification code:703.2 Electric Filters - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 922.2 Mathematical Statistics
DOI:10.1117/12.2284791
Funding details: Number: -, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61405239, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11327303, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by the National Natural Science Foundation of China (No. 61501456, NO.11327303 and NO.61405239), International Science &Technology Cooperation Program of china and "Light of West China" Program of Chinese Academy of Science.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<81>

Accession number:20172903947104
Title:OpenMRE: A Numerical Platform for MRE Study
Authors:Li, Bing Nan (1); Shan, Xiang (2); Xiang, Kui (3); Kobayashi, Etsuko (4); Wang, Meng (5); Li, Xuelong (6)
Author affiliation:(1) Department of Biomedical Engineering, Hefei University of Technology, Hefei 230009, China.(e-mail: bingoon@ieee.org); (2) Department of Biomedical Engineering, Hefei University of Technology, Hefei 230009, China.; (3) School of Automation, Wuhan University of Technology, Wuhan 430070, China.; (4) Department of Precision Engineering, University of Tokyo, Tokyo 113-8656, Japan.; (5) School of Computer Science and Information Engineering, Hefei University of Technology, Hefei 230009, China.; (6) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China.
Source title:IEEE Transactions on Systems, Man, and Cybernetics: Systems
Abbreviated source title:IEEE Trans. Syst. Man Cybern. Syst.
Issue date:July 6, 2017
Publication year:2017
Language:English
ISSN:21682216
E-ISSN:21682232
Document type:Article in Press
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Magnetic resonance elastography (MRE) offers a noninvasive solution to visualize the mechanical properties of soft tissue, but the study suffers from expensive magnetic resonance scanning. Moreover, translating MRE wave images into soft tissue elasticity is a nontrivial issue for clinical professionals and healthcare practitioners. An interactive system--OpenMRE--is thus developed with the aid of ImageJ for numerical MRE study. It is comprised of two comparatively independent toolkits, namely MREA for simulation and MREP for interpretation. MREA mainly deals with the forward problem of MRE, and provides a numerical platform to determine the propagation and distribution of specially designed elastic wave. It is possible to numerically study some state-of-the-art paradigms including multisource and multifrequency MRE. The resultant wave images are interpretable in MREP that is designed for the inverse problem of MRE. It consists of the algorithms for phase unwrapping, directional filtering, and elasticity reconstruction. In a word, OpenMRE offers the MRE community a convenient and well-functioning system for interactive MRE study.
IEEE
Main heading:Inverse problems
Controlled terms:Bioinformatics - Biomechanics - Computer simulation - Elastic waves - Elasticity - Magnetic resonance imaging - Magnetism - Medical imaging - Numerical models - Resonance - Tissue - Wave propagation
Uncontrolled terms:Biological tissues - Directional filtering - Elasticity reconstruction - Elastography - Forward problem - Interactive system - Magnetic resonance elastography - Phase unwrapping
Classification code:461 Bioengineering and Biology - 701.2 Magnetism: Basic Concepts and Phenomena - 723.5 Computer Applications - 746 Imaging Techniques - 921 Mathematics - 931.1 Mechanics
DOI:10.1109/TSMC.2017.2717481

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<82>

Accession number:20173003967968
Title:Diagnostic Equipment Calibration Platform Based on Sub-Picosecond Ultraviolet Laser
Authors:Yuan, Zheng (1); Deng, Keli (1); Li, Jin (1); Yang, Zhiwen (1); Wu, Bingjing (2); Chen, Tao (1); Deng, Bo (1); Qi, Wenbo (2); Wang, Qiangqiang (1); Cao, Zhurong (1); Liu, Shenye (1)
Author affiliation:(1) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang; Sichuan; 621900, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:37
Issue:6
Issue date:June 10, 2017
Publication year:2017
Article number:0614002
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:In order to make full use of output characteristics of high energy, ultrashort pulse width of sub-picosecond ultraviolet lasers, a calibration platform of laser inertial confinement fusion(ICF) diagnostic equipment is established. The calibration platform has such functions as laser energy measurement, optical transmission delay, beam splitting and geometric decline, and sequential optical pulse generator, which can provide the structural support and high vacuum operating environment for the relevant diagnostic equipment. The mechanical and optical design is developed in all parts of the platform, and the platform is used to calibrate the X-ray diode response time, X-ray streak camera sweep speed, X-ray framing camera dynamic range and so on. The results show that the calibration platform matches the sub-picosecond ultraviolet calibration source well, and can achieve precise calibration of various diagnostic equipments. 2017, Chinese Lasers Press. All right reserved.
Number of references:11
Main heading:Ultraviolet lasers
Controlled terms:Calibration - High energy lasers - Inertial confinement fusion - Lasers - Light transmission - Optical design - X rays
Uncontrolled terms:Diagnostic equipment - Dynamic range - Operating environment - Output characteristics - Sub-picosecond - Sweep speed - X-ray framing camera - X-ray streak cameras
Classification code:741.1 Light/Optics - 744.1 Lasers, General - 932.1 High Energy Physics - 932.2.1 Fission and Fusion Reactions
DOI:10.3788/AOS201737.0614002

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<83>

Accession number:20171703607568
Title:Athermalization of infrared dual field optical system based on wavefront coding
Authors:Kai, Jiang (1); Bo, Jiang (1); Kai, Liu (1); Peipei, Yan (1); Jing, Duan (1); Qiusha, Shan (1)
Author affiliation:(1) Photoelectric Track and Measurement Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102563X
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:Wavefront coding is a technology which combination of the optical design and digital image processing. By inserting a phase mask closed to the pupil plane of the optical system, the wavefront of the system is re-modulated. And the depth of focus is extended consequently. In reality the idea is same as the athermalization theory of infrared optical system. In this paper, an uncooled infrared dual field optical system with effective focal as 38mm/19mm, F number as 1.2 of both focal length, operating wavelength varying from 8μm to 12μm was designed. A cubic phase mask was used at the pupil plane to re-modulate the wavefront. Then the performance of the infrared system was simulated with CODEV as the environment temperature varying from -40°C to 60°C. MTF curve of the optical system with phase mask are compared with the outcome before using phase mask. The result show that wavefront coding technology can make the system not sensitive to thermal defocus, and then realize the athermal design of the infrared optical system. 2017 SPIE.
Number of references:8
Main heading:Optical systems
Controlled terms:C (programming language) - Codes (symbols) - Image coding - Light polarization - Optical data processing - Optical design - Photonics - Wavefronts
Uncontrolled terms:Athernalization - Depth of focus - Environment temperature - Infrared optical systems - Infrared systems - Operating wavelength - Uncooled Infrared - Wave-front coding
Classification code:723.1.1 Computer Programming Languages - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems
Numerical data indexing:Size 8.00e-06m to 1.20e-05m, Temperature 2.33e+02K to 3.33e+02K
DOI:10.1117/12.2257873

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<84>

Accession number:20172403763410
Title:Visibility enhancement of hazy images using polarimetric dehazing method based on stokes parameters
Authors:Liang, Jian (1, 2); Zhang, Wenfei (1, 2); Ren, Liyong (1); Ju, Haijuan (1, 2); Bai, Zhaofeng (1); Qu, Enshi (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Ren, Liyong(renliy@opt.ac.cn)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F43-CLEO_AT 2017
Part number:1 of 1
Issue title:CLEO: Applications and Technology, CLEO_AT 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:CLEO: Applications and Technology, CLEO_AT 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:135878
Publisher:OSA - The Optical Society
Abstract:Polarimetric dehazing methods are proven very effective in enhancing the contrast and visibility of images captured in hazy weather. In this paper, we analyze the capability of visibility enhancement in experiments. 2017 OSA.
Number of references:6
Page count:2
Main heading:Image enhancement
Controlled terms:Demulsification - Polarimeters - Visibility
Uncontrolled terms:Dehazing - Stokes parameters
Classification code:741.2 Vision - 802.3 Chemical Operations - 941.3 Optical Instruments
DOI:10.1364/CLEO_AT.2017.AM4B.5

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<85>

Accession number:20173504090068
Title:Comparative analysis of direct torque control and DTC based on sliding mode control for PMSM drive
Authors:Meng, Lingnan (1, 2); Yang, Xiaojun (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100080, China
Source title:Proceedings of the 29th Chinese Control and Decision Conference, CCDC 2017
Abbreviated source title:Proc. Chin. Control Decis. Conf., CCDC
Part number:1 of 1
Issue title:Proceedings of the 29th Chinese Control and Decision Conference, CCDC 2017
Issue date:July 12, 2017
Publication year:2017
Pages:736-741
Article number:7978529
Language:English
ISBN-13:9781509046560
Document type:Conference article (CA)
Conference name:29th Chinese Control and Decision Conference, CCDC 2017
Conference date:May 28, 2017 - May 30, 2017
Conference location:Chongqing, China
Conference code:129162
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:This paper firstly introduces the mathematical equations of PMSM (permanent magnet synchronous motor), an overview of direct torque control (DTC) and a DTC based on sliding mode control for PMSM, and then builds PMSM control system simulation models with above two methods in MATLAB /Simulink environment. Finally, we got the starting response, torque ripple and load perturbation responses of DTC and SMC-DTC by comparison the simulation results of the two models. ? 2017 IEEE.
Number of references:10
DOI:10.1109/CCDC.2017.7978529

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<86>

Accession number:20172103691508
Title:Ranging method based on linear frequency modulated laser
Authors:Guo, Na (1, 2); Gao, Cunxiao (1); Xue, Mingyuan (1, 2); Niu, Linquan (1); Zhu, Shaolan (1); Feng, Li (1); He, Haodong (1); Cao, Zongying (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 101408, China
Corresponding author:Gao, Cunxiao(cxgao@opt.ac.cn)
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:27
Issue:6
Issue date:June 2017
Publication year:2017
Article number:065108
Language:English
ISSN:1054660X
E-ISSN:15556611
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:In this paper, we obtain target information about the distance between laser sources and targets based on the linear frequency modulated laser ranging system. We designed a specific experimental scheme for the ranging of linear frequency modulated semiconductor lasers based on heterodyne ranging experiment. Ranging precision can reach micron dimension and range resolution is about 0.002 m within the range of 1-40 m. The ranging method in this paper can apply to laser radars which could be used to capture target information, which is very helpful for tracking, identifying and extracting targets. 2017 Astro Ltd.
Number of references:18
Main heading:Frequency modulation
Controlled terms:Chirp modulation - Fiber lasers - Range finding - Semiconductor lasers
Uncontrolled terms:Experimental scheme - Laser sources - Linear frequency modulated - Linear modulations - Micron dimension - Range resolution - Ranging precision - Target information
Classification code:716 Telecommunication; Radar, Radio and Television - 744.4 Solid State Lasers - 744.4.1 Semiconductor Lasers
Numerical data indexing:Size 1.00e+00m to 4.00e+01m, Size 2.00e-03m
DOI:10.1088/1555-6611/aa6da3

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<87>

Accession number:20172403763268
Title:Multi-channel phase-sensitive amplification in nonlinear waveguides
Authors:Zhang, Y. (1); Reimer, C. (1); Wu, J. (1); Roztocki, P. (1); Wetzel, B. (1, 2); Little, B.E. (3); Chu, S.T. (4); Moss, D.J. (5); Kues, M. (1, 6); Morandotti, R. (1, 7)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9QH, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi'an, China; (4) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong; (5) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (6) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, India
Corresponding author:Zhang, Y.(yanbing.zhang@emt.inrs.ca)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F43-CLEO_AT 2017
Part number:1 of 1
Issue title:CLEO: Applications and Technology, CLEO_AT 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:CLEO: Applications and Technology, CLEO_AT 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:135878
Publisher:OSA - The Optical Society
Abstract:We demonstrate on-chip multi-channel phase-sensitive amplification in a nonlinear waveguide, achieving 5 dB net gain and 15 dB extinction ratio. We show the manipulation of individual channels in a multi-channel scheme through controlling the initial phases. 2017 OSA.
Number of references:11
Page count:2
Main heading:Waveguides
Uncontrolled terms:Extinction ratios - Initial phasis - Multi channel - Net gain - Nonlinear waveguides - On chips
Classification code:714.3 Waveguides
Numerical data indexing:Decibel 1.50e+01dB, Decibel 5.00e+00dB
DOI:10.1364/CLEO_AT.2017.JTh2A.91

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<88>

Accession number:20171703607530
Title:Synchronous acquisition method based on feature recognition of sequence images in online vision inspection
Authors:Xin, Jiang (1, 2); Hua, Li (2); Jie, Liu (1, 2)
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:1025630
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:In order to meet the requirements of synchronous image acquisition in online industrial vision inspection, a new method based on image feature recognition is proposed. According to the method, the spatial characteristic information of sequence images has been calculated, and an algorithm under multi-constrained conditions which based on the trend of feature values of sequence images is established. The synchronous target image in online inspection is acquired by the trigger signal which was obtained by the algorithm under the condition of no dependence on external attachment. The method does not need to rely on the external position feedback device, and reduces the hardware cost. The algorithm has a better synchronization precision and adaptability, and has been successfully applied in practice. 2017 SPIE.
Number of references:6
Main heading:Image acquisition
Controlled terms:Inspection - Photonics
Uncontrolled terms:Constrained conditions - Feature recognition - Position feedback device - Sequence images - Spatial characteristics - Synchronization precision - Synchronous acquisition - Vision inspection
Classification code:723 Computer Software, Data Handling and Applications - 741.1 Light/Optics
DOI:10.1117/12.2257657

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<89>

Accession number:5190322
Title:On-chip generation of high-dimensional entangled quantum states and their coherent control
Authors:Kues, Michael (1, 2); Reimer, Christian (1); Roztocki, Piotr (1); Cortés, Luis Romero (1); Sciara, Stefania (1, 3); Wetzel, Benjamin (1, 4); Zhang, Yanbing (1); Cino, Alfonso (3); Chu, Sai T. (5); Little, Brent E. (6); Moss, David J. (7); Caspani, Lucia (8, 9); Aza?a, José (1); Morandotti, Roberto (1, 10, 11)
Author affiliation:(1) Institut National de la Recherche Scientifique - Centre énergie, Matériaux et Télécommunications (INRS-EMT), 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Palermo, Italy; (4) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (5) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (6) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G1 1RD, United Kingdom; (9) Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh; EH14 4AS, United Kingdom; (10) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (11) National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia
Source title:Nature
Abbreviated source title:Nature
Volume:546
Issue:7660
Issue date:June 28, 2017
Publication year:2017
Pages:622-626
Language:English
ISSN:00280836
E-ISSN:14764687
CODEN:NATUAS
Document type:Journal article (JA)
Publisher:Nature Publishing Group, Houndmills, Basingstoke, Hampshire, RG21 6XS, United Kingdom
Abstract:Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science1. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics2, for increasing the sensitivity of quantum imaging schemes3, for improving the robustness and key rate of quantum communication protocols4, for enabling a richer variety of quantum simulations5, and for achieving more efficient and error-tolerant quantum computation6. Integrated photonics has recently become a leading platform for the compact, cost-efficient, and stable generation and processing of non-classical optical states7. However, so far, integrated entangled quantum sources have been limited to qubits (D = 2)8-11. Here we demonstrate on-chip generation of entangled qudit states, where the photons are created in a coherent superposition of multiple high-purity frequency modes. In particular, we confirm the realization of a quantum system with at least one hundred dimensions, formed by two entangled qudits with D = 10. Furthermore, using state-of-the-art, yet off-the-shelf telecommunications components, we introduce a coherent manipulation platform with which to control frequency-entangled states, capable of performing deterministic high-dimensional gate operations. We validate this platform by measuring Bell inequality violations and performing quantum state tomography. Our work enables the generation and processing of high-dimensional quantum states in a single spatial mode. 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
Number of references:45
Controlled terms:electronic equipment - imaging method - operations technology - physics - quantum mechanics - telecommunication - tomography
Classification code:901 Geobase: Related Topics
DOI:10.1038/nature22986
Funding details: Number: XDB24030300, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;
Funding text:This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) through the Steacie, Strategic, Discovery and Acceleration Grants Schemes, by the MESI PSRSIIRI Initiative in Quebec, by the Canada Research Chair Program and by the Australian Research Council Discovery Projects scheme (DP150104327). C.R. and P.R. acknowledge the support of NSERC Vanier Canada Graduate Scholarships. M.K. acknowledges funding from the European Union's Horizon 2020 Research and Innovation programme under the Marie Sklodowska- Curie grant agreement number 656607. S.T.C. acknowledges support from the CityU APRC programme number 9610356. B.E.L. acknowledges support from the Strategic Priority Research Program of the Chinese Academy of Sciences (grant number XDB24030300). B.W. acknowledges support from the People Programme (Marie Curie Actions) of the European Union's FP7 Programme under REA grant agreement INCIPIT (PIOF-GA-2013-625466). L.C. acknowledges support from the People Programme (Marie Curie Actions) of the European Union's FP7 Programme under REA Grant Agreement number 627478 (THREEPLE). R.M. acknowledges additional support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program (grant 074-U 01) and from the 1000 Talents Sichuan Program. We thank R. Helsten and M. Islam for technical insights; A. Tavares, T. Hansson and A. Bruhacs for discussions; T. A. Denidni and S. O. Tatu for lending us some of the required experimental equipment; P. Kung from QPS Photronics for help and the use of processing equipment; as well as Quantum Opus and N. Bertone of OptoElectronics Components for their support and for providing us with state-of-the-art photon detection equipment.

Database:GEOBASE
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<90>

Accession number:20181705046884
Title:Multispectral image compression algorithm based on spectral clustering and wavelet transform
Authors:Huang, Rong (1, 2); Qiao, Weidong (2); Yang, Jianfeng (2); Wang, Hong (1, 2); Xue, Bin (2); Tao, Jinyou (2)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710068, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10605
Part number:1 of 1
Issue title:LIDAR Imaging Detection and Target Recognition 2017
Issue date:2017
Publication year:2017
Article number:106051X
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510617063
Document type:Conference article (CA)
Conference name:LIDAR Imaging Detection and Target Recognition 2017
Conference date:July 23, 2017 - July 25, 2017
Conference location:Changchun, China
Conference code:133763
Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering (CSOE); National Natural Science Foundation of China
Publisher:SPIE
Abstract:In this paper, a method based on spectral clustering and the discrete wavelet transform (DWT) is proposed, which is based on the problem of the high degree of space-time redundancy in the current multispectral image compression algorithm. First, the spectral images are grouped by spectral clustering methods, and the clusters of similar heights are grouped together to remove the redundancy of the spectra. Then, wavelet transform and coding of the class representative are performed, and the space redundancy is eliminated, and the difference composition is applied to the Karhunen-Loeve transform (KLT) and wavelet transform. Experimental results show that with JPEG2000 and upon KLT + DWT algorithm, compared with the method has better peak signal-to-noise ratio and compression ratio, and it is suitable for compression of different spectral bands. 2017 SPIE.
Number of references:9
Main heading:Image compression
Controlled terms:Clustering algorithms - Compaction - Digital image storage - Discrete wavelet transforms - Image coding - Optical radar - Principal component analysis - Redundancy - Signal reconstruction - Signal to noise ratio - Spectroscopy - Wavelet transforms
Uncontrolled terms:DWT algorithms - Karhunen Loeve Transform (KLT) - Multispectral images - Multispectral-image compression - Peak signal to noise ratio - Spectral clustering - Spectral clustering methods - Spectral images
Classification code:716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment - 722.1 Data Storage, Equipment and Techniques - 903.1 Information Sources and Analysis - 921.3 Mathematical Transformations - 922.2 Mathematical Statistics
DOI:10.1117/12.2292014

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<91>

Accession number:20171403518577
Title:Study of imaging fiber bundle coupling technique in IR system
Authors:Chen, Guoqing (1, 2); Yang, Jianfeng (2); Yan, Xingtao (2); Song, Yansong (1, 2)
Author affiliation:(1) University of Chinese Academy of Sciences, China; (2) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10250
Part number:1 of 1
Issue title:International Conference on Optical and Photonics Engineering, icOPEN 2016
Issue date:2017
Publication year:2017
Article number:102500S
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510610019
Document type:Conference article (CA)
Conference name:International Conference on Optical and Photonics Engineering, icOPEN 2016
Conference date:September 26, 2016 - September 30, 2016
Conference location:Chengdu, China
Conference code:126841
Sponsor:International Association of Computer Science and Information Technology; Sichuan Institute of Electronics
Publisher:SPIE
Abstract:Due to its advantageous imaging characteristic and banding flexibility, imaging fiber bundle can be used for line-plane-switching push-broom infrared imaging. How to precisely couple the fiber bundle in the optics system is the key to get excellent image for transmission. After introducing the basic system composition and structural characteristics of the infrared systems coupled with imaging fiber bundle, this article analysis the coupling efficiency and the design requirements of its relay lenses with the angle of the numerical aperture selecting in the system and cold stop matching of the refrigerant infrared detector. For an actual need, one relay coupling system has been designed with the magnification is -0.6, field of objective height is 4mm, objective numerical aperture is 0.15, which has excellent image quality and enough coupling efficiency. In the end, the push broom imaging experiment is carried out. The results show that the design meets the requirements of light energy efficiency and image quality. This design has a certain reference value for the design of the infrared fiber optical system. 2017 COPYRIGHT SPIE.
Number of references:9
Main heading:Thermography (imaging)
Controlled terms:Energy efficiency - Fibers - Image quality - Light - Optical systems - Photonics
Uncontrolled terms:Cold stop - Imaging fiber bundle - Ir systems - Numerical aperture - Relay lens
Classification code:525.2 Energy Conservation - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.1 Photography
Numerical data indexing:Size 4.00e-03m
DOI:10.1117/12.2266955

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<92>

Accession number:20181705046990
Title:Electro-optical design of a long slit streak tube
Authors:Tian, Liping (1, 2, 3); Tian, Jinshou (1, 3); Wen, Wenlong (1); Chen, Ping (1); Wang, Xing (1); Hui, Dandan (1, 2); Wang, Junfeng (1)
Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10605
Part number:1 of 1
Issue title:LIDAR Imaging Detection and Target Recognition 2017
Issue date:2017
Publication year:2017
Article number:106050O
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510617063
Document type:Conference article (CA)
Conference name:LIDAR Imaging Detection and Target Recognition 2017
Conference date:July 23, 2017 - July 25, 2017
Conference location:Changchun, China
Conference code:133763
Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering (CSOE); National Natural Science Foundation of China
Publisher:SPIE
Abstract:A small size and long slit streak tube with high spatial resolution was designed and optimized. Curved photocathode and screen were adopted to increase the photocathode working area and spatial resolution. High physical temporal resolution obtained by using a slit accelerating electrode. Deflection sensitivity of the streak tube was improved by adopting two-folded deflection plates. The simulations indicate that the photocathode effective working area can reach 30mm × 5mm. The static spatial resolution is higher than 40lp/mm and 12lp/mm along scanning and slit directions respectively while the physical temporal resolution is higher than 60ps. The magnification is 0.75 and 0.77 in scanning and slit directions. And also, the deflection sensitivity is as high as 37mm/kV. The external dimension of the streak tube are only '.74mm×231mm. Thus, it can be applied to laser imaging radar system for large field of view and high range precision detection. 2017 SPIE.
Number of references:8
Main heading:Optical radar
Controlled terms:Image resolution - Optical design - Photocathodes - Radar systems - Streak cameras - Tubes (components)
Uncontrolled terms:Deflection sensitivities - High spatial resolution - Large field of views - Laser imaging - Slit streak tubes - Spatial resolution - Streak tubes - Temporal resolution
Classification code:619.1 Pipe, Piping and Pipelines - 716.2 Radar Systems and Equipment - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment
Numerical data indexing:Size 5.00e-03m, Time 6.00e-11s
DOI:10.1117/12.2295869

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<93>

Accession number:20173504083027
Title:Entanglement generation with integrated optical frequency comb sources
Authors:Reimer, Christian (1); Kues, Michael (1, 2); Roztocki, Piotr (1); Wetzel, Benjamin (1, 3); Bromberg, Yaron (4); Little, Brent E. (5); Chu, Sai T. (6); Moss, David J. (7); Caspani, Lucia (8); Morandotti, Roberto (1)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (4) Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem; 91904, Israel; (5) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (6) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G4 0NW, United Kingdom
Corresponding author:Morandotti, Roberto
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F54-NLO 2017
Part number:1 of 1
Issue title:Nonlinear Optics, NLO 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Nonlinear Optics, NLO 2017
Conference date:July 17, 2017 - July 21, 2017
Conference location:Waikoloa, HI, United states
Conference code:136898
Sponsor:AMERICAN ELEMENTS; KMLabs Inc; OSA
Publisher:OSA - The Optical Society
Abstract:We show that integrated optical frequency comb sources, based on on-chip microring resonators, can be used as versatile sources of two- and multi-photon entangled states when operated well below their optical parametric oscillation threshold. OSA 2017.
Number of references:15
Page count:2
Main heading:Nonlinear optics
Controlled terms:Natural frequencies - Optical materials - Quantum entanglement
Uncontrolled terms:Entanglement generation - Microring resonator - Multi-photon entangled state - On chips - Optical frequency comb sources - Optical parametric oscillations
Classification code:741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 931.4 Quantum Theory; Quantum Mechanics
DOI:10.1364/NLO.2017.NM1A.5

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<94>

Accession number:20180504692894
Title:Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting
Authors:Li, Kun (1); Zhao, Jian-Ke (1); Chen, Yong-Quan (1); Xue, Xun (1); Duan, Ya-Xuan (1); Cao, Kun (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China
Corresponding author:Li, Kun(wllk-19821118@163.com)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:12
Issue date:December 1, 2017
Publication year:2017
Pages:3187-3194
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:To evaluate quantitatively the image quality of a spot-detecting camera, a 2D anisotropic Gaussian fitting method was proposed. A spot-detecting camera was used to collect the infinity point target coming from a star simulator, and a certain area of energy distribution was obtained. Based on the correlation of the Gaussian energy distribution and the original distribution, this energy distribution was used in anisotropic Gaussian fitting to solve the parameters such as Gaussian radius and anisotropic factor. Then, the size of 80% of the energy was obtained by numerical integration. The experimental results show that the background threshold and anisotropic factor are optimized automatically and the influence of the noise on test results is reduced since the correlation is introduced. Moreover, the introduction of anisotropic factors, evaluation of pixel-phase error and the effect of optical system aberration on the imaging quality of the camera can be used as the testing condition criterion for defocused spots. The experimental results show that the repeatability of equivalent area circle diameter for the defocused spots is 0.15 pixel under the crisscross-shaped condition and that is 0.19 pixel under the farmland-shaped condition, respectively. The proposed method implements the defocused spot test by spot-detecting cameras, and also controls better imaging quality. 2017, Science Press. All right reserved.
Number of references:12
Main heading:Image quality
Controlled terms:Anisotropy - Cameras - Correlation methods - Gaussian distribution - Optical systems - Pixels - Quality control
Uncontrolled terms:Anisotropic factor - Background threshold - Energy distributions - Gaussian energy distribution - Gaussian fitting - Numerical integrations - Pixel phase - Testing conditions
Classification code:741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids
Numerical data indexing:Percentage 8.00e+01%
DOI:10.3788/OPE.20172512.3187

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<95>

Accession number:20163502755891
Title:A novel strategy to prepare 2D g-C3N4nanosheets and their photoelectrochemical properties
Authors:Miao, Hui (1, 2, 3); Zhang, Guowei (1); Hu, Xiaoyun (1, 3); Mu, Jianglong (1); Han, Tongxin (1); Fan, Jun (4); Zhu, Changjun (6); Song, Lixun (6); Bai, Jintao (1, 3); Hou, Xun (2, 3, 5)
Author affiliation:(1) School of Physics, Northwest University, Xi'an; 710069, China; (2) Institute of Photonics & Photon-Technology, Northwest University, Xi'an; 710069, China; (3) National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Northwest University, Xi'an; 710069, China; (4) School of Chemical Engineering, Northwest University, Xi'an; 710069, China; (5) State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics & Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710068, China; (6) School of Science, Xi'an Polytechnic University, Xi'an; 710048, China
Corresponding author:Hu, Xiaoyun(hxy3275@nwu.edu.cn)
Source title:Journal of Alloys and Compounds
Abbreviated source title:J Alloys Compd
Volume:690
Issue date:2017
Publication year:2017
Pages:669-676
Language:English
ISSN:09258388
CODEN:JALCEU
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:Herein, 2D g-C3N4nanosheets was successfully prepared by two processes: acid treatment and liquid exfoliation. The thickness of the nanosheets was nearly 4.545 nm containing ~13 C-N layers. The acid treatment process before liquid exfoliation for bulk g-C3N4could effectively destroy the in-plane periodicity of the aromatic systems and made the bulk easily exfoliated. This work carefully discussed the acid treatment effect for bulk by XRD patterns, nitrogen adsorption-desorption isotherm, FT-IR spectra, and UV–vis–NIR absorption spectra. Moreover, the nanosheets was fabricated and transferred onto FTO substrates by vacuum filtration self-assembled method to carefully investigate their optical, electrical, and photoelectrochemical properties. The thin film filtrated by 2 ml g-C3N4nanosheets supernatant showed the best photocurrent response nearly 0.5 μA/cm2and the lowest resistance of charge transfer (Rct) at the interface between FTO and electrolyte. The photocurrent response could be further effectively improved from nearly 0.5 to 1.8 μA/cm2by the integration of CNTs to promote charge separation and transfer. Thus, the easy, safe, and indirect synthesis of 2D g-C3N4-based nanosheets thin films opens new possibilities for the fabrication of many energy-related devices. 2016 Elsevier B.V.
Number of references:24
Main heading:Thin films
Controlled terms:Charge transfer - Electrochemistry - Electrolytes - Gas adsorption - Interfaces (materials) - Nanosheets
Uncontrolled terms:Charge separations - g-C3N4 - Indirect synthesis - Liquid exfoliations - Nitrogen adsorption desorption isotherms - Photocurrent response - Photoelectrochemical properties - Photoelectrochemicals
Classification code:702 Electric Batteries and Fuel Cells - 761 Nanotechnology - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics - 951 Materials Science
DOI:10.1016/j.jallcom.2016.08.184
Funding details: Number: 20136101110009, Acronym: -, Sponsor: -;Number: 21476183, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 51372201, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work has been supported by the National Natural Science Foundation of China (Grant No. 21476183 , 51372201 ), and the Research Fund for the Doctoral Program of Higher Education (Grant No. 20136101110009 ).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<96>

Accession number:20175104545957
Title:Analysis of partial crystallization in Yb3+doped aluminophosphosilicate fiber preforms prepared with organic chelate precursor doping technique
Authors:Luo, Rong (1, 2); Li, Weinan (1); Hou, Chaoqi (1); Wang, Pengfei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi’an; 710119, China; (2) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China
Source title:ECS Journal of Solid State Science and Technology
Abbreviated source title:ECS J. Solid State Sci. Technol.
Volume:6
Issue:4
Issue date:2017
Publication year:2017
Pages:P138-P143
Language:English
ISSN:21628769
E-ISSN:21628777
Document type:Journal article (JA)
Publisher:Electrochemical Society Inc.
Abstract:Yb3+doped aluminophosphosilicate fiber preforms have been prepared by modified chemical vapor deposition (MCVD) with organic chelate precursor doping technique (OCD). It was found that the flow ratio of Yb(thd)3/POCl3had an important influence on partial crystallization in the preform cores. The wholly transparent core was obtained when the flow ratio of Yb(thd)3/POCl3ranged in 0.71:1–0.82:1. Crystallization occurred during etching process when the Yb(thd)3/POCl3flow ratio was over 0.83:1, corresponding to a doping ratio of Yb2O3/P2O5larger than 1.01:1, as characterized by electron probe microanalysis (EPMA). X-ray photoelectric spectroscopy (XPS) analysis indicated exsistence of P in the quasi-metaphosphate [PO4] bond structures in the crystallized area. Raman spectra displayed characteristic peaks of silica glasses except 1330 cm?1Raman peaks, which can be assigned to P=O bond due to the presence of quasi-metaphosphate [PO4] units. When the content ratio of Yb2O3/P2O5exceeded 1.01:1, Al was depleted and P was enriched, and the Yb3+ions was mainly connected with the quasi-metaphosphate [PO4] units, which weakened the role of P and Al preventing Yb3+ions clustering. As a result, crystallization occurred. And this schematic glass structural model was proposed for the partially crystallized preform core. 2017 The Electrochemical Society. All rights reserved.
Number of references:30
Main heading:Aluminum
Controlled terms:Chelation - Chemical vapor deposition - Electron probe microanalysis - Glass - Photoelectricity - Preforming - Silica
Uncontrolled terms:Characteristic peaks - Chelate precursor - Doping techniques - Etching process - Modified chemical vapor depositions - Partial crystallization - Structural modeling - X-ray photoelectric spectroscopy
Classification code:541.1 Aluminum - 701.1 Electricity: Basic Concepts and Phenomena - 801 Chemistry - 802.2 Chemical Reactions - 812.3 Glass
DOI:10.1149/2.0151704jss
Funding details: Number: 2015JM6315, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61675229, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61138007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors acknowledge the following projects financially supported by the National Natural Science Foundation of China (grant No. 61138007, No.61307046 and No. 61675229), Natural Science Basic Research Project in Shaanxi Province (2015JM6315) and West Young Scholars Program of the Chinese Academy of Sciences.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<97>

Accession number:20171703607610
Title:Modal analysis of collimation frame fabricated by titanium alloy
Authors:Zhang, Yongqiang (1, 2); Liu, Zhaohui (2); Li, Zhiguo (2)
Author affiliation:(1) University of Chinese, Academy of Sciences, China; (2) Xi'An Institute of Optics and Precision Mechanics CAS, GaoXin qu, XinXi road 17, Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102560C
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:Collimation frame is the key supporting component of Space two-dimensional turntable. Its stiffness characteristics are vital for the performance of turntable. In order to reduce weight and improve rigidity, a lightweight collimation frame is designed. Compared with some commonly used aerospace materials, titanium alloy is chosen as the material of collimation frame for its excellent advantages. Modal analysis of the collimation frame is realized by using finite element analysis software MSC. Patran/Nastran to verify whether the stiffness of frame meet the design requirements. The results of analysis show that the first natural frequency of collimation frame is 169.5Hz, which satisfies the design requirement of stiffness. Then, modal experiment is conducted to verify the correctness of the results obtained from finite element modal analysis. The results of experiment show that simulation and experiment results agree well, which further confirm the correctness of the finite element modal analysis. Therefore, it proves that the selection of material and the design of structure are feasible. 2017 SPIE.
Number of references:12
Main heading:Modal analysis
Controlled terms:Finite element method - Photonics - Stiffness - Titanium alloys
Uncontrolled terms:Collimation frame - Finite element analysis software - Finite element modal analysis - Material stiffness - Model analysis - Selection of materials - Stiffness characteristics - Two-dimensional turntables
Classification code:542.3 Titanium and Alloys - 741.1 Light/Optics - 921 Mathematics - 921.6 Numerical Methods - 951 Materials Science
Numerical data indexing:Frequency 1.70e+02Hz
DOI:10.1117/12.2268787

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<98>

Accession number:20170803379718
Title:Ground-based optical detection of low-dynamic vehicles in near-space
Authors:Jing, Nan (1, 2); Li, Chuang (1); Zhong, Peifeng (1, 2)
Author affiliation:(1) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China
Corresponding author:Li, Chuang(lichuang@opt.ac.cn)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:1
Issue date:January 1, 2017
Publication year:2017
Article number:014107
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:Ground-based optical detection of low-dynamic vehicles in near-space is analyzed to detect, identify, and track high-altitude balloons and airships. The spectral irradiance of a representative vehicle on the entrance pupil plane of ground-based optoelectronic equipment was obtained by analyzing the influence of its geometry, surface material characteristics, infrared self-radiation, and the reflected background radiation. Spectral radiation characteristics of the target in both clear weather and complex meteorological weather were simulated. The simulation results show the potential feasibility of using visible-near-infrared (VNIR) equipment to detect objects in clear weather and long-wave infrared (LWIR) equipment to detect objects in complex meteorological weather. A ground-based VNIR and LWIR optoelectronic experimental setup is built to detect low-dynamic vehicles in different weather. A series of experiments in different weather are carried out. The experiment results validate the correctness of the simulation results. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:42
Main heading:Distribution functions
Controlled terms:Atmospheric spectra - Infrared devices - Infrared radiation - Meteorological balloons - Object detection - Reflection - Space optics - Vehicles
Uncontrolled terms:Background radiation - Bi-directional scattering distribution functions - Bidirectional reflectance distribution functions - High-altitude balloons - Spectral irradiance - Spectral radiation characteristic - Transmittance distribution - Visible near-infrared
Classification code:443.2 Meteorological Instrumentation - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 922.1 Probability Theory
DOI:10.1117/1.OE.56.1.014107

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<99>

Accession number:20171203489690
Title:Effect of iodine (I2) on structural, thermal and optical properties of Ge-Sb-S chalcohalide host glasses and ones doped with Dy
Authors:Guo, Quan (1, 2); Xu, Yantao (1, 2); Guo, Haitao (1, 3); Xiao, Xusheng (1); Lin, Changgui (4); Cui, Xiaoxia (1); Wang, Pengfei (1); Gao, Fei (1); Lu, Min (1); Peng, Bo (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and precision Mechanics, Chinese Academy of Science (CAS), Xi'an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China; (3) State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou; 510640, China; (4) Laboratory of Infrared Materials and Devices, The Research of Institution of Advanced Technologies of Ningbo University, Ningbo; Zhejiang; 315211, China
Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)
Source title:Journal of Non-Crystalline Solids
Abbreviated source title:J Non Cryst Solids
Volume:464
Issue date:May 15, 2017
Publication year:2017
Pages:81-88
Language:English
ISSN:00223093
CODEN:JNCSBJ
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:A serial (100 ? x)Ge25Sb10S65-xI (x = 0, 5, 10, 15, 20, 25 and 30 wt%) chalcohalide glasses and ones doped with 0.1 wt% Dy3 +rare-earth ions were synthesized and their structural, thermal and optical properties were systematically studied. It indicates that addition of I2into Ge25Sb10S65glass significantly decreases the connectivity of glass network and average bond energy, and modifies the associated properties. The glass transition temperature and refractive index decrease monotonically, and the density increases almost linearly with the increasing of iodine content in glass. The thermal stability is improved, which has a maximum of ΔTmax = 174 °C. While the optical bandgap has a peak value at x = 10 wt%. The absorption spectra and mid-infrared fluorescence spectra of Dy3 +rare-earth ions doped glasses were investigated together with the Judd-Ofelt analysis. GeS2nano-crystals were found in the sample with x ≥ 15 wt%, which is supposed to induce enhancements of mid-infrared fluorescence at 2.95 and 4.32 μm. 2017 Elsevier B.V.
Number of references:59
Main heading:Sulfur compounds
Controlled terms:Antimony compounds - Fluorescence - Germanium compounds - Glass - Glass transition - Infrared devices - Iodine - Iodine compounds - Metal ions - Optical properties - Rare earths - Refractive index - Structure (composition) - Thermodynamic properties
Uncontrolled terms:Bond energies - Chalcohalide glass - Doped glass - Glass network - Judd-ofelt analysis - Midinfrared - Peak values - Rare earth ions
Classification code:531.1 Metallurgy - 641.1 Thermodynamics - 741.1 Light/Optics - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.3 Glass - 951 Materials Science
DOI:10.1016/j.jnoncrysol.2017.03.024
Funding details: Number: 2015JQ5141, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2015-skllmd-05, Acronym: SCUT, Sponsor: South China University of Technology;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61475189, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61405241, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was financially supported by the West Light Foundation from Chinese Academy of Sciences (CAS) of China, the National Natural Science Foundation of China (61475189 and 61405241) and the Natural Science Basic Research Project in Shaanxi Province (2015JQ5141). The work was also funded by the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology) (2015-skllmd-05).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<100>

Accession number:20171803628642
Title:Nonlinear optical response and applications of tin disulfide in the near- and mid-infrared
Authors:Yang, H.R. (1, 2); Liu, X.M. (1, 2, 3)
Author affiliation:(1) State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou; 310027, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan; 411201, China
Corresponding author:Liu, X.M.(liuxueming72@yahoo.com)
Source title:Applied Physics Letters
Abbreviated source title:Appl Phys Lett
Volume:110
Issue:17
Issue date:April 24, 2017
Publication year:2017
Article number:171106
Language:English
ISSN:00036951
CODEN:APPLAB
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:Layered metal dichalcogenides (LMDs) have received considerable attention in optoelectronics and photonics. Tin disulfide (SnS2) as a member of the LMDs has been employed for transistors, energy storage, and photocatalysts. The optical properties of SnS2in the ultraviolet and visible regions have been widely investigated, while the applications of SnS2in the near- and mid-infrared regions are still rare. Here, we demonstrate the nonlinear optical response of layered SnS2that is exploited as a saturable absorber in the near- and mid-infrared regions. The saturable absorption of SnS2is measured at 1.06 and 1.55 μm, which illustrates a low saturable intensity. SnS2covered on a D-shaped fiber is used to initiate the mode-locking operations in erbium-, ytterbium-, and thulium-doped fiber lasers and ultrafast pulses are achieved at 1.03, 1.56, and 1.91 μm. These results make SnS2an appealing candidate for broadband applications across the near- and mid-infrared regions. 2017 Author(s).
Number of references:59
Main heading:Tin compounds
Controlled terms:Fiber lasers - Infrared devices - IV-VI semiconductors - Locks (fasteners) - Nonlinear optics - Optical properties - Saturable absorbers - Semiconducting tin compounds - Semiconductor quantum wells - Sulfur compounds
Uncontrolled terms:Broadband applications - D-shaped fiber - Dichalcogenides - Mid-infrared regions - Nonlinear optical response - Saturable absorption - Thulium-doped fibers - Ultrafast pulse
Classification code:712.1.2 Compound Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 744.1 Lasers, General - 744.4 Solid State Lasers
Numerical data indexing:Size 1.06e-06m, Size 1.55e-06m, Size 1.91e-06m
DOI:10.1063/1.4982624
Funding details: Number: 2015KCT-06, Acronym: -, Sponsor: -;Number: 61525505, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant Agreement No. 61525505, and by the Key Scientific and Technological Innovation Team Project in Shaanxi Province (2015KCT-06).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<101>

Accession number:20171103436800
Title:Electromechanical coupling characteristics of optical-electric theodolite
Authors:Zhang, Jing (1); Hao, Wei (1); Yang, Xiao-Xu (1); Jing, Feng (1); Huang, Wei (1); Qiu, Peng (1); Cao, Bei (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences (CAS), Xi'an; 710119, China
Corresponding author:Cao, Bei(candy@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:1
Issue date:January 1, 2017
Publication year:2017
Article number:0112005
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Combing the structure dynamic design method with the control theory, the flexible electromechanical coupling control model was built which is difference from the traditional rigid control model. The relationship between the structural fundamental frequency and servo bandwidth was analyzed, then the dynamic quantitative design principles were put-forward, The experiment results show that, the theodolite structure frequency should be far away from the resonant frequency of the system, and meet ωn≥3ωrat least, which is effective and feasible, has solved the high precision large theodolite electromechanical resonance problem, and provide the basis of engineering for designing fast response and high tracking precision of photoelectric theodolite. 2017, Science Press. All right reserved.
Number of references:10
Page count:7
Main heading:Structural design
Controlled terms:Bandwidth - Dynamic analysis - Electromechanical coupling - Natural frequencies - Photoelectricity - Precision engineering - Professional aspects
Uncontrolled terms:Damping ratio - Electro-optical - Gain - Servo bandwidth - Structural frequencies
Classification code:408.1 Structural Design, General - 701.1 Electricity: Basic Concepts and Phenomena - 716.1 Information Theory and Signal Processing - 901.1 Engineering Professional Aspects
DOI:10.3788/gzxb20174601.0112005
Funding details: Number: 61505248, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The Natural Science Foundation of China(No.61505248).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<102>

Accession number:20173003979034
Title:Development of 808 nm Quasi-Continuous Wave Laser Diode Bar with 600 W Output Power
Authors:Wang, Zhenfu (1); Li, Te (1); Yang, Guowen (1, 2); Song, Yunfei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) Xi'an Lumcore Optoelectronics Technologies Co., Ltd., Xi'an; Shaanxi; 710077, China
Corresponding author:Yang, Guowen(yangguowen@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:44
Issue:6
Issue date:June 10, 2017
Publication year:2017
Article number:0601004
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Design of 808 nm epitaxial layer structure is demonstrated, and a very low internal loss less than 0.5 cm-1is achieved. The quasi-continuous wave (QCW) high peak power 808 nm laser bar is fabricated with this high efficiency wafer. The bar with a filled factor of 85%, emitter number of 60, emitting width of 140 μm, and cavity length of 2 mm is measured at QCW mode. The peak power is 613 W with a slope efficiency of 1.34 W/A (drive current of 500 A, pulse width of 200 μs, repetition frequency of 400 Hz, duty ratio of 8%). The peak wavelength is about 807.46 nm with a spectral half-width full-maximum of 2.88 nm. The lifetime test is also demonstrated at QCW 300 W (8% duty ratio), the lifetime of five bars is all above 3.63×109shot, the current fluctuation is lower than 10% at the constant power of 300 W, which satisfies commercial application requirement. 2017, Chinese Lasers Press. All right reserved.
Number of references:15
Main heading:Continuous wave lasers
Controlled terms:Efficiency - Laser optics - Optical losses
Uncontrolled terms:Commercial applications - Current fluctuations - Epitaxial layer structures - Lifetime - Peak power - Quasi-continuous waves - Repetition frequency - Slope efficiencies
Classification code:741 Light, Optics and Optical Devices - 744.1 Lasers, General - 913.1 Production Engineering
Numerical data indexing:Electric_Current 5.00e+02A, Frequency 4.00e+02Hz, Percentage 1.00e+01%, Percentage 8.00e+00%, Percentage 8.50e+01%, Power 3.00e+02W, Power 6.00e+02W, Power 6.13e+02W, Size 1.40e-04m, Size 2.00e-03m, Size 2.88e-09m, Size 8.07e-07m, Size 8.08e-07m, Time 2.00e-04s
DOI:10.3788/CJL201744.0601004

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<103>

Accession number:20171703607490
Title:The influence of temperature and pressure on primary mirror surface figure and image quality of the 1.2m colorful schlieren system
Authors:Xu, Songbo (1); Wang, Peng (1); Chen, Lei (2); Wang, Jing (1); Xie, Yong-Jun (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710072, China; (2) China Aerodynamics Research and Development Center, Mianyang; 621000, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102565D
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:In this paper, a colorful schlieren system without any protecting windows was introduced which results in that the 1.2m primary mirror would directly be confronted with the pressure and temperature variation from the wind tunnel test. To achieve a good schlieren image under the wind tunnel test working condition of a wide temperature fluctuation range (-10°C to 50°C) as well as a pressure (2kPa), a new flexible support method of the primary mirror was strategically designed. A finite element model of the primary mirror combined with its supporting structures was built up to approach the surface figure of the primary mirror under the complex working conditions as gravity, temperature variation, and pressure. The schlieren images due to the change of the primary mirror surface figure were simulated by Light-tools software. It was found that the temperature changing and pressure would lead to the variation of the surface figure of the primary mirror surface figure and therefore, results in the changing of the quality of simulated schlieren images. 2017 SPIE.
Number of references:9
Main heading:Optical testing
Controlled terms:Finite element method - Mirrors - Photonics - Schlieren systems - Structures (built objects) - Temperature distribution - Wind stress - Wind tunnels
Uncontrolled terms:Pressure and temperature - Primary mirrors - Supporting structure - Surface figure - Temperature and pressures - Temperature changing - Temperature fluctuation - Temperature variation
Classification code:443.1 Atmospheric Properties - 641.1 Thermodynamics - 651.2 Wind Tunnels - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 921.6 Numerical Methods
Numerical data indexing:Pressure 2.00e+03Pa, Size 1.20e+00m, Temperature 2.63e+02K to 3.23e+02K
DOI:10.1117/12.2247935

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<104>

Accession number:20174804480176
Title:Superfluidicity in an optical lattice with a PT symmetric defect
Authors:Zhang, Lingxuan (1, 2, 3); Zhang, Wenfu (3); Ge, Li (1, 2)
Author affiliation:(1) College of Staten Island, CUNY, NY, United States; (2) Graduate School, CUNY, NY, United States; (3) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, Shaanxi, China
Corresponding author:Ge, Li(li.ge@csi.cuny.edu)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F66-FiO 2017
Part number:1 of 1
Issue title:Frontiers in Optics, FiO 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Frontiers in Optics, FiO 2017
Conference date:September 18, 2017 - September 21, 2017
Conference location:Washington, DC, United states
Conference code:137738
Publisher:OSA - The Optical Society
Abstract:We consider a nonlinear waveguide array with a PT symmetric defect at the center of a parabolic potential. The oscillations of a coherent state persist without dissipation, if its velocity is below a critical value. OSA 2017.
Number of references:4
Page count:2
Main heading:Optical lattices
Controlled terms:Defects - Waveguides
Uncontrolled terms:Coherent state - Critical value - Nonlinear waveguide arrays - Parabolic potential
Classification code:714.3 Waveguides - 744.8 Laser Beam Interactions - 951 Materials Science
DOI:10.1364/FIO.2017.JTu3A.89

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<105>

Accession number:20175004524946
Title:N-vector inertial navigation mechanization algorithm for transpolar aircraft
Authors:Zhang, Guang-Dong (1); Yan, Gong-Min (2); Weng, Jun (2); Yang, Hong-Tao (1)
Author affiliation:(1) Xi'an Institute of Optics And Precision Mechanics Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Automation, Northwestern Polytechnical University, Xi'an; 710129, China
Source title:Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology
Abbreviated source title:Zhongguo Guanxing Jishu Xuebao
Volume:25
Issue:5
Issue date:October 1, 2017
Publication year:2017
Pages:606-610 and 617
Language:Chinese
ISSN:10056734
Document type:Journal article (JA)
Publisher:Editorial Department of Journal of Chinese Inertial Technology
Abstract:The classical mechanization working could not confirm its position and heading in the circumpolar latitude area. For overcoming this problem, the normal vector inertial navigation basing on earth-fixed frame is presented. This approach uses a normal vector instead of latitude/longitude to finish updating of position. It could achieve navigation requirement world-wide. The n-vector mechanization error equations are derived, which can be used in the design of integrated navigation systems. The simulation could test and verify the error characteristics of n-vector mechanization. The n-vector mechanization offers the solution to transpolar aircraft. The reason of the navigation error saltation near the pole area is explained. 2017, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.
Number of references:11
Main heading:Air navigation
Controlled terms:Errors - Inertial navigation systems - Machinery - Mechanization - Navigation - Vectors
Uncontrolled terms:Earth-fixed frames - Error characteristics - Error equation - Inertial navigations - Integrated navigation systems - Navigation error - Normal vector - Test and verify
Classification code:431.5 Air Navigation and Traffic Control - 601 Mechanical Design - 921.1 Algebra
DOI:10.13695/j.cnki.12-1222/o3.2017.05.009

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<106>

Accession number:20174404315730
Title:Effects of doping SiO2on the defect's change in B2O3-containing phosphate based laser glasses used for high energy UV lasers
Authors:Sun, Mengya (1, 2); Duan, Zhanjun (3); Wang, Pengfei (1); Lu, Min (1); Peng, Bo (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (2) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China; (3) Department of Systems Engineering, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China
Corresponding author:Wang, Pengfei(pfwang@opt.ac.cn)
Source title:Optical Materials Express
Abbreviated source title:Opt. Mater. Express
Volume:7
Issue:11
Issue date:2017
Publication year:2017
Article number:307525
Language:English
E-ISSN:21593930
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:The introduction of SiO2affects the glass's micro-structure and micro-defects as well as the corresponding optical and physical properties of the B2O3-containing multicomponent phosphate glasses. The addition of SiO2increases the transition temperature and causes shifts of the UV cut-offwavelength (λcut-off). The changes of λcut-offare closely related to the PO3-EC and PO4-EC defect centers that are associated with the Q2tetrahedral in phosphate chains. The corresponding variations of Q2units can also be found in the Raman, XPS, and31P MAS-NMR spectra. With increasing the content of SiO2, the ratio of nonbridging oxygen (associated with Q2units) is gradually decreased down to a critical level when SiO2/B2O3ratio is 4/1.5, whereas the ratio of non-bridging oxygen increases when SiO2/B2O3ratio is larger than 4/1.5, which suggests that the doping SiO2can influence the concentration of PO3-EC and PO4-EC defects. Those results can be better obtained when the sample is exposed to gamma irradiation. As the SiO2content increased gradually up to 4/1.5, the concentration of the PO3-EC defects declined, while the concentration of PO4-EC and the POHC defects increased when considering the irradiation dose, indicating that the addition of SiO2can regulate the structure-related defects in phosphate based glasses. 2017 Optical Society of America.
Number of references:22
Main heading:Silica
Controlled terms:Defects - Glass - High energy lasers - Irradiation - Nuclear magnetic resonance spectroscopy - Oxygen
Uncontrolled terms:Gamma irradiation - Irradiation dose - Multicomponents - Non-bridging oxygen - Phosphate based glass - Phosphate chain - Phosphate glass - Structure-related
Classification code:744.1 Lasers, General - 804 Chemical Products Generally - 812.3 Glass - 951 Materials Science
DOI:10.1364/OME.7.004111
Funding details: Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61775235, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC No. 61775235, 61307046); Natural Science Basic Research Project in Shaanxi Province (2015JM6315); West Young Scholars Program of the Chinese Academy of Sciences (XAB2016A08); and Youth Innovation Promotion Association CAS (2017446), China.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<107>

Accession number:20180404671116
Title:Design of imaging circuitry of space CCD camera based on FPGA
Authors:Liu, Meiying (1, 2); Wen, Desheng (1); Wang, Hu (1); Liu, Yang (1); Zhao, Hui (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No. 17 Xinxi Road, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences 19 a Yuquan Rd, Shijingshan District, Beijing; 100049, China
Corresponding author:Liu, Meiying(liumeiying@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104621M
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:A imaging system of area-Array CCD cameras based on FPGA was designed. The overall structure and design of the system was introduced in detail. According to the working mode and driving timing requirements of this CCD image sensor, the driving schedule under the control of FPGA was designed. The working mode and parameters of such an imaging system were aligned with the control signals in accordance with the general requirements of space CCD cameras. With FPGA device as the platform of hardware design, the hardware of integrated timing and control system was described in VHDL language. The A/D converter AD9945 based on the correlated double sampling was used to realize the analog-digital (A/D) conversion of ICX285AL output signals. The XQR2V3000-4CG717V developed by Xilinx was chosen to accomplish the design of this hardware circuit. Through simulation, the correctness of driving schedule was verified, thus preparing necessary hardware for the final development of space area-Array CCD cameras with high performance. 2017 SPIE.
Number of references:9
Main heading:CCD cameras
Controlled terms:Analog to digital conversion - Computer hardware description languages - Field programmable gate arrays (FPGA) - Hardware - Imaging systems - Integrated circuit design - Timing circuits
Uncontrolled terms:CCD image sensors - Correlated double sampling - Driving circuits - Hardware circuits - Hardware design - Space arrays - Space CCD cameras - Timing requirements
Classification code:605 Small Tools and Hardware - 713.4 Pulse Circuits - 714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 723.1.1 Computer Programming Languages - 746 Imaging Techniques
DOI:10.1117/12.2284098
Funding details: Number: 61105017, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work has been supported by: National Natural Science Foundation of China under the contract No.61105017.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<108>

Accession number:20175104558227
Title:Demonstration of a mid-infrared NO molecular Faraday optical filter
Authors:Wu, Kuijun (1); Feng, Yutao (2); Li, Juan (2); Yu, Guangbao (1); Liu, Linmei (1); Xiong, Yuanhui (1); Li, Faquan (1)
Author affiliation:(1) State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan National Laboratory for Optoelectronics, Wuhan; 430071, China; (2) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China
Corresponding author:Li, Faquan(lifaquan@wipm.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:25
Issue date:December 11, 2017
Publication year:2017
Pages:30916-30930
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A molecular Faraday optical filter (MFOF) working in the mid-infrared region is realized for the first time. NO molecule was used as the working material of the MFOF for potential applications in atmospheric remote sensing and combustion diagnosis. We develop a complete theory to describe the performance of MFOF by taking both Zeeman absorption and Faraday rotation into account. We also record the Faraday rotation transmission (FRT) signal using a quantum cascade laser over the range of 1,820 cm?1to 1,922 cm?1and calibrate it by using a 101.6 mm long solid germanium etalon with a free spectral range of 0.012 cm?1. Good agreement between the simulation results and experimental data is achieved. The NO-MFOF’s transmission characteristics as a function of magnetic field and pressure are studied in detail. Both Comb-like FRT spectrum and single branch transmission spectrum are obtained by changing the magnetic field. The diversity of FRT spectrum expands the range of potential applications in infrared optical remote sensing. This filtering method can also be extended to the lines of other paramagnetic molecules. 2017 Optical Society of America.
Number of references:39
Main heading:Remote sensing
Controlled terms:Bandpass filters - Infrared devices - Magnetic fields - Molecules - Optical filters - Quantum cascade lasers
Uncontrolled terms:Atmospheric remote sensing - Combustion diagnosis - Free spectral range - Mid-infrared regions - Optical remote sensing - Paramagnetic molecules - Transmission characteristics - Transmission spectrums
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 703.2 Electric Filters - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics
Numerical data indexing:Size 1.02e-01m
DOI:10.1364/OE.25.030916
Funding details: Number: -, Acronym: AXA, Sponsor: AXA Research Fund;Number: 2017YFC0211900, Acronym: -, Sponsor: Changjiang Scholar Program of Chinese Ministry of Education;Number: LSIT201701D, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: ITL, Sponsor: Information Technology Laboratory;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61705253, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Key R&D Program of China (2017YFC0211900); National Natural Science Foundation of China (NSFC) (61705253); Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences (LSIT201701D). The authors gratefully acknowledge helpful and informative discussions with Gong Shunsheng on experimental details of this work.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<109>

Accession number:20171803618683
Title:Photonic microwave and mm-wave mixer for multichannel fiber transmission
Authors:Gao, Yongsheng (1, 2); Wen, Aijun (2, 3); Zhang, Wu (2, 3); Wang, Yong (2, 3); Zhang, Huixing (2, 4)
Author affiliation:(1) School of Electronics and Information, Northwestern Polytechnical University, Xi'an; 710072, China; (2) State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an; 710071, China; (3) Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an; 710071, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Journal of Lightwave Technology
Abbreviated source title:J Lightwave Technol
Volume:35
Issue:9
Issue date:May 1, 2017
Publication year:2017
Pages:1566-1574
Article number:7814218
Language:English
ISSN:07338724
CODEN:JLTEDG
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Photonic microwave and millimeter wave (mm-wave) frequency conversion is a promising technique for future electronic systems due to its large bandwidth, electromagnetic immunity, and compatibility with other optical systems. However, the conversion gain of a photonic mixer is often low and may be further reduced by the fiber dispersion. In this paper, a photonic microwave and mm-wave mixer using an integrated polarization division multiplexing Mach-Zehnder modulator (PDM-MZM) is proposed, which exhibits the merits of high conversion gain, high purity, and compensation of the power fading in multichannel fiber transmission. By suppressing the optical carrier and optimizing the modulation index, the conversion gain and isolation are respectively improved by 27.6 and 55.3 dB in the experiment. After power compensation, high and relatively flat microwave and mm-wave signals from 12 to 45 GHz are obtained after transmission over 25-km fiber. In addition, an up-converted 38-GHz mm-wave signal carrying 100-MSym/s 16-quadrature amplitude modulation (16QAM) vector signal is simultaneously transmitted over four channels with different fiber length (back to back, 4, 25, and 50 km). The power fading in each channel can be independently compensated, and good electrical spectra, constellation diagrams, and receiver sensitivity are obtained. 2017 IEEE.
Number of references:31
Main heading:Microwave power transmission
Controlled terms:Dispersion (waves) - Fibers - Light modulators - Microwave devices - Microwaves - Millimeter waves - Modulation - Optical communication - Optical frequency conversion - Photonics
Uncontrolled terms:Conversion gain - Fiber dispersion - Microwave mixers - Microwave Photonics - Multi channel - power fading
Classification code:706.1.1 Electric Power Transmission - 711 Electromagnetic Waves - 717.1 Optical Communication Systems - 741 Light, Optics and Optical Devices
Numerical data indexing:Decibel 2.76e+01dB, Decibel 5.53e+01dB, Frequency 1.20e+10Hz to 4.50e+10Hz, Size 2.50e+04m, Size 5.00e+04m
DOI:10.1109/JLT.2017.2652122
Funding details: Number: SKLST201407, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61306061, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61674119, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the China 111 Project under Grant B08038, in part by the National Natural Science Foundation of China under Grants 61306061 and 61674119, and in part by the Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences under Grant SKLST201407.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<110>

Accession number:20171403539925
Title:Stable and uniform multiwavelength erbium-doped fiber laser based on a microfiber knot resonator with a Sagnac loop reflector
Authors:Xu, Yiping (1); Ren, Liyong (2); Ma, Chengju (3); Kong, Xudong (2); Ren, Kaili (2); Song, Feng (1, 4)
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou; 434023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (3) School of Science, Xi’an Shiyou University, Xi’an; 710065, China; (4) School of Physics, Nankai University, Tianjin; 300071, China
Corresponding author:Xu, Yiping(ypxu@yangtzeu.edu.cn)
Source title:Journal of Optics (India)
Abbreviated source title:J. Opt.
Volume:46
Issue:4
Issue date:December 1, 2017
Publication year:2017
Pages:420-424
Language:English
ISSN:09728821
E-ISSN:09746900
CODEN:JOPTBQ
Document type:Journal article (JA)
Publisher:Optical Society of India
Abstract:In this paper, we proposed and demonstrated a stable and uniform multiwavelength erbium-doped fiber laser (EDFL) by using of the filer action of microfiber knot resonator (MKR) with a Sagnac loop reflector. By embedding the resonator to the ring cavity of the EDFL by means of a circulator, a multiwavelength EDFL is created. The number of the lasing lines with different wavelengths within 3-dB bandwidth is up to 42, the linewidth of each lasing line is about 0.05 nm and the side-mode suppression ratio is about 45 dB. The results demonstrate that the MKR with a Sagnac loop reflector can be employed as a high performance comb filter to realize a stable and uniform multiwavelength fiber laser. 2017, The Optical Society of India.
Number of references:33
Main heading:Optical fiber communication
Controlled terms:Erbium - Fiber lasers - Optical fibers - Reflection - Resonators - Ring lasers
Uncontrolled terms:Fiber communications - Micro-fiber - Micro-fiber knot resonators - Multi wavelength fiber laser - Multiwavelength - Multiwavelength erbium-doped fiber lasers - Ring cavities - Side mode suppression ratios
Classification code:547.2 Rare Earth Metals - 717.1 Optical Communication Systems - 741.1.2 Fiber Optics - 744 Lasers - 744.4 Solid State Lasers
Numerical data indexing:Decibel 3.00e+00dB, Decibel 4.50e+01dB, Size 5.00e-11m
DOI:10.1007/s12596-017-0394-1
Funding details: Number: 2016CFC767, Acronym: -, Sponsor: Natural Science Foundation of Hubei Province;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61605018, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant Nos. 61275149, 61535015 and 61605018, the Hubei Natural Science Foundation of China under Grant No. 2016CFC767, the Doctoral Scientific Research Startup Foundation of Yangtze University under Grant No. 801080010128, and the Open Research Fund of State Key Laboratory of Transient Optics and Photonics under Grant No. SKLST201612.

Database:Compendex
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Accession number:20171403517382
Title:Small-size streak tube for imaging lidar
Authors:Tian, Jinshou (1); Hui, Dandan (1, 2); Luo, Duan (1, 2); Wang, Tao (1); Zhang, Jun (3); Chen, Shaorong (3); Jia, Hui (3)
Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) National University of Defense Technology, China
Corresponding author:Tian, Jinshou(tianjs@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10328
Part number:1 of 1
Issue title:Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics
Issue date:2017
Publication year:2017
Article number:103280O
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510611009
Document type:Conference article (CA)
Conference name:31st International Congress on High-Speed Imaging and Photonics
Conference date:November 6, 2016 - November 10, 2016
Conference location:Osaka, Japan
Conference code:126843
Publisher:SPIE
Abstract:Streak tube imaging lidar, as a novel flash lidar, due to its advantages of higher resolution for low contrast conditions, compact and rugged physical configurations, small image distortions owing to its scannerless design, and higher image update rates, has immense potential to provide 3D single-laser-pulse scannerless imaging, 3D multispectral imaging, 3D multispectral fluorescence imaging, and 3D polarimetry. In order to further reduce the size and enlarge the field of view (FOV) of the lidar system, we designed a super small-size, large photocathode area and meshless streak tube with spherical cathode and screen. With the aid of Computer Simulation Technology Software package (CST), a model of the streak tube was built, and its predominant performances were illustrated via tracking electron trajectories. Spatial resolution of the streak tube reaches 20lp/mm over the entire 028mm photocathode working area, and its temporal resolution is better than 30ps. Most importantly, the external dimensions of the streak tube are only 050mmx100mm. And several prototypes are already manufactured on the basis of the computer design. 2017 SPIE.
Number of references:14
Main heading:Fluorescence imaging
Controlled terms:Computer software - High speed cameras - Imaging systems - Optical radar - Photocathodes - Streak cameras - Tubes (components)
Uncontrolled terms:Computer simulation technology - Electron trajectories - Large photocathode area - Meshless - Multispectral imaging - Streak tube imaging lidars - Super small-size - Temporal resolution
Classification code:619.1 Pipe, Piping and Pipelines - 714.1 Electron Tubes - 716.2 Radar Systems and Equipment - 723 Computer Software, Data Handling and Applications - 742.2 Photographic Equipment - 746 Imaging Techniques
Numerical data indexing:Size 2.80e-02m, Time 3.00e-11s
DOI:10.1117/12.2269063

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<112>

Accession number:20172403752852
Title:High power vertical stacked diode laser development using macro-channel water cooling and hard solder bonding technology
Authors:Yu, Dongshan (1); Liang, Xuejie (1); Wang, Jingwei (1); Li, Xiaoning (1); Nie, Zhiqiang (2); Liu, Xingsheng (1, 2)
Author affiliation:(1) Focuslight Technologies Inc, No. 56 Zhangba liu Road, High-Tech Zone, Xi'an, Shaanxi; 710077, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an Hi-Tech Industrial Development Zone, No. 17 Xinxi Road, New Industrial Park, Xi'an, Shaanxi; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10123
Part number:1 of 1
Issue title:Novel In-Plane Semiconductor Lasers XVI
Issue date:2017
Publication year:2017
Article number:101231A
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510606876
Document type:Conference article (CA)
Conference name:Novel In-Plane Semiconductor Lasers XVI 2017
Conference date:January 30, 2017 - February 2, 2017
Conference location:San Francisco, CA, United states
Conference code:1279611
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:A novel marco channel cooler (MaCC) has been developed for packaging high power diode vertical stacked (HPDL) lasers, which eliminates many of the issues in commercially-available copper micro-channel coolers (MCC). The MaCC coolers, which do not require deionized water as coolant, were carefully designed for compact size and superior thermal dissipation capability. Indium-free packaging technology was adopted throughout product design and fabrication process to minimize the risk of solder electromigration and thermal fatigue at high current density and long pulse width under QCW operation. Single MaCC unit with peak output power of up to 700W/bar at pulse width in microsecond range and 200W/bar at pulse width in millisecond range has been recorded. Characteristic comparison on thermal resistivity, spectrum, near filed and lifetime have been conducted between a MaCC product and its counterpart MCC product. QCW lifetime test (30ms 10Hz, 30% duty cycle) has also been conducted with distilled water as coolant. A vertical 40-MaCC stack product has been fabricated, total output power of 9 kilowatts has been recorded under QCW mode (3ms, 30Hz, 9% duty cycle). 2017 SPIE.
Number of references:13
Main heading:Semiconductor lasers
Controlled terms:Chip scale packages - Coolants - Cooling systems - Deionized water - Diodes - Gold alloys - Power semiconductor diodes - Product design - Tin alloys
Uncontrolled terms:Distilled water - Gold tin alloys - High current densities - High power diode laser - Indium-free - Microchannel coolers - Packaging technologies - Thermal dissipation
Classification code:445.1 Water Treatment Techniques - 546.2 Tin and Alloys - 547.1 Precious Metals - 714.2 Semiconductor Devices and Integrated Circuits - 744.4.1 Semiconductor Lasers - 803 Chemical Agents and Basic Industrial Chemicals - 913.1 Production Engineering
Numerical data indexing:Frequency 1.00e+01Hz, Frequency 3.00e+01Hz, Percentage 3.00e+01%, Percentage 9.00e+00%, Power 9.00e+03W, Time 3.00e-03s
DOI:10.1117/12.2250692

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<113>

Accession number:20174104242975
Title:Unsupervised large graph embedding
Authors:Nie, Feiping (1); Zhu, Wei (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Source title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Abbreviated source title:AAAI Conf. Artif. Intell., AAAI
Part number:1 of 1
Issue title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Issue date:2017
Publication year:2017
Pages:2422-2428
Language:English
Document type:Conference article (CA)
Conference name:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Conference date:February 4, 2017 - February 10, 2017
Conference location:San Francisco, CA, United states
Conference code:130407
Sponsor:Amazon; Artificial Intelligence; Baidu; et al.; IBM; Tencent
Publisher:AAAI press
Abstract:There are many successful spectral based unsupervised dimensionality reduction methods, including Laplacian Eigenmap (LE), Locality Preserving Projection (LPP), Spectral Regression (SR), etc. LPP and SR are two different linear spectral based methods, however, we discover that LPP and SR are equivalent, if the symmetric similarity matrix is doubly stochastic, Positive Semi-Definite (PSD) and with rank p, where p is the reduced dimension. The discovery promotes us to seek low-rank and doubly stochastic similarity matrix, we then propose an unsupervised linear dimensionality reduction method, called Unsupervised Large Graph Embedding (ULGE). ULGE starts with similar idea as LPP, it adopts an efficient approach to construct similarity matrix and then performs spectral analysis efficiently, the computational complexity can reduce to O(ndm), which is a significant improvement compared to conventional spectral based methods which need O(n2d) at least, where n, d and m are the number of samples, dimensions and anchors, respectively. Extensive experiments on several public available data sets demonstrate the efficiency and effectiveness of the proposed method.
Copyright ? 2017, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.
Number of references:25
Main heading:Matrix algebra
Controlled terms:Artificial intelligence - Spectrum analysis - Stochastic systems
Uncontrolled terms:Dimensionality reduction method - Doubly stochastic - Laplacian eigenmap - Linear dimensionality reduction - Locality preserving projections - Number of samples - Similarity matrix - Spectral regressions
Classification code:723.4 Artificial Intelligence - 921.1 Algebra - 961 Systems Science

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<114>

Accession number:20175104549161
Title:Deep temporal architecture for audiovisual speech recognition
Authors:Tian, Chunlin (1, 2); Yuan, Yuan (1); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China
Corresponding author:Lu, Xiaoqiang(luxiaoqiang@opt.ac.cn)
Source title:Communications in Computer and Information Science
Abbreviated source title:Commun. Comput. Info. Sci.
Volume:771
Part number:1 of 3
Issue title:Computer Vision - 2nd CCF Chinese Conference, CCCV 2017, Proceedings
Issue date:2017
Publication year:2017
Pages:650-661
Language:English
ISSN:18650929
ISBN-13:9789811072987
Document type:Conference article (CA)
Conference name:2nd Chinese Conference on Computer Vision, CCCV 2017
Conference date:October 11, 2017 - October 14, 2017
Conference location:Tianjin, China
Conference code:208009
Publisher:Springer Verlag
Abstract:The Audiovisual Speech Recognition (AVSR) is one of the applications of multimodal machine learning related to speech recognition, lipreading systems and video classification. In recent and related work, increasing efforts are made in Deep Neural Network (DNN) for AVSR, moreover some DNN models including Multimodal Deep Autoencoder, Multimodal Deep Belief Network and Multimodal Deep Boltzmann Machine perform well in experiments owing to the better generalization and nonlinear transformation. However, these DNN models have several disadvantages: (1) They mainly deal with modal fusion while ignoring temporal fusion. (2) Traditional methods fail to consider the connection among frames in the modal fusion. (3) These models aren’t end-to-end structure. We propose a deep temporal architecture, which has not only classical modal fusion, but temporal modal fusion and temporal fusion. Furthermore, the overfitting and learning with small size samples in the AVSR are also studied, so that we propose a set of useful training strategies. The experiments show the superiority of our model and necessity of the training strategies in three datasets: AVLetters, AVLetters2, AVDigits. In the end, we conclude the work. Springer Nature Singapore Pte Ltd. 2017.
Number of references:32
Main heading:Speech recognition
Controlled terms:Computer vision - Deep neural networks - Elastic constants - Mathematical transformations - Network architecture
Uncontrolled terms:Audio visual speech recognition - Deep belief networks - Deep boltzmann machines - Multi-modal - Non-linear transformations - Small size samples - Training strategy - Video classification
Classification code:723.5 Computer Applications - 751.5 Speech - 921.3 Mathematical Transformations - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.1007/978-981-10-7299-4_54

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<115>

Accession number:20173103998663
Title:A deep convolution neural network for object detection based
Authors:Yue, Qi (1, 2, 3); Ma, Caiwen (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100039, China; (3) Xi'an University of Posts and Telecomunications, Xi'an; 710121, China
Corresponding author:Yue, Qi(yueqi6@163.com)
Source title:Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology
Abbreviated source title:Harbin Gongye Daxue Xuebao
Volume:49
Issue:5
Issue date:May 30, 2017
Publication year:2017
Pages:159-164
Language:Chinese
ISSN:03676234
CODEN:HPKYAY
Document type:Journal article (JA)
Publisher:Harbin Institute of Technology
Abstract:Deep convolutional neural network (CNN) has too many parameters to initialize, and the usual random initialization method is easy to disappear of modified gradient and the problem of premature. The unsupervised PCA learning method is used to obtain oriented initialization parameters. And the gradient descendent method with exponential flexible momentum for updating free parameters of the network is proposed on the basis of analyzing the error propagation of the network. Image detection experiments are respectively carried out on pedestrian detection, and the results show that, compared with other artificial feature detection algorithms, this method can effectively improve target detection accuracy and the detection speed of this method is 20% faster than that of classical CNN; compared with homologous updating mechanism of other momentum, our method has faster convergence and smaller oscillation, and can improve the detection accuracy by 1.6%, 1.8% and 6.19% respectively in different depth models. 2017, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.
Number of references:15
Main heading:Deep neural networks
Controlled terms:Convolution - Image enhancement - Momentum - Neural networks - Object detection - Object recognition - Target tracking
Uncontrolled terms:Convolution neural network - Deep convolutional neural networks - Detection accuracy - Faster convergence - Feature detection algorithm - Initialization methods - Model optimization - Pedestrian detection
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 931.1 Mechanics
Numerical data indexing:Percentage 1.60e+00%, Percentage 1.80e+00%, Percentage 2.00e+01%, Percentage 6.19e+00%
DOI:10.11918/j.issn.0367-6234.201603145

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<116>

Accession number:20181304967768
Title:Four-wave mixing photon pair generation statistics for a nonlinear microcavity with chaotic and pulsed excitation
Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Little, Brent E. (3); Chu, Sai T. (4); Moss, David J. (1, 5); Morandotti, Roberto (1, 6, 7)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (4) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (5) Center for Microphotonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.
Volume:2017-January
Part number:1 of 1
Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Issue date:October 25, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781943580279
Document type:Conference article (CA)
Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:131854
Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We characterize four-wave mixing photon pair generation statistics in the chaotic pulsed regime associated with a self-locked nonlinear microcavity excitation scheme, and contrast these statistics against a pulsed actively mode-locked excitation. 2017 IEEE
Number of references:4
Main heading:Four wave mixing
Controlled terms:Locks (fasteners) - Microcavities - Photons
Uncontrolled terms:Excitation schemes - Mode-locked - Photon pair generations - Pulsed excitation
Classification code:714 Electronic Components and Tubes - 931.3 Atomic and Molecular Physics
DOI:10.1364/CLEO_QELS.2017.FTu4D.3

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<117>

Accession number:20163002627747
Title:The theoretical investigation of the impact of two-photon absorption and free-carrier absorption on phase-sensitive amplification in silicon waveguides
Authors:Ma, Yonghua (1); Liu, Hongjun (1); Sun, Qibing (1); Huang, Nan (1); Wang, Zhaolu (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi’an, China
Corresponding author:Liu, Hongjun(liuhongjun@opt.ac.cn)
Source title:Journal of Modern Optics
Abbreviated source title:J. Mod. Opt.
Volume:64
Issue:1
Issue date:January 2, 2017
Publication year:2017
Pages:93-99
Language:English
ISSN:09500340
E-ISSN:13623044
CODEN:JMOPEW
Document type:Journal article (JA)
Publisher:Taylor and Francis Ltd.
Abstract:We investigate the influence of two-photon absorption (TPA) and free-carrier absorption (FCA) on phase-sensitive amplification (PSA) process in a dispersion engineered silicon strip waveguide at the telecom wavelengths. The phase-dependent gain and phase-to-phase transfer functions as well as the phase regeneration capacity of PSA are numerically analysed. It is found that TPA and FCA will suppress the phase-sensitive extinction ratio (PER) and the efficiency of phase squeezing. Moreover, the phase regeneration capability of silicon waveguide-based PSA is investigated by comparing the regenerated signal waveforms at a different signal power with/without TPA and FCA. Our results have potential application in all-optical signal regeneration. 2016 Informa UK Limited, trading as Taylor & Francis Group.
Number of references:31
Main heading:Luminescence of organic solids
Controlled terms:Four wave mixing - Optical signal processing - Photons - Silicon - Two photon processes - Waveguides
Uncontrolled terms:All-optical signal regeneration - Free carrier absorption - Non-linear optical - Parametric process - Phase transfer functions - Phase-sensitive amplifications - Theoretical investigations - Two photon absorption
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.3 Waveguides - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics
DOI:10.1080/09500340.2016.1208850

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<118>

Accession number:20173404078688
Title:Filter-driven four wave mixing laser with a controllable repetition rate
Authors:Cooper, Andrew (1); Bao, Hualong (1); Di Lauro, Luigi (1); Rowley, Maxwell (1); Chu, Sai T. (2); Little, Brent E. (3); Morandotti, Roberto (4); Moss, David J. (5); Peccianti, Marco (1); Pasquazi, Alessia (1)
Author affiliation:(1) Emergent Photonics (Epic) Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (5) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia
Corresponding author:Cooper, Andrew(A.Cooper@sussex.ac.uk)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F52-IPRSN 2017
Part number:1 of 1
Issue title:Advanced Photonics, IPRSN 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Advanced Photonics, IPRSN 2017
Conference date:July 24, 2017 - July 27, 2017
Conference location:New Orleans, LA, United states
Conference code:136878
Publisher:OSA - The Optical Society
Abstract:We demonstrate a robust control over the repetition rate of a micro-comb laser by using the Filter-Driven Four Wave Mixing scheme. Results show that the coherence can be kept during the whole process. OSA 2017.
Number of references:7
Page count:3
Main heading:Four wave mixing
Controlled terms:Bandpass filters - Q switched lasers - Robust control
Uncontrolled terms:Controllable repetition rate - Repetition rate - Whole process
Classification code:703.2 Electric Filters - 731 Automatic Control Principles and Applications - 744.1 Lasers, General
DOI:10.1364/IPRSN.2017.IM4A.2

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<119>

Accession number:20173504101270
Title:A Method for Achieving Super Resolution Vibrational Sum-Frequency Generation Microscopy by Structured Illumination
Authors:Li, Ya-Hui (1, 2, 3); Chen, Dan-Ni (2, 4, 5); Niu, Han-Ben (2, 4, 5)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (2) Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Shenzhen Key Laboratory of Biomedicine Engineering, Shenzhen University, Shenzhen; 518060, China; (5) Shenzhen Key Laboratory of Micro-Nano Measuring and Imaging in Biomedical Optics, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China
Source title:IEEE Photonics Journal
Abbreviated source title:IEEE Photon. J.
Volume:9
Issue:3
Issue date:June 2017
Publication year:2017
Article number:7931556
Language:English
ISSN:19430655
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:A scheme was proposed to achieve wide-field vibrational sum-frequency generation (SFG) microscopy with subdiffraction-limited resolution in one dimension. In this approach, samples are illuminated with a structured visible field and a uniform IR field to induce vibrational sum-frequency generation. With five raw images acquired at five different phases of the visible stripe pattern, a super-resolved vibrational SFG (SR-SFG) image with the resolution triple to that of the original can be reconstructed. Theoretical framework describing the coherent image formation and reconstruction scheme for the SR-SFG imaging system was derived and carried out with numerical simulations to investigate its imaging performance. With a typical imaging system, the lateral resolution was improved from 390 nm of the conventional SFG imaging system, to around 130 nm of the SR-SFG imaging system. 2009-2012 IEEE.
Number of references:18
Main heading:Image resolution
Controlled terms:Image reconstruction - Imaging systems - Interferometry - Nanophotonics - Spectroscopy
Uncontrolled terms:Coherent imaging - Imaging performance - Lateral resolution - Limited resolution - Nonlinear microscopy - Structured illumination - Theoretical framework - Vibrational sum-frequency generations
Classification code:741.1 Light/Optics - 746 Imaging Techniques - 941.4 Optical Variables Measurements
Numerical data indexing:Size 1.30e-07m, Size 3.90e-07m
DOI:10.1109/JPHOT.2017.2705124
Funding details: Number: -, Acronym: -, Sponsor: Mayday Fund;Number: 2012CB825802, Acronym: -, Sponsor: Basic Research Program of Jiangsu Province;Number: 2015CB352005, Acronym: -, Sponsor: Basic Research Program of Jiangsu Province;Number: -, Acronym: -, Sponsor: Guangzhou Science and Technology Program key projects;Number: JCYJ 20160308104404452, Acronym: -, Sponsor: Shenzhen Graduate School, Peking University;Number: 2012YQ15009203, Acronym: -, Sponsor: China Youth Development Foundation;Number: 61235012, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: 61335001, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:Manuscript received March 5, 2017; revised May 8, 2017; accepted May 12, 2017. Date of publication May 18, 2017; date of current version June 21, 2017. This work was sponsored in part by the National Natural Science Foundation of China (NSFC) under Grant 61335001 and Grant 61235012, in part by the Special Funds of the Major Scientific Instruments Equipment Development of China under Grant 2012YQ15009203, in part by the National Basic Research Program of China under Grant 2015CB352005 and Grant 2012CB825802, in part by the Science and Technology Planning project of Shenzhen, China, under Grant JCYJ 20160308104404452. Corresponding author: Dan-Ni Chen (e-mail: danny@szu.edu.cn).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<120>

Accession number:20171703607548
Title:Application of linear CCD in tunnel crack detection
Authors:Jie, Liu (1, 2); Hua, Li (2); Xin, Jiang (2); Hemin, Chang (2)
Author affiliation:(1) University of Chinese, Academy of Sciences, Beijing; 100049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102562Y
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:To meet the actual demand, the linear CCD technology is applied to tunnel crack detection, and an edge detection algorithm is proposed to measure the crack width. Firstly, the application form of linear CCD imaging technology in tunnel crack detection is introduced concretely in this paper. Then, the key influencing parameters of measurement are discussed. Finally, an edge detection algorithm based on the change of gray level in linear direction is proposed and it is verified by experiments. Experimental results indicated that the linear CCD imaging technology in tunnel crack detection could obtain measurement data quickly and improve the efficiency of tunnel cracks' measurement, and that the detection algorithm could be used for the crack width measuring. 2017 SPIE.
Number of references:10
Main heading:Crack detection
Controlled terms:Edge detection - Photonics - Signal detection
Uncontrolled terms:Crack width - Detection algorithm - Edge detection algorithms - Influencing parameters - Linear CCD - Linear direction - Measurement data - Optical detection
Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics
DOI:10.1117/12.2257653

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<121>

Accession number:20174404326316
Title:Imaging through a scattering medium based on spatial transmission matrix
Authors:Zhuang, Bin (1, 2); Xu, Chengfang (1, 2); Geng, Yi (1, 2); Zhao, Guangzhi (1, 2); Zhou, Libin (3); He, Zhengquan (1); Ren, Liyong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, China; (2) University of Chinese Academy of Sciences, China; (3) Shaanxi University of Science and Technology, China
Corresponding author:He, Zhengquan(zhqhe@opt.ac.cn)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F61-ECBO 2017
Part number:1 of 1
Issue title:European Conference on Biomedical Optics, ECBO 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:European Conference on Biomedical Optics, ECBO 2017
Conference date:June 25, 2017 - June 29, 2017
Conference location:Munich, Germany
Conference code:137548
Sponsor:OSA; SPIE
Publisher:OSA - The Optical Society
Abstract:The inhomogeneity of scattering medium distorts the propagation of the waves, which has been detrimental to the performance of optical imaging. The operating time of the traditional solutions will be very long as the scanning is necessary during the imaging. A recovery solution based on spatial optical transmission matrix has been proposed. With the acquiring of the spatial optical transmission matrix, the incident object wave will be recovered directly from the distorted transmitted wave, in this way, only a single shot is needed during the imaging. The effectiveness of this method has been proved by the simulation and experiment, the principle is simpler and the algorithm is more efficient, which are beneficial to the imaging through the scattering medium. 2017 SPIE-OSA.
Number of references:11
Page count:4
Main heading:Light transmission
Uncontrolled terms:Inhomogeneities - Object waves - Operating time - Optical imaging - Optical transmission matrix - Scattering medium - Spatial transmission - Transmitted waves
Classification code:741.1 Light/Optics
DOI:10.1117/12.2285014

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<122>

Accession number:20173904206130
Title:Realization and testing of a deployable space telescope based on tape springs
Authors:Lei, Wang (1, 2); Li, Chuang (1); Zhong, Peifeng (1); Chong, Yaqin (1); Jing, Nan (1)
Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xian, Shaanxi; 710119, China; (2) Shaanxi Normal University, 620 Xichang'an Road, Xian, Shaanxi; 710119, China
Corresponding author:Li, Chuang(lichuang@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10339
Part number:1 of 1
Issue title:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers
Issue date:2017
Publication year:2017
Article number:1033920
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510611238
Document type:Conference article (CA)
Conference name:Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers
Conference date:May 21, 2017 - May 24, 2017
Conference location:Shanghai, China
Conference code:130514
Publisher:SPIE
Abstract:For its compact size and light weight, space telescope with deployable support structure for its secondary mirror is very suitable as an optical payload for a nanosatellite or a cubesat. Firstly the realization of a prototype deployable space telescope based on tape springs is introduced in this paper. The deployable telescope is composed of primary mirror assembly, secondary mirror assembly, 6 foldable tape springs to support the secondary mirror assembly, deployable baffle, aft optic components, and a set of lock-released devices based on shape memory alloy, etc. Then the deployment errors of the secondary mirror are measured with three-coordinate measuring machine to examine the alignment accuracy between the primary mirror and the deployed secondary mirror. Finally modal identification is completed for the telescope in deployment state to investigate its dynamic behavior with impact hammer testing. The results of the experimental modal identification agree with those from finite element analysis well. 2017 SPIE.
Number of references:6
Main heading:Springs (components)
Controlled terms:Finite element method - Hammers - High power lasers - Laser damage - Locks (fasteners) - Mirrors - Nanosatellites - Optical materials - Shape memory effect - Space telescopes
Uncontrolled terms:Alignment accuracy - Deployable telescopes - Dynamic behaviors - Impact hammer testing - Modal identification - Support structures - Tape springs - Three-coordinate measuring machines
Classification code:601.2 Machine Components - 605.2 Small Tools, Unpowered - 655.2 Satellites - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.8 Laser Beam Interactions - 921.6 Numerical Methods - 951 Materials Science
DOI:10.1117/12.2269968

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<123>

Accession number:20180304654530
Title:Lightweight structure design for supporting plate of primary mirror
Authors:Wang, Xiao (1, 2); Wang, Wei (1); Liu, Bei (1, 2); Qu, Yan Jun (1, 2); Li, Xu Peng (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No.17, Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Science, Jingjia Road, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10463
Part number:1 of 1
Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation
Issue date:2017
Publication year:2017
Article number:104631O
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614079
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133232
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:A topological optimization design for the lightweight technology of supporting plate of the primary mirror is presented in this paper. The supporting plate of the primary mirror is topologically optimized under the condition of determined shape, loads and environment. And the optimal structure is obtained. The diameter of the primary mirror in this paper is 450mm, and the material is SiC1. It is better to select SiC/Al as the supporting material. Six points of axial relative displacement can be used as constraints in optimization2. Establishing the supporting plate model and setting up the model parameters. After analyzing the force of the main mirror on the supporting plate, the model is applied with force and constraints. Modal analysis and static analysis of supporting plates are calculated. The continuum structure topological optimization mathematical model is created with the variable-density method. The maximum deformation of the surface of supporting plate under the gravity of the mirror and the first model frequency are assigned to response variable, and the entire volume of supporting structure is converted to object function. The structures before and after optimization are analyzed using the finite element method. Results show that the optimized fundamental frequency increases 29.85Hz and has a less displacement compared with the traditional structure. 2017 SPIE.
Number of references:11
Main heading:Structural design
Controlled terms:Earth (planet) - Finite element method - Mirrors - Modal analysis - Plates (structural components) - Shape optimization - Silicon carbide - Structural optimization - Topology
Uncontrolled terms:Fundamental frequencies - Lightweight structure designs - Lightweight technology - Primary mirrors - Relative displacement - Topological optimization - Traditional structures - Variable density methods
Classification code:408.1 Structural Design, General - 408.2 Structural Members and Shapes - 741.3 Optical Devices and Systems - 804.2 Inorganic Compounds - 921 Mathematics
Numerical data indexing:Frequency 2.99e+01Hz, Size 4.50e-01m
DOI:10.1117/12.2285730

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<124>

Accession number:20170603336429
Title:Adaptive Multimedia Data Forwarding for Privacy Preservation in Vehicular Ad-Hoc Networks
Authors:Xia, Yingjie (1); Chen, Wenzhi (1); Liu, Xuejiao (2); Zhang, Luming (3); Li, Xuelong (4); Xiang, Yang (5)
Author affiliation:(1) College of Computer Sciences, Zhejiang University, Hangzhou; 310027, China; (2) Institute of Service Engineering, Hangzhou Normal University, Hangzhou; 311121, China; (3) School of Computing, National University of Singapore, Singapore; 119077, Singapore; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (5) School of Information Technology, Deakin University, Burwood; VIC; 3125, Australia
Source title:IEEE Transactions on Intelligent Transportation Systems
Abbreviated source title:IEEE Trans. Intell. Transp. Syst.
Volume:18
Issue:10
Issue date:October 2017
Publication year:2017
Pages:2629-2641
Article number:7837606
Language:English
ISSN:15249050
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Vehicular ad-hoc networks (VANETs) have drawn much attention of researchers. The vehicles in VANETs frequently join and leave the networks, and therefore restructure the network dynamically and automatically. Forwarded messages in vehicular ad-hoc networks are primarily multimedia data, including structured data, plain text, sound, and video, which require access control with efficient privacy preservation. Ciphertext-policy attribute-based encryption (CP-ABE) is adopted to meet the requirements. However, solutions based on traditional CP-ABE suffer from challenges of the limited computational resources on-board units equipped in the vehicles, especially for the complex policies of encryption and decryption. In this paper, we propose a CP-ABE delegation scheme, which allows road side units (RSUs) to perform most of the computation, for the purpose of improving the decryption efficiency of the vehicles. By using decision tree to jointly optimize multiple factors, such as the distance from RSU, the communication and computational cost, the CP-ABE delegation scheme is adaptively activated based on the estimation of various vehicles decryption overhead. Experimental results thoroughly demonstrate that our scheme is effective and efficient for multimedia data forwarding in vehicular ad-hoc networks with privacy preservation. 2017 IEEE.
Number of references:51
Main heading:Vehicular ad hoc networks
Controlled terms:Access control - Cryptography - Data privacy - Decision trees - Vehicle to vehicle communications - Vehicles
Uncontrolled terms:Adaptive multimedia - Attributed-based encryptions - Ciphertext-policy attribute-based encryptions - Computational resources - Encryption and decryption - Multimedia messages - Privacy preservation - Vehicular Adhoc Networks (VANETs)
Classification code:716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 961 Systems Science
DOI:10.1109/TITS.2017.2653103

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<125>

Accession number:5164666
Title:Reweighted Infrared Patch-Tensor Model with Both Nonlocal and Local Priors for Single-Frame Small Target Detection
Authors:Dai, Yimian (1); Wu, Yiquan (1, 2)
Author affiliation:(1) College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing; 211106, China; (2) Key Laboratory of Spectral Imaging Technology CAS, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710000, China
Corresponding author:Wu, Yiquan(nuaaimagestrong@163.com)
Source title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Abbreviated source title:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.
Volume:10
Issue:8
Issue date:August 2017
Publication year:2017
Pages:3752-3767
Article number:7932858
Language:English
ISSN:19391404
E-ISSN:21511535
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers
Abstract:Many state-of-the-art methods have been proposed for infrared small target detection. They work well on the images with homogeneous backgrounds and high-contrast targets. However, when facing highly heterogeneous backgrounds, they would not perform very well, mainly due to: 1) the existence of strong edges and other interfering components, 2) not utilizing the priors fully. Inspired by this, we propose a novel method to exploit both local and nonlocal priors simultaneously. First, we employ a new infrared patch-tensor (IPT) model to represent the image and preserve its spatial correlations. Exploiting the target sparse prior and background nonlocal self-correlation prior, the target-background separation is modeled as a robust low-rank tensor recovery problem. Moreover, with the help of the structure tensor and reweighted idea, we design an entrywise local-structure-adaptive and sparsity enhancing weight to replace the globally constant weighting parameter. The decomposition could be achieved via the elementwise reweighted higher order robust principal component analysis with an additional convergence condition according to the practical situation of target detection. Extensive experiments demonstrate that our model outperforms the other state-of-the-arts, in particular for the images with very dim targets and heavy clutters. ? 2008-2012 IEEE.
Number of references:52
Controlled terms:detection method - image processing - numerical model - principal component analysis
Classification code:71.8.5.4 Remote sensing: numerical and image analysis
DOI:10.1109/JSTARS.2017.2700023
Funding details: Number: 61573183, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61573183, and in part by Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences under Grant LSIT201401.

Database:GEOBASE
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<126>

Accession number:20165203170887
Title:Short-term prediction of UT1-UTC by combination of the grey model and neural networks
Authors:Lei, Yu (1, 2); Guo, Min (3); Hu, Dan-dan (3); Cai, Hong-bing (1, 2); Zhao, Dan-ning (1, 4); Hu, Zhao-peng (1, 4); Gao, Yu-ping (1, 2)
Author affiliation:(1) National Time Service Center, Chinese Academy of Sciences, Xi'an; Shaanxi; 710600, China; (2) Key Laboratory of Time and Frequency Primary Standards, Chinese Academy of Sciences, Xi'an; Shaanxi; 710600, China; (3) Xi'an Institute of Optics and Precision Mechanics, Xi'an; Shaanxi; 710119, China; (4) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Lei, Yu(leiyu@ntsc.ac.cn)
Source title:Advances in Space Research
Abbreviated source title:Adv. Space Res.
Volume:59
Issue:2
Issue date:January 15, 2017
Publication year:2017
Pages:524-531
Language:English
ISSN:02731177
E-ISSN:18791948
CODEN:ASRSDW
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:UT1-UTC predictions especially short-term predictions are essential in various fields linked to reference systems such as space navigation and precise orbit determinations of artificial Earth satellites. In this paper, an integrated model combining the grey model GM(1, 1) and neural networks (NN) are proposed for predicting UT1-UTC. In this approach, the effects of the Solid Earth tides and ocean tides together with leap seconds are first removed from observed UT1-UTC data to derive UT1R-TAI. Next the derived UT1R-TAI time-series are de-trended using the GM(1, 1) and then residuals are obtained. Then the residuals are used to train a network. The subsequently predicted residuals are added to the GM(1, 1) to obtain the UT1R-TAI predictions. Finally, the predicted UT1R-TAI are corrected for the tides together with leap seconds to obtain UT1-UTC predictions. The daily values of UT1-UTC between January 7, 2010 and August 6, 2016 from the International Earth Rotation and Reference Systems Service (IERS) 08 C04 series are used for modeling and validation of the proposed model. The results of the predictions up to 30 days in the future are analyzed and compared with those by the GM(1, 1)-only model and combination of the least-squares (LS) extrapolation of the harmonic model including the linear part, annual and semi-annual oscillations and NN. It is found that the proposed model outperforms the other two solutions. In addition, the predictions are compared with those from the Earth Orientation Parameters Prediction Comparison Campaign (EOP PCC) lasting from October 1, 2005 to February 28, 2008. The results show that the prediction accuracy is inferior to that of those methods taking into account atmospheric angular momentum (AAM), i.e., Kalman filter and adaptive transform from AAM to LODR, but noticeably better that of the other existing methods and techniques, e.g., autoregressive filtering and least-squares collocation. 2016 COSPAR
Number of references:22
Main heading:Forecasting
Controlled terms:Earth (planet) - Kalman filters - Least squares approximations - Orbits - Tides
Uncontrolled terms:Artificial Earth satellites - Earth orientation parameters - Grey Model - Least-squares collocation - Modeling and validation - Neural network (nn) - Precise orbit determination - UT1-UTC
Classification code:471.4 Seawater, Tides and Waves - 921.6 Numerical Methods
DOI:10.1016/j.asr.2016.10.030

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<127>

Accession number:20170603335953
Title:Interface modification based ultrashort laser microwelding between SiC and fused silica
Authors:Zhang, Guodong (1, 2); Bai, Jing (1); Zhao, Wei (1); Zhou, Kaiming (1); Cheng, Guanghua (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Cheng, Guanghua(gcheng@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:3
Issue date:February 6, 2017
Publication year:2017
Pages:1702-1709
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:It is a big challenge to weld two materials with large differences in coefficients of thermal expansion and melting points. Here we report that the welding between fused silica (softening point, 1720°C) and SiC wafer (melting point, 3100°C) is achieved with a near infrared femtosecond laser at 800 nm. Elements are observed to have a spatial distribution gradient within the cross section of welding line, revealing that mixing and inter-diffusion of substances have occurred during laser irradiation. This is attributed to the femtosecond laser induced local phase transition and volume expansion. Through optimizing the welding parameters, pulse energy and interval of the welding lines, a shear joining strength as high as 15.1 MPa is achieved. In addition, the influence mechanism of the laser ablation on welding quality of the sample without pre-optical contact is carefully studied by measuring the laser induced interface modification. 2017 Optical Society of America.
Number of references:30
Main heading:Fused silica
Controlled terms:Femtosecond lasers - Infrared devices - Laser ablation - Melting point - Silicon carbide - Thermal expansion - Welding
Uncontrolled terms:Coefficients of thermal expansions - Influence mechanism - Interface modification - Joining strength - Local phase transition - Near infrared femtosecond laser - Softening points - Welding parameters
Classification code:538.2 Welding - 641.2 Heat Transfer - 804.2 Inorganic Compounds - 812.3 Glass - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
Numerical data indexing:Pressure 1.51e+07Pa, Size 8.00e-07m, Temperature 1.99e+03K, Temperature 3.37e+03K
DOI:10.1364/OE.25.001702
Funding details: Number: 61378019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61223007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61378019, 61223007). The corresponding author thanks Prof. Hong Chang and Dr. Maojie Yang in Institute of Earth Environment, CAS for SEM imaging.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<128>

Accession number:20181605018231
Title:Photonic microwave and RF signal processing based on optical micro-combs
Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5); Mitchell, Arnan (2); Moss, David J. (1)
Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia; (3) Department of Physics and Material Science, University of Hong Kong, Hong Kong, Hong Kong; (4) Xi'an Institute of Optics and Precision Mechanics Precision Mechanics of CAS, Xi'an, China; (5) INRS - énergie, Matériaux et Télécommunications, Varennes; QC; J3X 1S2, Canada
Source title:Progress in Electromagnetics Research Symposium
Abbreviated source title:Prog. Electromagn. Res. Symp.
Volume:2017-November
Part number:1 of 1
Issue title:2017 Progress In Electromagnetics Research Symposium - Fall, PIERS - FALL 2017 - Proceedings
Issue date:2017
Publication year:2017
Pages:2232-2236
Language:English
ISSN:15599450
E-ISSN:19317360
ISBN-13:9781538612118
Document type:Conference article (CA)
Conference name:2017 Progress In Electromagnetics Research Symposium - Fall, PIERS - FALL 2017
Conference date:November 19, 2017 - November 22, 2017
Conference location:Singapore, Singapore
Conference code:134703
Sponsor:Computer Simulation Technology (CST); et al.; Interhorizon Corporation Pte Ltd.; Linbou Nearfield Technology Co., Ltd.; Office of Naval Research Global; The Electromagnetics Academy
Publisher:Electromagnetics Academy
Abstract:We demonstrate the use of integrated micro-resonator based optical frequency comb sources as the basis for transversal filtering functions for microwave and radio frequency photonic filtering and advanced functions. 2018 Electromagnetics Academy. All rights reserved.
Number of references:40
Main heading:Microwave resonators
Controlled terms:Microelectromechanical devices - Optical signal processing
Uncontrolled terms:Advanced functions - Filtering functions - Micro resonators - Optical frequency comb sources - Photonic microwave - Radio frequency photonics - RF signal processing
Classification code:714 Electronic Components and Tubes
DOI:10.1109/PIERS-FALL.2017.8293510
Funding details:
Funding text:This work was supported by the Australian Research Council Discovery Projects scheme.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<129>

Accession number:20174504371628
Title:Multichannel phase-sensitive amplification in a low-loss CMOS-compatible spiral waveguide
Authors:Zhang, Yanbing (1); Reimer, Christian (1); Wu, Jenny (1); Roztocki, Piotr (1); Wetzel, Benjamin (1, 2); Little, Brent E. (3); Chu, Sai T. (4); Moss, David J. (5); Eggleton, Benjamin J. (6); Kues, Michael (1, 7); Morandotti, Roberto (1, 8, 9)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Mathematical and Physical Sciences, University of Sussex, Falmer; Brighton; BN1 9QH, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi’an, China; (4) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, Hong Kong; (5) Center for Micro-Photonics, Swinburne University of Technology, Hawthorn; VC; 3122, Australia; (6) CUDOS, IPOS, School of Physics, University of Sydney, Sydney; NSW; 2006, Australia; (7) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (9) National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia
Corresponding author:Morandotti, Roberto(morandotti@emt.inrs.ca)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:42
Issue:21
Issue date:November 1, 2017
Publication year:2017
Pages:4391-4394
Language:English
ISSN:01469592
E-ISSN:15394794
CODEN:OPLEDP
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:We investigate single-channel and multichannel phase-sensitive amplification (PSA) in a highly nonlinear, CMOS-compatible spiral waveguide with ultralow linear and negligible nonlinear losses. We achieve a net gain of 10.4 dB and an extinction ratio of 24.6 dB for single-channel operation, as well as a 5 dB gain and a 15 dB extinction ratio spanning over a bandwidth of 24 nm for multiple-channel operation. In addition, we derive a simple analytic solution that enables calculating the maximum phase-sensitive gain in any Kerr medium featuring linear and nonlinear losses. These results not only give a clear guideline for designing PSA-based amplifiers but also show that it is possible to implement both optical regeneration and amplification in a single on-chip device. 2017 Optical Society of America.
Number of references:22
Main heading:Amplification
Controlled terms:CMOS integrated circuits - Light extinction - Waveguides
Uncontrolled terms:Analytic solution - Extinction ratios - Multiple channels - On-chip devices - Optical regeneration - Phase-sensitive amplifications - Single channel operation - Spiral waveguides
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 714.3 Waveguides - 741.1 Light/Optics
Numerical data indexing:Decibel 1.04e+01dB, Decibel 1.50e+01dB, Decibel 2.46e+01dB, Decibel 5.00e+00dB, Size 2.40e-08m
DOI:10.1364/OL.42.004391
Funding details: Number: -, Acronym: ARC, Sponsor: Australian Research Council;Number: DP150104327, Acronym: ARC, Sponsor: Australian Research Council;Number: 074-U01, Acronym: -, Sponsor: -;Number: PIOF-GA-2013-625466, Acronym: -, Sponsor: -;Number: -, Acronym: MSCA, Sponsor: H2020 Marie Sk&lstrok;odowska-Curie Actions;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: 656607, Acronym: MSCA, Sponsor: Multiple Sclerosis Center of Atlanta;Number: -, Acronym: -, Sponsor: Canada Research Chairs;Number: IT06530, Acronym: -, Sponsor: Mitacs;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;
Funding text:Funding. Canada Research Chairs (MESI PSR-SIIR); Natural Sciences and Engineering Research Council of Canada (NSERC); Mitacs (IT06530); H2020 Marie Sk?odowska-Curie Actions (MSCA) (656607); European Union’s FP7 Programme (PIOF-GA-2013-625466); ITMO Fellowship and Professorship Program (074-U01); 1000 Talents Sichuan Program; Australian Research Council (ARC) (DP150104327).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<130>

Accession number:20172003669299
Title:Re-weighted discriminatively embedded K-means for multi-view clustering
Authors:Xu, Jinglin (1); Han, Junwei (1); Nie, Feiping (2); Li, Xuelong (3)
Author affiliation:(1) School of Automation, Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Computer Science, Center for OPTical IMagery Analysis and Learning, Northwestern Polytechnical University, Xi'an; 710072, China; (3) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China
Corresponding author:Xu, Jinglin(xujinglinlove@gmail.com)
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:6
Issue date:June 2017
Publication year:2017
Pages:3016-3027
Article number:7847419
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Recent years, more and more multi-view data are widely used in many real-world applications. This kind of data (such as image data) is high dimensional and obtained from different feature extractors, which represents distinct perspectives of the data. How to cluster such data efficiently is a challenge. In this paper, we propose a novel multi-view clustering framework, called re-weighted discriminatively embedded K -means, for this task. The proposed method is a multi-view least-absolute residual model, which induces robustness to efficiently mitigates the influence of outliers and realizes dimension reduction during multi-view clustering. Specifically, the proposed model is an unsupervised optimization scheme, which utilizes iterative re-weighted least squares to solve least-absolute residual and adaptively controls the distribution of multiple weights in a re-weighted manner only based on its own low-dimensional subspaces and a common clustering indicator matrix. Furthermore, theoretical analysis (including optimality and convergence analysis) and the optimization algorithm are also presented. Compared with several state-of-the-art multi-view clustering methods, the proposed method substantially improves the accuracy of the clustering results on widely used benchmark data sets, which demonstrates the superiority of the proposed work. 1992-2012 IEEE.
Number of references:48
Main heading:Iterative methods
Controlled terms:Clustering algorithms
Uncontrolled terms:Convergence analysis - Dimension reduction - Iterative reweighted least square - K-means - Low-dimensional subspace - Multi-view clustering - Optimization algorithms - Optimization scheme
Classification code:903.1 Information Sources and Analysis - 921.6 Numerical Methods
DOI:10.1109/TIP.2017.2665976

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<131>

Accession number:20170803363276
Title:Resonance spiking by periodic loss in the double-sided liquid cooling disk oscillator
Authors:Nie, Rongzhi (1, 2); She, Jiangbo (1); Li, Dongdong (4); Li, Fuli (2); Peng, Bo (1, 3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an; 710119, China; (2) School of Science, Xi'An Jiaotong University, Xi'an; 710049, China; (3) Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu; 210046, China; (4) School of Electronic Engineering, Xi'An University of Post and Telecommunications, Xi'an; 710121, China
Source title:Laser Physics
Abbreviated source title:Laser Phys.
Volume:27
Issue:3
Issue date:March 2017
Publication year:2017
Article number:035002
Language:English
ISSN:1054660X
E-ISSN:15556611
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:A double-sided liquid cooling Nd:YAG disk oscillator working at a pump repetition rate of 20 Hz is demonstrated. The output energy of 376 mJ is realized, corresponding to the optical-optical efficiency of 12.8% and the slope efficiency of 14%. The pump pulse width is 300 μs and the laser pulse width is 260 μs. Instead of being a damped signal, the output of laser comprises undamped spikes. A periodic intra-cavity loss was found by numerical analysis, which has a frequency component near the eigen frequency of the relaxation oscillation. Resonance effect will induce amplified spikes even though the loss fluctuates in a small range. The Shark-Hartmann sensor was used to investigate the wavefront aberration induced by turbulent flow and temperature gradient. According to the wavefront and fluid mechanics analysis, it is considered that the periodic intra-cavity loss can be attributed to turbulent flow and temperature gradient. 2017 Astro Ltd.
Number of references:25
Main heading:Aberrations
Controlled terms:Cooling - Disks (machine components) - Fluid mechanics - Liquid lasers - Liquids - Optical pumping - Resonance - Thermal gradients - Turbulent flow - Wavefronts - Yttrium aluminum garnet
Uncontrolled terms:Disk lasers - Frequency components - Liquid cooling - Optical-optical efficiency - Relaxation oscillation - Shark-Hartmann sensor - Slope efficiencies - Wavefront aberrations
Classification code:601.2 Machine Components - 631.1 Fluid Flow, General - 641.1 Thermodynamics - 641.2 Heat Transfer - 744.3 Liquid Lasers - 931.1 Mechanics
Numerical data indexing:Energy 3.76e-01J, Frequency 2.00e+01Hz, Percentage 1.28e+01%, Percentage 1.40e+01%, Time 2.60e-04s, Time 3.00e-04s
DOI:10.1088/1555-6611/aa5c10
Funding details: Number: 2016JQ6016, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61308086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is financially supported by the National Natural Science Foundation of China (NSFC, No. 61308086) and Natural Science Basic Research Plan in Shaanxi Province of China (No: 2016JQ6016).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<132>

Accession number:20182405306595
Title:Microwave and RF applications of micro-combs
Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5); Mitchell, Arnan (2); Moss, David J. (1)
Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia; (3) Department of Physics and Material Science, City University of Hong Kong, Hong Kong, Hong Kong; (4) Xi'An Institute of Optics and Precision Mechanics Precision Mechanics of CAS, Xi'an, China; (5) INRS-énergie, Matériaux et Télécommunications, Varennes; QC; J3X 1S2, Canada
Source title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Abbreviated source title:Opto-Electron. Commun. Conf., OECC Photonics Glob. Conf., PGC
Volume:2017-November
Part number:1 of 1
Issue title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Issue date:November 17, 2017
Publication year:2017
Pages:1-4
Language:English
ISBN-13:9781509062935
Document type:Conference article (CA)
Conference name:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Conference date:July 31, 2017 - August 4, 2017
Conference location:Singapore, Singapore
Conference code:132616
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We demonstrate the use of integrated micro-resonator based optical frequency comb sources as the basis for transversal filtering functions for microwave and radio frequency photonic filtering and advanced functions. 2017 IEEE.
Number of references:32
Main heading:Microwave resonators
Controlled terms:Crystal resonators - Microelectromechanical devices - Microwaves - Photonics
Uncontrolled terms:Advanced functions - Filtering functions - Frequency combs - Micro resonators - Optical frequency comb sources - Radio frequency photonics - RF applications
Classification code:711 Electromagnetic Waves - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 714 Electronic Components and Tubes - 741.1 Light/Optics
DOI:10.1109/OECC.2017.8115044

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<133>

Accession number:20174804481697
Title:A multi-task framework for weather recognition
Authors:Li, Xuelong (1); Wang, Zhigang (2); Lu, Xiaoqiang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710019, China; (2) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China
Source title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference
Abbreviated source title:MM - Proc. ACM Multimed. Conf.
Part number:1 of 1
Issue title:MM 2017 - Proceedings of the 2017 ACM Multimedia Conference
Issue date:October 23, 2017
Publication year:2017
Pages:1318-1326
Language:English
ISBN-13:9781450349062
Document type:Conference article (CA)
Conference name:25th ACM International Conference on Multimedia, MM 2017
Conference date:October 23, 2017 - October 27, 2017
Conference location:Mountain View, CA, United states
Conference code:131373
Sponsor:ACM SIGMM
Publisher:Association for Computing Machinery, Inc
Abstract:Weather recognition is important in practice, while this task has not been thoroughly explored so far. The current trend of dealing with this task is treating it as a single classification problem, i.e., determining whether a given image belongs to a certain weather category or not. However, weather recognition differs significantly from traditional image classification, since several weather features may appear simultaneously. In this case, a simple classification result is insufficient to describe the weather condition. To address this issue, we propose to provide auxiliary weather related information for comprehensive weather description. Specifically, semantic segmentation of weather-cues, such as blue sky and white clouds, is exploited as an auxiliary task in this paper. Moreover, a convolutional neural network (CNN) based multi-task framework is developed which aims to concurrently tackle weather category classification task and weather-cues segmentation task. Due to the intrinsic relationships between these two tasks, exploring auxiliary semantic segmentation of weather-cues can also help to learn discriminative features for the classification task, and thus obtain superior accuracy. To verify the effectiveness of the proposed approach, extra segmentation masks of weather-cues are generated manually on an existing weather image dataset. Experimental results have demonstrated the superior performance of our approach. The enhanced dataset, source codes and pre-trained models are available at https://github.com/wzgwzg/Multitask-Weather. 2017 ACM.
Number of references:38
Main heading:Classification (of information)
Controlled terms:Convolution - Image segmentation - Neural networks - Semantics
Uncontrolled terms:Category Classification - Classification results - Convolutional neural network - Convolutional Neural Networks (CNN) - Discriminative features - Multitask learning - Semantic segmentation - Weather recognition
Classification code:716.1 Information Theory and Signal Processing
DOI:10.1145/3123266.3123382

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<134>

Accession number:20182205244172
Title:A Bayesian-adaboost model for stock trading rule discovery
Authors:Kong, Zhoufan (1); Yang, Jie (1); Huang, Qinghua (1); Li, Xuelong (2)
Author affiliation:(1) School of Electronica Information Engineering, South China University of Technology, Guangzhou; 510641, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Xi'an, Shaanxi; 710119, China
Corresponding author:Huang, Qinghua(qhhuang@scut.edu.cn)
Source title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., BioMed. Eng. Inf., CISP-BMEI
Volume:2018-January
Part number:1 of 1
Issue title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Issue date:July 2, 2017
Publication year:2017
Pages:1-6
Language:English
ISBN-13:9781538619377
Document type:Conference article (CA)
Conference name:10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Conference date:October 14, 2017 - October 16, 2017
Conference location:Shanghai, China
Conference code:135071
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Detecting the trading patterns with different technical indicators from the historical financial data is an efficient way to forecast the trading decisions in the financial market. In most cases, the trading patterns which consist of some specific combinations of technical indicators are significant in predicting the efficient trading decisions. However, discovering those combinations is a rather challenge assignment. In this paper, we propose a novel method to detect the trading patterns and later the Naive bayes with Adaboost method was employed to determine the trading decisions. The proposed method has been implemented on two historical stock datasets, the experimental results demonstrate that the proposed algorithm outperforms the other three algorithms and could provide a worthwhile reference for the financial investments. 2017 IEEE.
Number of references:30
Main heading:Commerce
Controlled terms:Adaptive boosting - Biomedical engineering - Electronic trading - Financial markets - Forecasting - Image processing
Uncontrolled terms:AdaBoost model - Biclusters - Financial data - Financial investments - Naive Bayeians method - Stock predictions - Technical indicator - Trading patterns
Classification code:461.1 Biomedical Engineering - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications
DOI:10.1109/CISP-BMEI.2017.8302138
Funding details: Number: 2014A050503020, Acronym: -, Sponsor: -;Number: 61571193, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:ACKNOWLEDGMENT This work was partially supported by National Natural Science Foundation of China (Nos. 61372007 and 61571193), and Guangdong Provincial Science and Technology Program - International Collaborative Projects (No. 2014A050503020).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<135>

Accession number:20183105646934
Title:A markerless visual-motor tracking system for behavior monitoring in DCD assessment
Authors:Li, Shengyan (1); Li, Bin (1, 2); Zhang, Shixiong (1); Fu, Hong (1); Lo, Wai-Lun (1); Yu, Jie (3); Sit, Cindy H. P. (3); Li, Ruimin (1, 2)
Author affiliation:(1) Department of Computer Science, Chu Hai College of Higher Education, Hong Kong, Hong Kong; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, University of Chinese Academy of Sciences, Beijing, China; (3) Department of Sports Science and Physical Education, Chinese University of Hong Kong, Shatin, Hong Kong
Corresponding author:Fu, Hong(hfu@chuhai.edu.hk)
Source title:Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
Abbreviated source title:Proc. - Asia-Pacific Signal Inf. Process. Assoc. Annu. Summit Conf., APSIPA ASC
Volume:2018-February
Part number:1 of 1
Issue title:Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
Issue date:July 2, 2017
Publication year:2017
Pages:774-777
Language:English
ISBN-13:9781538615423
Document type:Conference article (CA)
Conference name:9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
Conference date:December 12, 2017 - December 15, 2017
Conference location:Kuala Lumpur, Malaysia
Conference code:134570
Sponsor:DOLBY; et al.; Microsoft; Mobvoi; National Instruments; Sogou
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Development coordination disorder (DCD) is a disorder of visual-motor integration in children, so the study on coordination of vision and motion is essential to understand the mechanism of DCD. The standardized assessments with certain visual-motor tasks are often used to detect impairments in eye-motion coordination, which is the most important component for diagnosis of DCD. However, these assessments emphasize on motor performance of children, while ignoring the detailed process of eye-motion coordination in performing these tasks. Therefore, it is a need to develop a proper digital visual-motor system to detect the eye movement and body motion simultaneously during these tasks, to study the mechanism of a typical eye-motion coordination. Currently, the eye-motion system is based on marker to detect the joints and gaze points for integration. This kind of system is very expensive and the markers may affect children's behavior in the task of DCD assessment. In this study, an integrated and markerless eye-motion system is developed to detect children's behavior in DCD assessment. In this system, a multi-Kinect system is used to monitor body motion and extract the skeletal joints. The gaze point is detected by a head-mount eye tracker and will be integrated into the system of body motion using image processing method. With the proposed system, the skeletal joints and gaze points can be obtained simultaneously for further digital DCD assessment. 2017 IEEE.
Number of references:6
Main heading:Eye tracking
Controlled terms:Eye movements - Image processing - Monitoring - Motion planning - Processing
Uncontrolled terms:Behavior monitoring - Image processing - methods - Motion coordination - Motor performance - Skeletal joints - Tracking system - Visual motor integrations - Visual-motor task
Classification code:913.4 Manufacturing
DOI:10.1109/APSIPA.2017.8282139
Funding details: Number: -, Acronym: -, Sponsor: Canadian Anesthesiologists' Society;Number: -, Acronym: -, Sponsor: University of Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: Chinese University of Hong Kong;Number: UGC/FDS13/E02/16, Acronym: -, Sponsor: -;
Funding text:1 Department of Computer Science, Chu Hai College of Higher Education, Hong Kong 2 Xi’an Institute of Optics and Precision Mechanics of CAS, University of Chinese Academy of Sciences, Beijing, China 3 Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, Hong Kong * Corresponding Author, E-mail: hfu@chuhai.edu.hk, Tel: +852-29727250The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Reference No.: UGC/FDS13/E02/16).

Database:Compendex
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<136>

Accession number:20172703889299
Title:Large-area micro-channel plate photomultiplier tube
Authors:Sun, Jianning (1); Ren, Ling (1); Cong, Xiaoqing (1); Huang, Guorui (1); Jin, Muchun (1); Li, Dong (1); Liu, Hulin (3); Qiao, Fangjian (1); Qian, Sen (2); Si, Shuguang (1); Tian, Jinshou (2); Wang, Xingchao (1); Wang, Yifang (2); Wei, Yonglin (3); Xin, Liwei (3); Zhang, Haoda (1); Zhao, Tianchi (2)
Author affiliation:(1) North Night Vision Technology Co., Ltd, Nanjing; 211100, China; (2) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:4
Issue date:April 25, 2017
Publication year:2017
Article number:0402001
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:According to the requirement of detector in high energy physics and nuclear physics national scientific equipment, the large-area micro-channel plate photomultiplier(MCP-PMT) different from dynode PMT was researched. The large-area MCP-PMT had low-background glass and microchannel plate multiplier. Using Sb-K-Cs as photocathode, MCP-PMT enjoyed very high quantum efficiency at 350- 450 nm. With double MCPs as electron amplifier, the gain could reach 107. The detection efficiency and single photon detection of large-area PMT was improved. Compared with conventional dynode PMT, this MCP-PMT is a completely new design in structure and has better ratio of spectrum peak to valley, high gain, better anode uniformity, fast response time in single photoelectron detection. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:10
Main heading:Image storage tubes
Controlled terms:Microchannels - Particle beams - Photoelectron spectroscopy - Photomultipliers - Photons - Plates (structural components) - Quantum efficiency
Uncontrolled terms:Detection efficiency - High quantum efficiency - Low background - Micro channel plate - Micro-channel plate photomultiplier tubes - Scientific equipment - Single photoelectrons - Single photon detection
Classification code:408.2 Structural Members and Shapes - 714.1 Electron Tubes - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics - 932.1 High Energy Physics
Numerical data indexing:Size 3.50e-07m to 4.50e-07m
DOI:10.3788/IRLA201746.0402001

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<137>

Accession number:20173704143891
Title:Ti:Sapphire Femtosecond Pulses Pumped Directly by Green Diode Lasers
Authors:Wang, Xianglin (1, 2); Hu, Xiaohong (1, 2); Xu, Peng (1); Zhang, Wei (1); Yang, Zhi (1); Wang, Yishan (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Wang, Yishan(yshwang@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:44
Issue:7
Issue date:July 10, 2017
Publication year:2017
Article number:0701002
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The laser beams emitted from a pair of 520 nm/1.45 W green diode lasers are shaped and focused on a Ti:sapphire laser crystal to complete the pumping process. The intracavity dispersion is compensated by using the GTI (Gires-Tournois interferometer) mirrors. The stable Kerr-lens mode locking state is achieved with an output pulse width of 91 fs, an output power of 208 mW, and a single pulse energy of 1.59 nJ. The narrowest pulse width of 82 fs is further realized after the optimization of cavity-type parameters and the maximum output power reaches 232 mW when the cavity length is shortened. 2017, Chinese Lasers Press. All right reserved.
Number of references:16
Main heading:Optical pumping
Controlled terms:Diodes - Electromagnetic pulse - Laser accessories - Laser beams - Laser mode locking - Locks (fasteners) - Q switched lasers - Sapphire - Semiconductor lasers - Ultrashort pulses
Uncontrolled terms:Diode laser pumping - Gires-Tournois interferometers - Intra-cavity dispersion - Kerr lens mode locking - Laser technique - Maximum output power - Single pulse energy - Ti: Sapphire laser
Classification code:482.2.1 Gems - 701 Electricity and Magnetism - 744 Lasers
Numerical data indexing:Time 8.20e-14s, Time 9.10e-14s, Energy 1.59e-09J, Power 2.08e-01W, Power 2.32e-01W
DOI:10.3788/CJL201744.0701002

Database:Compendex
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<138>

Accession number:20171903648492
Title:A generalized power iteration method for solving quadratic problem on the Stiefel manifold
Authors:Nie, Feiping (1); Zhang, Rui (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi’an; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China
Corresponding author:Nie, Feiping(feipingnie@gmail.com)
Source title:Science China Information Sciences
Abbreviated source title:Sci. China Inf. Sci.
Volume:60
Issue:11
Issue date:November 1, 2017
Publication year:2017
Article number:112101
Language:English
ISSN:1674733X
E-ISSN:18691919
Document type:Journal article (JA)
Publisher:Science in China Press
Abstract:In this paper, we first propose a novel generalized power iteration (GPI) method to solve the quadratic problem on the Stiefel manifold (QPSM) as minWTW=I Tr(WTAW ? 2WTB) along with the theoretical analysis. Accordingly, its special case known as the orthogonal least square regression (OLSR) is under further investigation. Based on the aforementioned studies, we then majorly focus on solving the unbalanced orthogonal procrustes problem (UOPP). As a result, not only a general convergent algorithm is derived theoretically but the efficiency of the proposed approach is verified empirically as well. 2017, Science China Press and Springer-Verlag Berlin Heidelberg.
Number of references:18
Main heading:Problem solving
Controlled terms:Iterative methods
Uncontrolled terms:Orthogonal least squares - power iteration - Procrustes problem - Quadratic problem - Stiefel manifold
Classification code:921.6 Numerical Methods
DOI:10.1007/s11432-016-9021-9

Database:Compendex
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<139>

Accession number:20173804179887
Title:Polarization control methods in structured illumination microscopy
Authors:Zhao, Tian-Yu (1, 2); Zhou, Xing (1); Dan, Dan (1); Qian, Jia (1); Wang, Zhao-Jun (1); Lei, Ming (1); Yao, Bao-Li (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Lei, Ming(leiming@opt.ac.cn)
Source title:Wuli Xuebao/Acta Physica Sinica
Abbreviated source title:Wuli Xuebao
Volume:66
Issue:14
Issue date:July 20, 2017
Publication year:2017
Article number:148704
Language:Chinese
ISSN:10003290
CODEN:WLHPAR
Document type:Journal article (JA)
Publisher:Institute of Physics, Chinese Academy of Sciences
Abstract:Structured illumination microscopy (SIM) is one of the most promising super-resolution techniques, owing to its advantages of fast imaging speed and weak photo bleaching. The quality of the SIM image is greatly dependent on the contrast of the sinusoidal fringe illumination patterns. Low fringe contrast illumination will seriously affect the super-resolution result and lead to additional artifacts. The generation of fringe patterns with high contrast is the key requirement in hardware for the SIM technique. This can be done by the interference of two laser beams diffracted from the phase gratings addressed on a spatial light modulator. Meanwhile, for maximal interference contrast, precise polarization control to maintain s-polarization for different fringe orientations is critical. In this paper, we review several typical polarization control methods in SIM, and propose a new method by using a zero-order vortex half-wave retarder (VHR). Compared with the other methods, the presented VHR-based polarization control method is very efficient in terms of simple system configuration, ease of use, and high light energy utilization efficiency near to 100%. 2017 Chinese Physical Society.
Number of references:22
Main heading:Polarization
Controlled terms:Energy utilization - Laser beams - Light modulators - Optical resolving power - Vortex flow
Uncontrolled terms:Half-wave - Illumination patterns - Polarization control - Polarization control methods - Spatial light modulators - Structured illumination microscopies (SIM) - Structured illumination microscopy - Super resolution
Classification code:525.3 Energy Utilization - 631.1 Fluid Flow, General - 741.1 Light/Optics - 744.8 Laser Beam Interactions
Numerical data indexing:Percentage 1.00e+02%
DOI:10.7498/aps.66.148704
Funding details: Number: 11404389, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11474352, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61522511, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Project supported by the National Natural Science Foundation of China (Grant Nos. 61522511, 11404389, 81427802, 11474352) and the Basic Research Plan of Natural Science in Shaanxi Province, China (Grant No. 2016JZ020).

Database:Compendex
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<140>

Accession number:20181004853707
Title:Speckle-correlation imaging through scattering media with hybrid bispectrum-iteration algorithm
Authors:Zhou, Meiling (1, 2, 3); Singh, Alok Kumar (1); Pedrini, Giancarlo (1); Osten, Wolfgang (1); Min, Junwei (2); Yao, Baoli (2)
Author affiliation:(1) University of Stuttgart, Institut für Technische Optik ITO, Stuttgart, Germany; (2) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (3) University of Chinese Academy of Sciences, Beijing, China
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:12
Issue date:December 1, 2017
Publication year:2017
Article number:123102
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:We present an improved iteration algorithm for speckle-correlation imaging through scattering media. We employ an approximate solution obtained from a bispectrum-analysis method as the initial condition of the iterative process. This method avoids several different runs performed with different random initial conditions in the traditional iteration algorithm and reduces the execution time in comparison with the conventional bispectrum-analysis method. Therefore, we obtain a balance between image quality and reconstruction speed. The feasibility of the proposed method is proved by the experimental results. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:25
Main heading:Iterative methods
Controlled terms:Speckle
Uncontrolled terms:Approximate solution - Bispectrum analysis - initial input - Iteration algorithms - Iterative algorithm - Random initial conditions - Reconstruction speed - Speckle correlations
Classification code:741.1 Light/Optics - 921.6 Numerical Methods
DOI:10.1117/1.OE.56.12.123102
Funding details: Number: -, Acronym: -, Sponsor: Universit?t Stuttgart;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61377008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475187, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61405242, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Meiling Zhou is grateful to Chinese Academy of Sciences for supporting her study at the Institut für Technische Optik (ITO), Universit?t Stuttgart through the Joint Training PhD Program UCAS[2015]42. This research was supported by the Natural Science Foundation of China (NSFC) under Grant Nos. 61377008, 61405242, and 61475187.

Database:Compendex
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<141>

Accession number:20175204584523
Title:SCECam: a spherical compound eye camera for fast location and recognition of objects at a large field of view
Authors:Shi, Chengyong (1, 2); Wang, Yuanyuan (1, 2); Liu, Chenyang (1, 2); Wang, Taisheng (1); Zhang, Hongxin (1); Liao, Wuxia (3); Xu, Zhijun (1); Yu, Weixing (4)
Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888, Dongnanhu Road, Changchun, Jinlin, China; (2) University of the Chinese Academy of Sciences, Beijing; 10039, China; (3) School of Electronic Engineering, Chengdu Technological University, No. 1, Zhongxin Road, Chengdu; 611730, China; (4) Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17, Xinxi Road, Xian; 710119, China
Corresponding author:Yu, Weixing(yuwx@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:26
Issue date:December 25, 2017
Publication year:2017
Pages:32333-32345
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:In recent years, the compound eye imaging system has attracted great attention due to its fascinating optical features such as large field of view (FOV), small volume and high acuity to moving objects. However, it is still a big challenge to fabricate such a whole system due to the mismatch between the spherical compound eye imaging element and the planar imaging sensor. In this work, we demonstrate a kind of hemispherical compound eye camera (SCECam) which analogs the eye of the fruit fly. The SCECam consists of three sub-systems, a hemispherical compound eye, an optical relay system and a commercial CMOS imaging sensor. By introducing an intermediate optical relay system, the curved focal plane after the compound eye can be transformed and projected onto the planar focal plane of the imaging sensor. In this way, the SCECam can realize a large FOV (up to 122.4°) with 4400 ommatidia, which makes it possible to detect and locate fast moving objects at a very fast speed. It is calculated that the recognition speed of the SCECam is two to three orders of magnitude higher than those conventional methods such as the Canny and Log edge-detection methods. 2017 Optical Society of America.
Number of references:28
Main heading:Cameras
Controlled terms:Edge detection - Focusing
Uncontrolled terms:CMOS imaging sensor - Compound-eye camera - Conventional methods - Edge detection methods - Large field of views - Location and recognition - Recognition speed - Three orders of magnitude
Classification code:742.2 Photographic Equipment
DOI:10.1364/OE.25.032333
Funding details: Number: 61361166004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475156, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61475156 and 61361166004).

Database:Compendex
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<142>

Accession number:20173003988115
Title:Efficiency analysis of 808 nm laser diode array under different operating temperatures
Authors:Song, Yun-Fei (1, 2); Wang, Zhen-Fu (1); Li, Te (1); Yang, Guo-Wen (1, 3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Xi'an Lumcore Optoelectronics Technologies Co., Ltd, Xi'an; 710077, China
Corresponding author:Yang, Guo-Wen(yangguowen@opt.ac.cn)
Source title:Wuli Xuebao/Acta Physica Sinica
Abbreviated source title:Wuli Xuebao
Volume:66
Issue:10
Issue date:May 20, 2017
Publication year:2017
Article number:104202
Language:Chinese
ISSN:10003290
CODEN:WLHPAR
Document type:Journal article (JA)
Publisher:Institute of Physics, Chinese Academy of Sciences
Abstract:The 808 nm high-efficiency laser diodes have many advantages, such as high output power, high reliabilities, compact sizes, which are widely used in many areas, such as industry, communication, science, medicine and biology. In order to improve the power conversion efficiencies of 808 nm laser diodes, the following requirements must be considered, such as loss of joule heating, loss by the carrier leakage, spontaneous radiation loss below the threshold current, loss by interface voltage defect, internal losses including free-carrier absorption loss and scattering loss. These losses above are closely related to the operating temperature of laser diode. In this paper, power conversion efficiency analysis is demonstrated from the aspects of the output power, threshold current, slope efficiency, voltage, and series resistance at different temperatures.. This is the first time that the detailed study has been carried out under various temperatures (up to the lowest temperature of -40℃). And the detailed study above can be of benefit to designing the wafer epitaxial structure. High-power 808 nm laser diode arrays are mounted on conduction cooled heatsinks. And the laser chips have 47 emitters with 50% in fill factor, 100 μm stripe in width and 1.5 mm in cavity length. The asymmetric broad waveguide epitaxial structure with lower absorption loss in p-type waveguide and cladding layer is designed in order to reduce the internal losses. The device performances are measured under operating temperatures ranging from -40℃ to 25℃ including the output power, threshold current, slope efficiency, series resistance, voltage, etc. Then the power conversion efficiency of 808 nm laser diode arrays are demonstrated from the output characteristics at different operating temperatures. With temperature decreasing, the series resistance gradually increases. The loss of joule heating ratio rises from 7.8% to 10.3%. In that case, the high series resistance is the major factor to prevent the efficiency from further improving at a low temperature of -40℃. As temperature decreases from 25℃ to -40℃, the carrier leakage ratio is reduced from 16.6% to 3.1%, the carrier leakage is the dominant factor for increasing efficiency, which means that it is necessary to optimize the epitaxial structure in order to reduce the carrier leakage at the room temperature. Comparing the two different work temperatures from -30℃ to -40℃, the carrier leakage ratio only changes 0.1%, which implies that the carrier leakage could be ignored under the low temperature. Meanwhile, as temperature decreases from 25℃ to -40℃, the power conversion efficiency increases from 56.7% to 66.8%. 2017 Chinese Physical Society.
Number of references:19
Main heading:Efficiency
Controlled terms:Conversion efficiency - Diodes - Electric resistance - Joule heating - Semiconductor lasers - Temperature - Waveguides
Uncontrolled terms:Free carrier absorption - High series resistances - High-efficiency lasers - Laser chips - Operating temperature - Output characteristics - Power conversion efficiencies - Spontaneous radiation
Classification code:525.5 Energy Conversion Issues - 641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena - 714.3 Waveguides - 744.4.1 Semiconductor Lasers - 913.1 Production Engineering
Numerical data indexing:Percentage 1.00e-01%, Percentage 1.66e+01% to 3.10e+00%, Percentage 5.00e+01%, Percentage 5.67e+01% to 6.68e+01%, Percentage 7.80e+00% to 1.03e+01%, Size 1.00e-04m, Size 1.50e-03m, Size 8.08e-07m
DOI:10.7498/aps.66.104202
Funding details: Number: Y429941233, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Project supported by the National Natural Science Foundation of China (Grant No. 61504167) and the "100 Talents Project" of Chinese Academy of Sciences, China (Grant No. Y429941233).

Database:Compendex
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<143>

Accession number:20174904498761
Title:Graphene oxide-COOH as a new saturable absorber for both Q-switching and mode-locking fiber lasers
Authors:Zhao, Fengyan (1, 2); Wang, Yishan (1); Wang, Yonggang (3); Wang, Hushan (1, 2); Cai, Yajun (1, 2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China
Corresponding author:Wang, Yishan(yshwang@opt.ac.cn)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:15
Issue:10
Issue date:October 10, 2017
Publication year:2017
Article number:101402
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Graphene oxide carboxylic acid (COOH), a novel two-dimensional (2D) layered material with its unique optical and electronic properties, is discovered to exhibit the saturation of optical absorption under laser illumination. Applying the liquid-phase exfoliation method, we prepare graphene oxide-COOH dispersions with deionized water and fabricate graphene oxide-COOH polyvinyl alcohol polymer composite film. We further obtain stable Q-switching pulse and mode-locked laser operation with a 22.7 MHz repetition rate and a 1.5 ps pulse duration by incorporating the graphene oxide-COOH-based saturable absorbers into the all-fiber erbium-doped fiber laser cavity. The experimental results show that the proposed graphene oxide-COOH material can act as an effective absorber for pulsed fiber lasers, which demonstrate potential applications in the area of ultrafast optics. 2017 Chinese Optics Letters.
Number of references:31
Main heading:Graphene
Controlled terms:Composite films - Deionized water - Dispersions - Electronic properties - Fiber lasers - Fibers - Light absorption - Locks (fasteners) - Mode-locked fiber lasers - Pulse repetition rate - Pulsed lasers - Q switched lasers - Q switching - Saturable absorbers - Semiconductor quantum wells
Uncontrolled terms:Erbium doped fiber laser - Laser illumination - Layered material - Mode-locked laser operation - Optical and electronic properties - Pulsed fiber lasers - Q-switching and mode-locking - Two Dimensional (2 D)
Classification code:445.1 Water Treatment Techniques - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 744 Lasers - 761 Nanotechnology - 804 Chemical Products Generally - 951 Materials Science
Numerical data indexing:Frequency 2.27e+07Hz, Time 1.50e-12s
DOI:10.3788/COL201715.101402
Funding details: Number: -, Acronym: SAFEA, Sponsor: State Administration of Foreign Experts Affairs;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61690222, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China (No. 61690222) and the CAS/ SAFEA international Partnership Program for creative Research Teams.

Database:Compendex
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<144>

Accession number:20173003968760
Title:Development of 2.5 THz suspended porous microstructured fiber based on cyclic-olefin copolymer
Authors:Chen, Qi (1); Zhu, Wenjing (1); Kong, Depeng (2); He, Xiaoyang (1); Li, Bo (1); Miao, Jing (2); Luo, Zhenfei (3); Zhou, Xun (3); Yang, Chun (1); Zhang, Jian (1)
Author affiliation:(1) Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang; 621999, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, 710119, China; (3) Research Center of Laser Fusion, China Academy of Engineering Physics, Chengdu; 610041, China
Corresponding author:Li, Bo(libocaepiee@163.com)
Source title:Optik
Abbreviated source title:Optik
Volume:145
Issue date:September 2017
Publication year:2017
Pages:56-60
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:Efficient transmission of terahertz (THz) wave is very important in the development of THz technology. Polymer microstructured fiber is ideal in THz waveguide transmission for its advantages of low loss, low dispersion and good flexibility to bend. Based on the full vector finite element method, a suspended porous microstructured fiber with the operating frequency of 2.5 THz was designed. Fiber samples made of cyclic-olefin copolymer were fabricated, and their transmission performances were measured by using the CO2pump laser THz source. The measured minimum loss is 0.17 dB/cm and average loss is about 0.5 dB/cm. The fluctuation of transmission loss is less than 5% when the fiber is bent from 0° to 90°, showing good flexibility of bending. The measured mode field distributions of the output tips show that the THz wave propagates with fundamental mode, and the energy is well confined in the core of the fiber. 2017 Elsevier GmbH
Number of references:18
Main heading:Terahertz waves
Controlled terms:Fibers - Finite element method - Microstructure - Olefins - Pumping (laser)
Uncontrolled terms:Cyclic Olefin Copolymers - Full vector finite element methods - Fundamental modes - Microstructured fibers - Operating frequency - Suspended porous - Tera Hertz - Transmission performance
Classification code:711 Electromagnetic Waves - 744.1 Lasers, General - 804.1 Organic Compounds - 921.6 Numerical Methods - 951 Materials Science
Numerical data indexing:Percentage 5.00e+00%
DOI:10.1016/j.ijleo.2017.06.124
Funding details: Number: -, Acronym: CACMS, Sponsor: China Academy of Chinese Medical Sciences;Number: CAEPTHZ201307, Acronym: -, Sponsor: China Academy of Engineering Physics THz Science and Technology Foundation;Number: 11504416, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is financially supported by the National Natural Science Foundation of China (No. 11504416), China Academy of Engineering Physics THz Science and Technology Foundation under the Grant No. CAEPTHZ201307, and China Academy of Science ?Light of West China? Program (Title: Novel polymer microstructured graded-index terahertz fiber).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<145>

Accession number:20172603861820
Title:Graphene on meta-surface for superresolution optical imaging with a sub-10 nm resolution
Authors:Cao, Shun (1, 2); Wang, Taisheng (1); Sun, Qiang (1); Hu, Bingliang (3); Levy, Uriel (4); Yu, Weixing (3)
Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Chinese Academy of Sciences, No.3888, Dongnanhu Road, Changchun, Jilin, China; (2) University of the Chinese Academy of Sciences, Beijing; 10039, China; (3) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17, Xinxi Road, Xian; 710119, China; (4) Department of Applied Physics, Benin School of Engineering and Computer Science, Hebrew University of Jerusalem, Jerusalem; 91904, Israel
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:13
Issue date:June 26, 2017
Publication year:2017
Pages:14494-14503
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Nowadays, wide-field of view plasmonic structured illumination method (WFPSIM) has been extensively studied and experimentally demonstrated in biological researches. Normally, noble metal structures are used in traditional WFPSIM to support ultrahigh wave-vector of SPs and an imaging resolution enhancement of 3-4 folds can be achieved. To further improve the imaging resolution of WFPSIM, we hereby propose a widefield optical nanoimaging method based on a hybrid graphene on meta-surface structure (GMS) model. It is found that an ultra-high wave-vector of graphene SPs can be excited by a metallic nanoslits array with localized surface plasmon enhancement. As a result, a standing wave surface plasmons (SW-SPs) interference pattern with a period of 11 nm for a 980 nm incident wavelength can be obtained. The potential application of the GMS for wide-field of view super-resolution imaging is discussed followed by simulation results which show that an imaging resolution of sub-10 nm can be achieved. The demonstrated method paves a new route for wide field optical nanoimaging, with applications e.g. in biological research to study biological processes occurring in cell membrane. 2017 Optical Society of America.
Number of references:54
Main heading:Graphene
Controlled terms:Cytology - Optical resolving power - Plasmonics - Precious metals - Surface plasmons
Uncontrolled terms:Biological research - Imaging resolutions - Incident wavelength - Interference patterns - Localized surface plasmon - Structured illumination method - Super resolution imaging - Wide field of view
Classification code:461.2 Biological Materials and Tissue Engineering - 547.1 Precious Metals - 741.1 Light/Optics - 761 Nanotechnology - 804 Chemical Products Generally
Numerical data indexing:Size 1.10e-08m, Size 9.80e-07m
DOI:10.1364/OE.25.014494
Funding details: Number: 61475156, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61361166004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61361166004, 61475156)

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<146>

Accession number:20173404075756
Title:Denoising algorithm of pulsar signal based on EMD with kurtosis test window
Authors:Wang, Lu (1); Li, Jianxun (1, 2); He, Tingting (1)
Author affiliation:(1) School of Automation and Information Engineering, Xi'an University of Technology, Xi'an; 710048, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics
Abbreviated source title:Xi Tong Cheng Yu Dian Zi Ji Shu/Syst Eng Electron
Volume:39
Issue:6
Issue date:June 1, 2017
Publication year:2017
Pages:1208-1214
Language:Chinese
ISSN:1001506X
CODEN:XGYDEM
Document type:Journal article (JA)
Publisher:Chinese Institute of Electronics
Abstract:For the problem that pulsar signal and noise are aliasing on the intrinsic mode functions (IMF) during the empirical mode decomposition (EMD), a denoising method based on EMD with kurtosis test window is proposed. Firstly, the starting point for IMF refactoring is calculated by auto-correlation and cross-correlation. On that basis, the left and the right endpoints of the pulse part of signal from the former two IMFs of the starting point for refactoring are acquired by the local kurtosis test. Finally, the adaptive threshold method is used to remove noise and improve signal quality. The experimental results show that, compared with the other five methods, the proposed method has higher denoising performance, which can effectively eliminate the noises and retain the details in pulsar signal. 2017, Editorial Office of Systems Engineering and Electronics. All right reserved.
Number of references:16
Main heading:Time domain analysis
Controlled terms:Higher order statistics - Pulsars - Signal denoising
Uncontrolled terms:Adaptive threshold method - Adaptive thresholds - Cross correlations - De-noising algorithm - Denoising methods - Empirical Mode Decomposition - Intrinsic Mode functions - Time domain windowing
Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 716.1 Information Theory and Signal Processing - 921 Mathematics - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1001-506X.2017.06.04

Database:Compendex
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<147>

Accession number:20172003675753
Title:Numerical investigation of a microfiberplane-grating composite optical waveguide for gas refractive index sensing
Authors:Ma, Chengju (1); Ren, Liyong (2); Guo, Wenge (1); Fu, Haiwei (1); Xu, Yiping (3); Liu, Yinggang (1); Wen, Jin (1)
Author affiliation:(1) School of Science, Xi'an Shiyou University, Xi'an; 710065, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou; 434023, China
Corresponding author:Ma, Chengju(chengjuma@xsyu.edu.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:56
Issue:14
Issue date:May 10, 2017
Publication year:2017
Pages:3984-3988
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:In this paper, we propose a microfiber-plane-grating composite optical waveguide (MPGCOW), which is formed by immobilizing a tapered microfiber on the surface of a plane grating with one defect, for gas refractive index (RI) sensing. Its optical properties and gas RI sensing properties are investigated by the finite difference time domain method. Results show that the MPGCOW has a photonic stop band and is very sensitive to the ambient gas RI variation. The largest gas RI sensing sensitivity of 486.67 nm/RIU and detection limit of 2 × 10-6are obtained by immersing the structure in the mixture gas of N2and He with various mixture ratios. 2017 Optical Society of America.
Number of references:19
Main heading:Refractive index
Controlled terms:Finite difference time domain method - Gases - Mixtures - Optical waveguides - Surface defects - Time domain analysis
Uncontrolled terms:Composite optical waveguides - Detection limits - Gas refractive index - Mixture ratio - Numerical investigations - Photonic stop band - Plane grating - Sensing property
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 921 Mathematics - 951 Materials Science
DOI:10.1364/AO.56.003984
Funding details: Number: SKLST201612, Acronym: -, Sponsor: -;Number: 2016JQ6051, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 2015BS01, Acronym: -, Sponsor: Doctoral Scientific Research Start-up Foundation from Henan University of Technology;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505160, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61605018, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 15JK1578, Acronym: -, Sponsor: Education Department of Shaanxi Province;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61275149, 61505160, 61605018); Scientific Research Program Funded by Shaanxi Provincial Education Department (15JK1578); Natural Science Foundation of Shaanxi Province (2016JQ6051); Doctoral Scientific Research Startup Foundation of Xi'an Shiyou University (2015BS01); Open Research Fund of State Key Laboratory of Transient Optics and Photonics (SKLST201612); Students Research Training Program of Xi'an Shiyou University.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<148>

Accession number:20172403756324
Title:Chiral long-period gratings: Fabrication, highly sensitive torsion sensing, and tunable single-band filtering
Authors:Kong, Xudong (1, 2); Ren, Kaili (1, 2); Ren, Liyong (1); Liang, Jian (1, 2); Ju, Haijuan (1, 2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Ren, Liyong(renliy@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:56
Issue:16
Issue date:June 1, 2017
Publication year:2017
Pages:4702-4707
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A promising technology for fabricating chiral long-period gratings (CLPGs) is demonstrated using a commercial fusion splicer. The key aspect of this technology is the incorporation of a fully automatic program we designed for the fusion splicer. High-quality CLPGs are successfully fabricated from single-mode fibers, which have very flat surfaces and low insertion loss. We also investigate the tuning characteristics of the transmission spectrum with the mechanical twist rate in CLPGs for torsion sensing application. The torsion sensitivity is improved and the shift in resonance wavelength versus the mechanical twist rate shows an almost perfect linear relationship. In addition, by choosing appropriate fabrication parameters, the fabricated CLPGs can be used as tunable single-band-rejection filters in a broad wavelength range. 2017 Optical Society of America.
Number of references:25
Main heading:Fabrication
Controlled terms:Fiber optic sensors - Notch filters - Single mode fibers - Torsional stress
Uncontrolled terms:Automatic programs - Fabrication parameters - Linear relationships - Long Period Gratings - Low insertion loss - Resonance wavelengths - Sensing applications - Transmission spectrums
Classification code:703.2 Electric Filters - 741.1.2 Fiber Optics
DOI:10.1364/AO.56.004702
Funding details: Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61275149, 61505246, 61535015).

Database:Compendex
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<149>

Accession number:20173104014252
Title:Optimization Design and Test for the Front Frame of a Large Off-axis TMA Space Camera
Authors:Wei, Lei (1, 2); Zhang, Lei (1, 3); Xie, Peng (1); Chen, Su (4)
Author affiliation:(1) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China; (2) University of Chinese Academy of Sciences, Beijing; 100039, China; (3) Chang Guang Satellite Technology LTD. Co, Changchun; 130000, China; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:5
Issue date:May 1, 2017
Publication year:2017
Article number:0522001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:To guarantee the high stability and high precision of an off-axis thee-mirror optical system space camera, a integration front frame structure was designed to support the second mirror and folded mirror according to the characteristics of the same height of second mirror and folded mirror in optical axis direction, and a topology optimization method based on constraint mode and free mode was proposed to optimize the front frame structure. Then, the integrated structure was assembled into the entire camera after optimization, and the finite element analysis of static was carried out. The results show that the camera maintains excellent static performance with the optical tilt between the primary mirror and secondary mirror being less than 9″ and the optical tilt between the primary mirror and fold mirror being less than 22.4″, the optical eccentricity between the primary mirror and secondary mirror being less than 0.021 mm, meeting the tolerance requirement of system. By free modal analysis and test to the integrated front frame structure, the results verify the correctness of the design method. The proposed topology optimization method can efficient avoid the defect of topology optimization based on constraint modal frequency that there is no relationship between the constraint points. It can provide reference for design the space camera with high-resolution and wide field. 2017, Science Press. All right reserved.
Number of references:14
Main heading:Optical testing
Controlled terms:Cameras - Design - Finite element method - Mirrors - Modal analysis - Optical systems - Shape optimization - Structural frames - Topology
Uncontrolled terms:Front frame - Integrated structure - Modal test - Optimization design - Space cameras - Static performance - Tolerance requirement - Topology Optimization Method
Classification code:408.2 Structural Members and Shapes - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 921 Mathematics
Numerical data indexing:Size 2.10e-05m
DOI:10.3788/gzxb20174605.0522001
Funding details: Number: 2016YFB0500904, Acronym: -, Sponsor: -;Number: 41501383, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (No.41501383) and National Key Research and Development Plan of Ministry of Science and Technology(No.2016YFB0500904).

Database:Compendex
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<150>

Accession number:20171203489550
Title:Several nanosecond Nd:YVO4lasers Q-switched by two dimensional materials: Tungsten disulfide, molybdenum disulfide, and black phosphorous
Authors:Liu, Huan (1, 2); Sun, Zhe (1); Wang, Xi (1, 2); Wang, Yonggang (3); Cheng, Guanghua (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 10049, China; (3) Shaanxi Normal University, Xi'an; 710119, China
Corresponding author:Cheng, Guanghua(gcheng@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:6
Issue date:March 20, 2017
Publication year:2017
Pages:6244-6252
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Graphene-like two-dimensional (2D) materials have shown remarkable broadband saturable absorption properties. These materials were successfully applied into mode locked lasers to generate laser pulses with the pulse duration from picosecond to femtosecond. However, these novel materials have not shown good performance as far in another important aspect: Q-switched lasers. Solid-state or fiber lasers Q-switched with broadband absorbers usually generated pulses of one hundred nanosecond to several microsecond, which show weak competitiveness compared to traditional absorbers such as Cr: YAG and semiconductor saturable absorption mirror (SESAM). In this paper we utilized BP, WS2and MoS2solutions as saturable absorbers (SAs) to construct the passively Q-switched Nd:YVO4lasers. The pulse durations as short as 2.86 nanosecond was obtained. To the best of our knowledge, it was the first report that the pulse durations approached several nanosecond level in Q-switched lasers with liquid-form of BP, WS2and MoS2SAs. 2017 Optical Society of America.
Number of references:48
Main heading:Semiconductor saturable absorber mirrors
Controlled terms:Fiber lasers - Laser mirrors - Layered semiconductors - Liquid lasers - Molybdenum compounds - Neodymium compounds - Phosphorus - Q switched lasers - Q switching - Semiconductor lasers - Semiconductor quantum wells - Solid state lasers - Sulfur compounds - Tungsten compounds - Yttrium aluminum garnet
Uncontrolled terms:Broadband absorbers - Molybdenum disulfide - Passively Q-switched - Saturable absorption - Semiconductor saturable absorption mirror - Tungsten disulfide - Two Dimensional (2 D) - Two-dimensional materials
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 744 Lasers - 804 Chemical Products Generally
Numerical data indexing:Time 2.86e-09s
DOI:10.1364/OE.25.006244
Funding details: Number: XAB2015B27, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61378019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:West Young Scholar Foundation of the Chinese Academy of Sciences, (Grant No: XAB2015B27) and the National Natural Science Foundation of China, (Grant No: 61378024, 61378019).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<151>

Accession number:20172703889327
Title:Decoding techniques of single-ring absolute photoelectric shaft encoder
Authors:Su, Xiaogang (1, 2); Hu, Xiaodong (1); Xiao, Maosen (1); Zhang, Xiaodong (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:4
Issue date:April 25, 2017
Publication year:2017
Article number:0411007
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:In comparison with incremental and traditional absolute encoder, the single-ring absolute encoder processes more advantage. And the research of decoding system and algorithm are essential to the single-ring absolute encoder. In order to improve single-ring absolute photoelectric encoder's circuit integration, response speed and accuracy, a decoding system was designed in this paper. Linear CCD was used in this system as the disc image receiving and photoelectric conversion device which also provided the basement of subdivision algorithm. And FPGA was used to achieve circuit control and decoding algorithm. A new decoding algorithm was also proposed in this paper. On the one hand, the coding information was achieved by counting high electrical level of the binaryzation signal of CCD's output. Coding information was obtained by recognition of the disc image and combination of 12-bits coding number. On the other hand, precise value was obtained by calculating the shifting between the centroid of image and virtual center. The centroid of stripe was calculated based on CCD centroid location algorithm. Finally, the value of angle was precisely received from combination of these two values. A prototype of theodolite was developed based on this single-ring absolute encoder decoding system and can reach the accuracy of 2". 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:12
Main heading:Signal encoding
Controlled terms:Decoding - Image coding - Photoelectricity
Uncontrolled terms:Centroid algorithm - Circuit integration - Decoding techniques - Linear CCD - Location algorithms - Photoelectric conversion - Photoelectric encoders - Subdivision algorithms
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing
DOI:10.3788/IRLA201746.0411007

Database:Compendex
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<152>

Accession number:20172803922836
Title:Research on position error of sparse optical system
Authors:Wang, Chenchen (1, 2); Shen, Yang (1, 2); Zou, Gangyi (1, 2); Li, Ruichang (1, 2); Fan, Xuewu (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Wang, Chenchen(wangchenchen@opt.ac.cn)
Source title:Optik
Abbreviated source title:Optik
Volume:144
Issue date:September 2017
Publication year:2017
Pages:191-198
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:The main method to improve the resolution of optical system is to increase the aperture of the optical system, and it is a common method to use the sparse-aperture mirrors to obtain a large aperture primary mirror. The primary mirror of optical system is deployed when it is launched into the orbit, and the deviation between deployed position and design position determines the quality of the optical system. So it is necessary to analyze the position accuracy of segmented mirrors. Sparse-aperture optical system is modeled by optical software Zemax, and by adjusting six degrees of freedom of segmented mirrors can get curves between position error and image quality. The results show that different positions of segmented mirrors can produce different wave-front when they have same position error. Moving along the Z axis, the inner mirrors influence most while the outer ones influence smallest; tilt along the X axis, middle ones have maximum wave-front aberration while the outer ones produce minimum wave-front aberration. When tilt along Y axis, middle segmented mirrors have the smallest wave-front aberration and outer ones have maximum. Two methods are used to distribute the wave-front aberration onto each segmented mirror. One is that according to the relationship curves, distribute the position error to each segmented mirror alone. Another is that each one has same position errors. The final result shows that the former method has a more relax position error when generates the same wave-front aberration. 2017 Elsevier GmbH
Number of references:14
Main heading:Optical systems
Controlled terms:Aberrations - Degrees of freedom (mechanics) - Errors - Image analysis - Mirrors - Modulation - Optical design - Wavefronts
Uncontrolled terms:Geometric optical designs - Optical software - Position accuracy - Primary mirrors - Segmented mirror - Six degrees of freedom - Sparse aperture - Wavefront aberrations
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.1 Mechanics
DOI:10.1016/j.ijleo.2017.06.082

Database:Compendex
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<153>

Accession number:20172803941563
Title:Effects of doping B2O3on the defects-state in SiO2-containing phosphate based glasses
Authors:He, Quanlong (1, 2); Wang, Pengfei (1); Sun, Mengya (1, 2); Lu, Min (1); Peng, And Bo (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (2) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China
Source title:Optical Materials Express
Abbreviated source title:Opt. Mater. Express
Volume:7
Issue:8
Issue date:2017
Publication year:2017
Pages:2697-2705
Language:English
E-ISSN:21593930
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:The effects of doping B2O3on the defects and their induced anti-radiation performance change of the multicomponent phosphate glasses were studied in this work. The introduction of B2O3reduces the connectivity of phosphate chains and thus increases the concentration of PO3-EC and PO4-EC defects in the phosphate glass network that have large absorption in the high-energy region. Meanwhile, B2O3can improve the oxidizability of those glasses at the same melting temperature under which Fe2+ions will be more easily oxidized to Fe3+ions. However, the addition of B2O3in terms of H3BO3, as it reaches up to 7.5 wt%, could enhance the gamma radiation resistance of the phosphate glasses, in this case B2O3, and enter the phosphate glass network in the form of B5O8 units. The units enhanced the connectivity of the long phosphate chains, and thus reduced the concentration of PO3-EC and PO4-EC defects in phosphate glasses. 2017 Optical Society of America.
Number of references:21
Main heading:Glass
Controlled terms:Chains - Defects - Radiation effects - Silica
Uncontrolled terms:Anti radiations - High energy regions - Multicomponents - Oxidizability - Phosphate based glass - Phosphate chain - Phosphate glass - Radiation resistance
Classification code:602.1 Mechanical Drives - 812.3 Glass - 951 Materials Science
DOI:10.1364/OME.7.002697
Funding details: Number: 2017446, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: 2015JM6315, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: XAB2016A08, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61307046, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC No.61307046); Natural Science Basic Research Project in Shaanxi Province (2015JM6315); West Young Scholars Program of the Chinese Academy of Sciences (XAB2016A08); and Youth Innovation Promotion Association CAS (2017446), China.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<154>

Accession number:20171703607535
Title:Automatic seamless image mosaic method based on SIFT features
Authors:Liu, Meiying (1, 2); Wen, Desheng (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No. 17 Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing; 100049, China
Corresponding author:Liu, Meiying(liumeiying@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:1025636
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:An automatic seamless image mosaic method based on SIFT features is proposed. First a scale-invariant feature extracting algorithm SIFT is used for feature extraction and matching, which gains sub-pixel precision for features extraction. Then, the transforming matrix H is computed with improved PROSAC algorithm, compared with RANSAC algorithm,the calculate efficiency is advanced, and the number of the inliers are more. Then the transforming matrix H is purify with LM algorithm. And finally image mosaic is completed with smoothing algorithm. The method implements automatically and avoids the disadvantages of traditional image mosaic method under different scale and illumination conditions. Experimental results show the image mosaic effect is wonderful and the algorithm is stable very much. It is high valuable in practice. 2017 SPIE.
Number of references:10
Main heading:Photonics
Controlled terms:Extraction
Uncontrolled terms:Feature extraction and matching - Features extraction - Illumination conditions - Image mosaic - Scale invariant features - Seamless image mosaic - SIFT Feature - Smoothing algorithms
Classification code:741.1 Light/Optics - 802.3 Chemical Operations
DOI:10.1117/12.2257792
Funding details: Number: 61107008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61105017, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work has been supported by: (1) National Natural Science Foundation of China under the contract No.61107008 and No.61105017.

Database:Compendex
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<155>

Accession number:20180404670972
Title:A star image registration algorithm based on joint feature matching
Authors:Li, Zhao (1, 2); Wen, Yan (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 10049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:1046212
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:With the amount of space debris increasing accordingly with human activities in near space, the threat of space debris to space missions raises the concern of surveillance of these malicious targets. Space target detection based on optical image is a feasible and effective solution for monitoring these malicious targets. However, as the observation platform is nonestationary, image obtained from the telescope need registration for further operation. In this paper, a star image registration algorithm based on joint feature matching is proposed. The star images are firstly denoised by filtering system. Then reference stars are preselected and their features are constructed. By matching the extracted features, a pool of star pairs is established. Transform parameters are derived from the locations of these matched pairs. Experimental results have validated the capability of our algorithm in pixel accurate star image registration. 2017 SPIE.
Number of references:10
Main heading:Stars
Controlled terms:Geometrical optics - Image registration - Space debris
Uncontrolled terms:Effective solution - Feature construction - Feature matching - Filtering systems - Human activities - Reference Star - Registration - Star images
Classification code:656.1 Space Flight - 657.2 Extraterrestrial Physics and Stellar Phenomena - 723.2 Data Processing and Image Processing - 741.1 Light/Optics
DOI:10.1117/12.2283215

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<156>

Accession number:20175104560054
Title:Removal functions of different polishing heads worked in planet motion model
Authors:Yao, Yong-Sheng (1); Ma, Zhen (1); Xu, Liang (1); Ding, Jiao-Teng (1); Wang, Yong-Jie (1); Shen, Le (1); Jiang, Bo (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Yao, Yong-Sheng(ganglangyao@126.com)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:10
Issue date:October 1, 2017
Publication year:2017
Pages:2706-2713
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:To obtain Gaussian-like removal function in optical manufacturing process, a convenient method to derive the removal functions of various complicated polishing heads by integrating the rotation removal function along the revolution trajectory was proposed based on the traditional planet polising theory. When the speed ratio was greater than 10,the removal function curve of a solid disk by the proposed method was very close to the result by the traditional method, which verifies the correctness of the proposed method. The proposed method was used to derive polishing removal functions of different polishing heads. By computer simulation, it shows that type II petal polishing head gets a better removal function curve when the eccentricity ratio is 0.4.Finally, the type II petal polishing head was polished, and the results indicate that when the eccentricity ratio was 0.4 and the speed ratio is 10,the test and simulation results are consistent with each other and they are all close to the Gaussian curve. These test result verifies the correctness of the proposed method again. 2017, Science Press. All right reserved.
Number of references:19
Main heading:Polishing
Controlled terms:Gaussian distribution
Uncontrolled terms:Eccentricity ratios - Gaussian curves - Motion modeling - Optical manufacturing - Polishing head - Removal function - Solid disks - Speed ratio
Classification code:604.2 Machining Operations - 922.1 Probability Theory
DOI:10.3788/OPE.20172510.2706

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<157>

Accession number:20180404671166
Title:A self-Adaptive remote sensing image enhancement method based on gradient and intensity histogram
Authors:Lu, Zhuanli (1, 2); Liu, Jiahang (1); Chen, Tieqiao (1, 2); Kang, Chaomeng (1, 2); Yu, Kai (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104623I
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:It is crucial to enhance the lower contrast Remote remote sensing images to obtain more details information for further remote sensing image processing and application. In this letter here, a self-Adaptive remote sensing image contrast enhancement method has been proposed. The method is an improvement, based on gradient and intensity histogram equalization (GIHE) by using the advantage of histogram compaction transform (HCT). Firstly, we obtained two enhanced images by GIHE and HCT, respectively. Then furthermore, the two enhaceed images were normalized with a self-Adaptive paremeter, which based on standard deviation and mean of the gradient. Finally and then, we modified the normalized image by dual-gamma function for preserving the local details. It's evidenced that the proposed method have more richer details and better subjective visual quality, comparedwith the other methods. The experimental results depicted in terms of PSNR, MAE and Q. Comparing with the other methods, the proposed method had richer details and better subjective visual quality. 2017 SPIE.
Number of references:10
Main heading:Image enhancement
Controlled terms:Adaptive optics - Compaction - Equalizers - Graphic methods - Optical data processing - Remote sensing
Uncontrolled terms:Contrast Enhancement - Dual-gamma modification - Histogram compaction transform (HCT) - Intensity histograms - Remote sensing images
Classification code:713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 723.2 Data Processing and Image Processing - 741.1 Light/Optics
DOI:10.1117/12.2285168
Funding details:
Funding text:This work was supported in part by the National Key Research and Development Program through Grant

Database:Compendex
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<158>

Accession number:20173904210171
Title:Multifeature anisotropic orthogonal Gaussian process for automatic age estimation
Authors:Li, Zhifeng (1); Gong, Dihong (2); Zhu, Kai (3); Tao, Dacheng (4, 5); Li, Xuelong (6)
Author affiliation:(1) Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; (2) Guangdong Provincial Key Laboratory of Computer Vision and Virtual Reality Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; (3) Department of Information Engineering, Chinese University of Hong Kong, Hong Kong; (4) UBTECH Sydney Artificial Intelligence Centre, J12, 6 Cleveland St, Darlington; NSW; 2008, Australia; (5) School of Information Technologies, Faculty of Engineering and Information Technologies, University of Sydney, J12, 6 Cleveland St, Darlington; NSW; 2008, Australia; (6) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Source title:ACM Transactions on Intelligent Systems and Technology
Abbreviated source title:ACM Trans. Intell. Syst. Technolog.
Volume:9
Issue:1
Issue date:August 2017
Publication year:2017
Article number:2
Language:English
ISSN:21576904
E-ISSN:21576912
Document type:Journal article (JA)
Publisher:Association for Computing Machinery
Abstract:Automatic age estimation is an important yet challenging problem. It has many promising applications in social media. Of the existing age estimation algorithms, the personalized approaches are among the most popular ones. However, most person-specific approaches rely heavily on the availability of training images across different ages for a single subject, which is usually difficult to satisfy in practical application of age estimation. To address this limitation,we first propose a new model called Orthogonal Gaussian Process (OGP), which is not restricted by the number of training samples per person. In addition, without sacrifice of discriminative power, OGP is much more computationally efficient than the standard Gaussian Process. Based on OGP, we then develop an effective age estimation approach, namely anisotropic OGP (A-OGP), to further reduce the estimation error. A-OGP is based on an anisotropic noise level learning scheme that contributes to better age estimation performance. To finally optimize the performance of age estimation, we propose a multifeature A-OGP fusion framework that uses multiple features combined with a random sampling method in the feature space. Extensive experiments on several public domain face aging datasets (FG-NET, MORPH Album1, and MORPH Album 2) are conducted to demonstrate the state-of-the-art estimation accuracy of our new algorithms. 2017 ACM.
Number of references:49
Main heading:Gaussian distribution
Controlled terms:Anisotropy - Gaussian noise (electronic) - Human computer interaction
Uncontrolled terms:Age estimation - Anisotropic noise - Computationally efficient - Discriminative power - Face images - Gaussian Processes - Multiple features - Random sampling method
Classification code:922.1 Probability Theory - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.1145/3090311
Funding details: Number: -, Acronym: -, Sponsor: University of Sydney;Number: 2014A030313688, Acronym: -, Sponsor: Natural Science Foundation of Guangdong Province;Number: -, Acronym: CUHK, Sponsor: Chinese University of Hong Kong;Number: FT-130101457, Acronym: ARC, Sponsor: Australian Research Council;Number: LP-150100671, Acronym: ARC, Sponsor: Australian Research Council;Number: DP-140102164, Acronym: ARC, Sponsor: Australian Research Council;Number: 172644KYSB20160033, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: ACM, Sponsor: Anacostia Community Museum;
Funding text:This work was funded by the External Cooperation Program of BIC, the Chinese Academy of Sciences (172644KYSB20160033), Australian Research Council Projects (FT-130101457, DP-140102164, and LP-150100671), and Natural Science Foundation of Guangdong Province (2014A030313688). Authors’ addresses: Z. Li, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; email: zhifeng.li@siat.ac.cn; D. Gong, Guangdong Provincial Key Laboratory of Computer Vision and Virtual Reality Technology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; email: gongd@ufl.edu; K. Zhu, Department of Information Engineering, Chinese University of Hong Kong, Hong Kong; email: zk013@ie.cuhk.edu.hk; D. Tao, UBTECH Sydney Artificial Intelligence Centre and the School of Information Technologies in the Faculty of Engineering and Information Technologies at The University of Sydney, J12, 6 Cleveland St, Darlington, NSW 2008, Australia; email: dacheng.tao@sydney.edu.au; X. Li, Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, Shaanxi, P. R. China; email: xuelong_li@opt.ac.cn. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies show this notice on the first page or initial screen of a display along with the full citation. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, to redistribute to lists, or to use any component of this work in other works requires prior specific permission and/or a fee. Permissions may be requested from Publications Dept., ACM, Inc., 2 Penn Plaza, Suite 701, New York, NY 10121-0701 USA, fax + 1 (212) 869-0481, or permissions@acm.org. ? 2017 ACM 2157-6904/2017/09-ART2 $15.00 https://doi.org/10.1145/3090311

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<159>

Accession number:20174504368492
Title:Characteristis research of diffuser panel in near backscatter measurement system
Authors:Han, Yang (1, 2); He, Junhua (1); Yan, Yadong (1); Wu, Bingjing (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:9
Issue date:September 25, 2017
Publication year:2017
Article number:0917002
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:Based on the analysis of near back scattered light in laser fusion, a method was proposed to collect near back scattered light by using diffuser panel. Based on the analysis of the application scenarios of the diffuser panel, the characteristic of the diffuser panel was presented. A device for measuring the characteristics of diffuser panel was set up. The directional hemispherical reflectance (DHR), bidirectional reflectance distribution function, surface uniformity, vacuum and UV properties were measured and analyzed. The analysis results show that the F4target panel has a high reflectivity close to 0.99, the spectral flatness, the bidirectional reflectance distribution function (BRDF) of approximate cosine distribution, 0.869 6% of the higher surface uniformity, as well as the smaller UV vacuum influence. Therefore, the F4target panel meets the measurement requirements of the near back scattered light in laser inertial confinement fusion (ICF), and it is feasible to use the diffuser panel to collect the near back scattered light. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:12
Main heading:Distribution functions
Controlled terms:Backscattering - Inertial confinement fusion - Light scattering - Reflection
Uncontrolled terms:Application scenario - Backscattered light - Bidirectional reflectance distribution functions - Cosine distributions - Directional hemispherical reflectances - High reflectivity - Measurement system - Surface uniformity
Classification code:741.1 Light/Optics - 922.1 Probability Theory - 932.2.1 Fission and Fusion Reactions
DOI:10.3788/IRLA201746.0917002

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<160>

Accession number:20173504083070
Title:Integrated kerr comb-based reconfigurable transversal differentiator for microwave photonic signal processing
Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Nguyen, Thach G. (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5, 6, 7); Mitchell, Arnan (2); Moss, David J. (1)
Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia; (3) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (4) Xi'an Institute of Optics and Precision Mechanics Precision Mechanics of CAS, Xi'an, China; (5) INSR-énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Moss, David J.(dmoss@swin.edu.au)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F52-IPRSN 2017
Part number:1 of 1
Issue title:Advanced Photonics, IPRSN 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Advanced Photonics, IPRSN 2017
Conference date:July 24, 2017 - July 27, 2017
Conference location:New Orleans, LA, United states
Conference code:136878
Publisher:OSA - The Optical Society
Abstract:An integrated reconfigurable transversal differentiator is achieved based on an integrated nonlinear micro-ring resonator. The RF responses of different orders of differentiation are experimentally characterized. Systems demonstrations for Gaussian input signals are also performed. OSA 2017.
Number of references:8
Page count:3
Main heading:Signal processing
Controlled terms:Optical resonators
Uncontrolled terms:Differentiators - Gaussian inputs - Microring resonator - Microwave Photonics - Reconfigurable
Classification code:716.1 Information Theory and Signal Processing - 741.3 Optical Devices and Systems
DOI:10.1364/IPRSN.2017.IW1A.6

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<161>

Accession number:20180304654848
Title:Rearranging the lenslet array of the compact passive interference imaging system with high resolution
Authors:Liu, Gang (1, 2); Wen, Desheng (1); Song, Zongxi (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi Province; 710119, China; (2) University of Chinese, Academy of Sciences, Beijing; 100039, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10463
Part number:1 of 1
Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation
Issue date:2017
Publication year:2017
Article number:1046310
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614079
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133232
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:With the development of aeronautics and astronautics, higher resolution requirement of the telescope was necessary. However, the increase in resolution of conventional telescope required larger apertures, whose size, weight and power consumption could be prohibitively expensive. This limited the further development of the telescope. This paper introduced a new imaging technology using interference-Compact Passive Interference Imaging Technology with High Resolution, and proposed a rearranging method for the arrangement of the lenslet array to obtain continuously object spatial frequency. 2017 SPIE.
Number of references:8
Main heading:Image resolution
Controlled terms:Earth (planet) - Telescopes
Uncontrolled terms:High resolution - Higher resolution - Imaging technology - Lenslet array - Optical interferometry - Passive interference - Rearranging - Spatial frequency
Classification code:746 Imaging Techniques
DOI:10.1117/12.2283216

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<162>

Accession number:20172003680377
Title:Hardware in-loop system for X-ray pulsar-based navigation and experiments
Authors:Zhang, Dapeng (1); Zheng, Wei (1); Sheng, Lizhi (2); Wang, Yidi (1); Xu, Neng (2)
Author affiliation:(1) College of Aerospace Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an; 710119, China
Corresponding author:Zheng, Wei(zhengwei@nudt.edu.cn)
Source title:Lecture Notes in Electrical Engineering
Abbreviated source title:Lect. Notes Electr. Eng.
Volume:438
Part number:2 of 3
Issue title:China Satellite Navigation Conference, CSNC 2017 Proceedings
Issue date:2017
Publication year:2017
Pages:553-563
Language:English
ISSN:18761100
E-ISSN:18761119
ISBN-13:9789811045905
Document type:Conference article (CA)
Conference name:8th China Satellite Navigation Conference, CSNC 2017
Conference date:May 23, 2017 - May 25, 2017
Conference location:Shanghai, China
Conference code:191589
Publisher:Springer Verlag
Abstract:X-ray pulsar-based navigation uses natural objects, the neutron star, in space as the navigation signal source. The advantages of the method are navigation information is complete, and the reliability and autonomy are high. It is a research hot spot at present both at home and abroad. As a result of the X-ray signal from the pulsars is very weak, it cannot penetrate the thickset atmosphere. In order to validate the pulsar navigation algorithms closer to the real conditions on ground, the special Hardware in-Loop System should be used to do the experiments. This paper adopted the system “Tianshu-II” which is developed by National University of Defense Technology and Xi’an Institute of Optics and Precision Mechanics research institute. A series of X-ray pulsar-based navigation experiments are carried out. Experimental results show that the algorithms are reliable. They are verified to be effective in the hardware-in-the-loop simulation. Springer Nature Singapore Pte Ltd. 2017.
Number of references:10
Main heading:X rays
Controlled terms:Electromagnetic wave emission - Experiments - Hardware - Navigation - Pulsars - Satellite navigation aids - Traction (friction)
Uncontrolled terms:Defense technologies - Hardware in loop - Navigation in formation - Navigation signals - Precision mechanics - Pulsar navigations - Research institutes - X-ray pulsars
Classification code:605 Small Tools and Hardware - 655.2 Satellites - 657.2 Extraterrestrial Physics and Stellar Phenomena - 711 Electromagnetic Waves - 901.3 Engineering Research - 931.1 Mechanics - 932.1 High Energy Physics
DOI:10.1007/978-981-10-4591-2_45

Database:Compendex
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<163>

Accession number:20172403771228
Title:Four-wave mixing photon pair generation statistics for a nonlinear microcavity with chaotic and pulsed excitation
Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Little, Brent E. (3); Chu, Sai T. (4); Moss, David J. (1, 5); Morandotti, Roberto (1, 6, 7)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (4) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong; (5) Center for Microphotonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Kues, Michael(michael.kues@emt.inrs.ca)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F42-CLEO_QELS 2017
Part number:1 of 1
Issue title:CLEO: QELS_Fundamental Science, CLEO_QELS 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:CLEO: QELS_Fundamental Science, CLEO_QELS 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:135898
Publisher:OSA - The Optical Society
Abstract:We characterize four-wave mixing photon pair generation statistics in the chaotic pulsed regime associated with a self-locked nonlinear microcavity excitation scheme, and contrast these statistics against a pulsed actively mode-locked excitation. OSA 2017.
Number of references:4
Page count:2
Main heading:Four wave mixing
Controlled terms:Locks (fasteners) - Microcavities - Photons
Uncontrolled terms:Excitation schemes - Mode-locked - Photon pair generations - Pulsed excitation
Classification code:714 Electronic Components and Tubes - 931.3 Atomic and Molecular Physics
DOI:10.1364/CLEO_QELS.2017.FTu4D.3

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<164>

Accession number:20173404078690
Title:Type II micro-comb based on a filter-driven four wave mixing laser
Authors:Bao, Hualong (1); Cooper, Andrew (1); Chu, Sai T. (2); Moss, Dave J. (3); Morandotti, Roberto (4); Little, Brent E. (5); Peccianti, Marco (1); Pasquazi, Alessia (1)
Author affiliation:(1) Emergent Photonics (Epic) Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong; (3) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (5) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China
Corresponding author:Bao, Hualong(H.Bao@sussex.ac.uk)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F52-IPRSN 2017
Part number:1 of 1
Issue title:Advanced Photonics, IPRSN 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Advanced Photonics, IPRSN 2017
Conference date:July 24, 2017 - July 27, 2017
Conference location:New Orleans, LA, United states
Conference code:136878
Publisher:OSA - The Optical Society
Abstract:We numerically and experimentally demonstrate the generation of Type II micro-combs in a Filter-Driven four wave mixing laser, showing that the generated Type II micro-combs are fully coherent. OSA 2017.
Number of references:6
Page count:3
Main heading:Four wave mixing
Controlled terms:Bandpass filters - Comb filters
Uncontrolled terms:Type II
Classification code:703.2 Electric Filters
DOI:10.1364/IPRSN.2017.IM4A.4

Database:Compendex
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<165>

Accession number:20172803900091
Title:Dimensionality reduction method based on a tensor model
Authors:Yan, Ronghua (1, 2); Peng, Jinye (1, 3); Ma, Dongmei (4); Wen, Desheng (2)
Author affiliation:(1) Northwestern Polytechnical University, School of Electronics and Information, Xian, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, China; (3) Northwest University, School of Information and Technology, Xian, China; (4) Xian Janssen Pharmaceutical Ltd, Xian, China
Corresponding author:Yan, Ronghua(yanronghua@opt.ac.cn)
Source title:Journal of Applied Remote Sensing
Abbreviated source title:J. Appl. Remote Sens.
Volume:11
Issue:2
Issue date:April 1, 2017
Publication year:2017
Article number:025011
Language:English
E-ISSN:19313195
CODEN:JARSC4
Document type:Journal article (JA)
Publisher:SPIE
Abstract:Dimensionality reduction is a preprocessing step for hyperspectral image (HSI) classification. Principal component analysis reduces the spectral dimension and does not utilize the spatial information of an HSI. Both spatial and spectral information are used when an HSI is modeled as a tensor, that is, the noise in the spatial dimension is decreased and the dimension in a spectral dimension is reduced simultaneously. However, this model does not consider factors affecting the spectral signatures of ground objects. This means that further improving classification is very difficult. The authors propose that the spectral signatures of ground objects are the composite result of multiple factors, such as illumination, mixture, atmospheric scattering and radiation, and so on. In addition, these factors are very difficult to distinguish. Therefore, these factors are synthesized as within-class factors. Within-class factors, class factors, and pixels are selected to model a third-order tensor. Experimental results indicate that the classification accuracy of the new method is higher than that of the previous methods. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:19
Main heading:Tensors
Controlled terms:Hyperspectral imaging - Image processing - Principal component analysis - Spectroscopy
Uncontrolled terms:Atmospheric scattering - Classification accuracy - Dimensionality reduction - Dimensionality reduction method - Pre-processing step - Spatial informations - Spectral dimensions - Spectral information
Classification code:921.1 Algebra - 922.2 Mathematical Statistics
DOI:10.1117/1.JRS.11.025011

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<166>

Accession number:20180704784160
Title:Long period fiber grating around the dispersion turning point fabricated with a femtosecond laser
Authors:Shen, Fangcheng (1); Zhou, Kaiming (2, 3); Zhang, Lin (2); Shu, Xuewen (1)
Author affiliation:(1) Wuhan National Laboratory for Optoelectronics and oSchool of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan; 430074, China; (2) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Shu, Xuewen(xshu@hust.edu.cn)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F83-ACPC 2017
Part number:1 of 1
Issue title:Asia Communications and Photonics Conference, ACPC 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:Asia Communications and Photonics Conference, ACPC 2017
Conference date:November 10, 2017 - November 13, 2017
Conference location:Huanshi Dong (City Ring East) Road, Guangzhou, Uangdong, 510064, China
Conference code:139338
Publisher:OSA - The Optical Society
Abstract:Long period fiber grating around the dispersion turning point, which exhibits high sensitivity to measurands such as temperature and refractive index, is fabricated in single mode fiber with a femtosecond laser for the first time. 2017 OSA.
Number of references:5
Page count:3
Main heading:Diffraction gratings
Controlled terms:Dispersion (waves) - Fabrication - Femtosecond lasers - Photonics - Refractive index - Single mode fibers
Uncontrolled terms:High sensitivity - Long period fiber grating - Turning points
Classification code:741 Light, Optics and Optical Devices
DOI:10.1364/ACPC.2017.Su2A.104

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<167>

Accession number:20173304042248
Title:Large aperture lidar receiver optical system based on diffractive primary lens
Authors:Zhu, Jinyi (1, 2); Xie, Yongjun (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:5
Issue date:May 25, 2017
Publication year:2017
Article number:0518001
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:Diffractive optical systems are promising in large aperture lidar receiver applications. The negative dispersion effect on lidar image quality caused by the diffractive primary lens was analyzed. Two chromatic aberration correcting methods, inserting high dispersion glass and adopting Schupmann theory, were discussed. An achromatic system based on Schupmann theory was lightweight, and provided perfect image quality. And the system light transmittance was over 60%. A design of lidar receiver optical system with 1m aperture and 1 mrad max FOV was demonstrated, and the system f/# was 8. The image quality attained diffraction limit approximately. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:22
Main heading:Aberrations
Controlled terms:Diffraction - Dispersions - Image quality - Lenses - Optical design - Optical radar - Optical systems
Uncontrolled terms:Achromatic - Achromatic system - Chromatic aberration - Diffraction limits - Diffractive lens - Diffractive optical systems - Dispersion effect - Light transmittance
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 951 Materials Science
Numerical data indexing:Percentage 6.00e+01%, Size 1.00e+00m
DOI:10.3788/IRLA201746.0518001

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<168>

Accession number:20173804169208
Title:A universal pedestrian's foot-point and head-point recognition with improved motion detection algorithm
Authors:Shi, Liu (1, 2); Liu, Jiahang (1); Yihao, Wang (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, China; (2) University of Chinese Academy of Sciences, Beijing, China
Source title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017
Abbreviated source title:Int. Conf. Image, Vis. Comput., ICIVC
Part number:1 of 1
Issue title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017
Issue date:July 18, 2017
Publication year:2017
Pages:281-287
Article number:7984562
Language:English
ISBN-13:9781509062379
Document type:Conference article (CA)
Conference name:2nd International Conference on Image, Vision and Computing, ICIVC 2017
Conference date:June 2, 2017 - June 4, 2017
Conference location:Chengdu, China
Conference code:129351
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Detecting pedestrians' spatial locations is a key, yet challenging task in video surveillance. From video sequences, we can apply motion detection algorithm to detect the whole pedestrians, and recognize pedestrians' foot-point locations with foot-point recognition method. While we propose a solution to recognize pedestrians' head-point locations for partially occluded pedestrians in complex scenes. Then, a few simple mappings can be used for converting head-point to foot-point and converting 2-D locations to 3-D spatial locations in computer vision. In this paper, we present a pixel-level background sample set motion detection approach based on Self-Balanced SENsitivity SEgmenter, coined SuBSENSE algorithm. Instead of using the same background/foreground segmentation criterion for low and high brightness distribution areas, we use completely different segmentation criterion for low and high brightness, respectively. Besides, for an actual scenario with camouflaged foreground objects, simple color and texture feature could not detect these motion objects. To best address these disadvantages, we introduce normalized color feature and extended local binary similarity pattern (ELBSP) operator by adaptive threshold to segment motion objects for high brightness while providing normalized color feature by perception-inspired confidence interval for high brightness. Due to the diversity of camera gesture in video images, we can't directly gain foot-point and head-point location from the results of motion detection. For foot-point, principal component analysis is employed in getting pedestrian's upright direction and mapping the whole object to this direction. Moreover, color feature, area feature, and position feature are utilized for detecting head-point. Experiments show that it outperforms original motion detection approach and several state-of-the-art methods, and can accurately obtain pedestrians' 2-D locations in real scenarios. 2017 IEEE.
Number of references:15
Main heading:Motion analysis
Controlled terms:Color - Feature extraction - Financial data processing - Image segmentation - Location - Luminance - Mapping - Motion compensation - Object detection - Principal component analysis - Security systems - Signal detection
Uncontrolled terms:Color and texture features - Foot points - Head-point - Motion detection - Recognition methods - Similarity patterns - State-of-the-art methods - Video surveillance
Classification code:405.3 Surveying - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics - 914.1 Accidents and Accident Prevention - 922.2 Mathematical Statistics
DOI:10.1109/ICIVC.2017.7984562

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<169>

Accession number:20161002045137
Title:Modeling Disease Progression via Multisource Multitask Learners: A Case Study with Alzheimer's Disease
Authors:Nie, Liqiang (1); Zhang, Luming (2); Meng, Lei (3); Song, Xuemeng (4); Chang, Xiaojun (5); Li, Xuelong (6)
Author affiliation:(1) School of Computer Science and Technology, Shandong University, Jinan; 250100, China; (2) Department of Electric Engineering and Information System, Hefei University of Technology, Hefei; 230009, China; (3) Jt. NTU-Univ. of British Columbia Research Center of Excellence in Active Living for the Elderly, Nanyang Technological University, Singapore; 639798, Singapore; (4) School of Computing, National University of Singapore, Singapore; 119077, Singapore; (5) Centre for Quantum Computation and Intelligent Systems, University of Technology Sydney, Sydney; NSW; 2007, Australia; (6) State Key Laboratory of Transient Optics and Photonics, Center for Optical Imagery Analysis and Learning, Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China
Source title:IEEE Transactions on Neural Networks and Learning Systems
Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.
Volume:28
Issue:7
Issue date:July 2017
Publication year:2017
Pages:1508-1519
Article number:7419264
Language:English
ISSN:2162237X
E-ISSN:21622388
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Understanding the progression of chronic diseases can empower the sufferers in taking proactive care. To predict the disease status in the future time points, various machine learning approaches have been proposed. However, a few of them jointly consider the dual heterogeneities of chronic disease progression. In particular, the predicting task at each time point has features from multiple sources, and multiple tasks are related to each other in chronological order. To tackle this problem, we propose a novel and unified scheme to coregularize the prior knowledge of source consistency and temporal smoothness. We theoretically prove that our proposed model is a linear model. Before training our model, we adopt the matrix factorization approach to address the data missing problem. Extensive evaluations on real-world Alzheimer's disease data set have demonstrated the effectiveness and efficiency of our model. It is worth mentioning that our model is generally applicable to a rich range of chronic diseases. 2012 IEEE.
Number of references:45
Main heading:Neurodegenerative diseases
Controlled terms:Factorization - Forecasting - Learning systems
Uncontrolled terms:Alzheimer's disease - Disease progression - Effectiveness and efficiencies - Machine learning approaches - Matrix factorizations - Multisources - source consistency - Temporal regularization
Classification code:461.6 Medicine and Pharmacology - 921 Mathematics
DOI:10.1109/TNNLS.2016.2520964
Funding details: Number: 61572169, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China under Grant 61572169.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<170>

Accession number:20172403755708
Title:Dispersion management of a compact all fiber Yb doped NPE passive mode-locked oscillator by a tapered fiber
Authors:Yang, Peilong (1, 2); Hu, Zhongqi (1, 2); Teng, Hao (2); Lv, Zhiguo (3); Wei, Zhiyi (2)
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, xi'an; 710119, China
Corresponding author:Wei, Zhiyi(zywei@iphy.ac.cn)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F41-CLEO_SI 2017
Part number:1 of 1
Issue title:CLEO: Science and Innovations, CLEO_SI 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:CLEO: Science and Innovations, CLEO_SI 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:135888
Publisher:OSA - The Optical Society
Abstract:We explored dispersion management of a NPE mode-locked Yb-doped all fiber oscillator by a tapered fiber, the compressed pulse duration of 116fs, power of 36mW , spectrum is widened to near 20nm. 2017 OSA.
Number of references:4
Page count:2
Main heading:Fibers
Controlled terms:Locks (fasteners)
Uncontrolled terms:All fiber - Compressed pulse - Dispersion management - Mode-locked - Passive mode-locked - Tapered fiber - Yb-doped
Classification code:547.2 Rare Earth Metals
Numerical data indexing:Power 3.60e-02W, Size 2.00e-08m, Time 1.16e-13s
DOI:10.1364/CLEO_SI.2017.SM4L.8

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<171>

Accession number:20174504379313
Title:Influence of test equipment pose error on dividing error measurement based on autocollimator
Authors:Tian, Liu-De (1, 2); Zhao, Jian-Ke (1); Wang, Tao (1); Zhao, Huai-Xue (1); Duan, Ya-Xuan (1, 2); Liu, Zhao-Hui (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Tian, Liu-De(tianliude@126.com)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:9
Issue date:September 1, 2017
Publication year:2017
Pages:2267-2276
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:In order to improve the measurement accuracy of dividing error of encoders, the principle and method to measure dividing error by using angular polygon and autocollimator were introduced, and the error sources were analyzed. According to the measurement principle, coordinate systems of angular polygon and autocollimator were established. Utilizing the method of coordinate transformation, precise mathematical models were deduced for indicating the relationships between dividing error and misalignment errors, such as parallelism error between the angular polygon working surface and the axis of the tested unit, perpendicularity error between autocollimator optical axis and the working surface of angular polygon, parallelism error between vertical wire of the autocollimator and the axis of the tested unit. In order to verify the error models of misadjustment, three experiments were performed in the laboratory, taking the positioning error of a single-axis position turntable as test object. The experimental and theoretical results have good consistency and the maximum deviation was less than 0.9″, which indicate that the error models of misadjustment are applicable to guide dividing error measurement. 2017, Science Press. All right reserved.
Number of references:21
Main heading:Geometry
Controlled terms:Equipment testing - Error analysis - Mathematical transformations
Uncontrolled terms:Angular polygon - Autocollimators - Co-ordinate system - Co-ordinate transformation - Coodinate transformation - Error measurements - Measurement accuracy - Misalignment errors
Classification code:921 Mathematics - 921.3 Mathematical Transformations
DOI:10.3788/OPE.20172509.2267

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<172>

Accession number:20163702783562
Title:Femtosecond passively Er-doped mode-locked fiber laser with WS2solution saturable absorber
Authors:Li, Lu (1, 2); Su, Yulong (1); Wang, Yonggang (1); Wang, Xi (1); Wang, Yishan (1, 3); Li, Xiaohui (3); Mao, Dong (4); Si, Jinhai (2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (3) School of Physics and information Technology, Shaanxi Normal University, Xi'an; 710119, China; (4) Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710072, China
Corresponding author:Li, Lu(lilu@opt.cn)
Source title:IEEE Journal of Selected Topics in Quantum Electronics
Abbreviated source title:IEEE J Sel Top Quantum Electron
Volume:23
Issue:1
Issue date:January-February 2017
Publication year:2017
Article number:7426731
Language:English
ISSN:07921233
E-ISSN:21910359
CODEN:IJSQEN
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:This study presents the femtosecond fundamental and harmonic mode-locked Er-doped fiber laser with WS2solution saturable absorber (SSA). The SA is fabricated based on a D-shaped fiber (DF) embedded in WS2nanosheets solution. Such WS2solution has virtues of good antioxidant capacity, excellent scattering resistance, high heat dissipation, and high damage threshold. This kind of SA shows a modulation depth of 11%, a saturable intensity Isatof 5 MW/cm2, and nonsaturable loss of 18%. By employing DF-WS2SSA, a stable mode-locked fiber laser is achieved with repetition rate of 10.2 MHz and pulse duration of 660 fs. At the pump power of 350 mW, 460.7-MHz repetition rate harmonic mode-locking (HML) operation is also obtained, which corresponds to 45th harmonics of the fundamental cavity repetition rate. The pulse duration is 710 fs and signal-to-noise ratio is 66 dB, showing the excellent performance in HML fiber laser with SA. The results indicate that DF-WS2solution can work as a potential SA for ultrafast nonlinear optics. 1995-2012 IEEE.
Number of references:52
Main heading:Mode-locked fiber lasers
Controlled terms:Erbium compounds - Fiber lasers - Fibers - Harmonic analysis - Heat resistance - Locks (fasteners) - Nonlinear optics - Optical materials - Pulse repetition rate - Saturable absorbers - Signal to noise ratio - Tungsten compounds
Uncontrolled terms:Antioxidant capacity - Damage threshold - Er-doped fiber laser - Harmonic mode locking - Modulation depth - Non-linear optical material - Non-saturable loss - Ultrafast nonlinear optics
Classification code:716.1 Information Theory and Signal Processing - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.4 Solid State Lasers - 921.6 Numerical Methods
Numerical data indexing:Decibel 6.60e+01dB, Frequency 1.02e+07Hz, Frequency 4.61e+08Hz, Percentage 1.10e+01%, Percentage 1.80e+01%, Power 3.50e-01W, Surface_Power_Density 5.00e+10W/m2, Time 6.60e-13s, Time 7.10e-13s
DOI:10.1109/JSTQE.2016.2538640
Funding details: Number: SKLST201401, Acronym: CAAS, Sponsor: Chinese Academy of Agricultural Sciences;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61378024, and the Open Research Fund of the State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science under Grant SKLST201401.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<173>

Accession number:20175104560097
Title:Effects of Spatial Electrons on Signal-Noise-Ratio of a X-ray Communication System
Authors:Li, Yao (1, 2); Su, Tong (1, 2); Sheng, Li-Zhi (1); Qiang, Peng-Fei (1, 2); Xu, Neng (1, 2, 3); Li, Lin-Sen (1, 2, 4); Zhao, Bao-Sheng (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (4) School of Sciences, Xi'an Jiaotong University, Xi'an; 710049, China
Corresponding author:Qiang, Peng-Fei(qiangpengfei@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:11
Issue date:November 1, 2017
Publication year:2017
Article number:1106002
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:A model of electron interacting with nested X-ray focusing optics was designed firstly. Then the process of electrons interacting with coating material of X-ray focusing optics and the quantum efficiency of X-ray source by using a Monte Carlo N Particle transport code was analysized. Simulation results accord well with the analyze results. Finally, a silicon drift detector, which has an energy resolution of 125 eV was used to analysis the energy spectrum in the focal point. In the detecting part, X-ray photons are composed of two parts, signal photons generated by the X-ray source and noisy X-ray photons generated from nested X-ray focusing optics' coating material. According to different conditions of X-ray source and electron gun voltage, the number of signal photon, noisy photon and signal to noise ratio of the X-ray communication demonstration system then can be calculated. Experiment and calculate results show that nested X-ray focusing optics can effectively filter spatial particles, which will optimize the signal to noise ratio of X-ray communication system. When the number of incident electrons is about 1×108counts per second with an energy distribution from 1~20 keV, signal to noise ratio of the X-ray communication demonstration system can reach at least 15.1 dB. These results will provide foundations for optimizing the core parameters of X-ray communication system in the future. 2017, Science Press. All right reserved.
Number of references:22
Main heading:X rays
Controlled terms:Coatings - Electron guns - Electron sources - Electrons - Focusing - Light - Photons - Plating - Quantum chemistry - Signal to noise ratio - X ray apparatus
Uncontrolled terms:Energy distributions - Energy resolutions - Fluoresycence - Focusing optics - Incident electrons - Monte carlo n particles - Silicon Drift Detector - X-ray focusing optics
Classification code:539.3 Metal Plating - 714.1 Electron Tubes - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 801.4 Physical Chemistry - 813.2 Coating Materials - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics
Numerical data indexing:Decibel 1.51e+01dB, Electron_Volt 1.00e+03eV to 2.00e+04eV, Electron_Volt 1.25e+02eV
DOI:10.3788/gzxb20174611.1106002
Funding details: Number: 61471357, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (No. 61471357) and the Western Light Research Program of the Chinese Academy of Sciences.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<174>

Accession number:20181304958855
Title:Simultaneous, real-time, chromatic polarimetric imaging technology with full-polarization-state detection
Authors:Ju, Hai-Juan (1, 2); Liang, Jian (1, 2); Zhang, Wen-Fei (1, 2); Bai, Zhao-Feng (1); Ren, Li-Yong (1); Qu, En-Shi (1)
Author affiliation:(1) Department of Information Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves
Abbreviated source title:Hongwai Yu Haomibo Xuebao
Volume:36
Issue:6
Issue date:December 1, 2017
Publication year:2017
Pages:744-748
Language:Chinese
ISSN:10019014
CODEN:HHXUEZ
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:As a new kind of optical imaging technology, polarimetric imaging can efficiently increase the detection dimension of the information by detecting the polarization properties of the optical wave. This is useful for obtaining the target information comprehensively and accurately. Firstly, the method of polarization imaging detecting was introduced and the typical polarization imaging systems are reviewed in this paper. Then, based on Stokes Vector, a simultaneous, real-time, division of aperture chromatic polarimetric imaging camera with full-polarization-state detection was introduced in detail. Finally, the experimental results of full polarimetric imaging and polarimetric dehazing imaging using this camera were demonstrated. The experimental results indicate that the polarimetric imaging technology of full polarization states simultaneous detecting has obvious advantages on developing the detecting distance and acquiring the detail features, so it can provide important supplement for modern optical imaging system. 2017, Science Press. All right reserved.
Number of references:24
Main heading:Polarization
Controlled terms:Cameras - Demulsification - Imaging systems - Optical image storage - Polarimeters
Uncontrolled terms:Division of aperture - Full polarization state - Optical imaging system - Optical imaging technology - Polarimetric imaging - Polarization imaging - Polarization properties - Simultaneous detection
Classification code:722.1 Data Storage, Equipment and Techniques - 742.2 Photographic Equipment - 746 Imaging Techniques - 802.3 Chemical Operations - 941.3 Optical Instruments
DOI:10.11972/j.issn.1001-9014.2017.06.018
Funding details: Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Foundation items: Supported by National Natural Science Foundation of China(61505246, 61535015, 61275149).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<175>

Accession number:20171703607634
Title:Ultra-short wavelength operation in Thulium-doped silica fiber laser with bidirectional pumping
Authors:Xiao, Xusheng (1, 2); Guo, Haitao (1); Yan, Zhijun (1); Wang, Hushan (1); Xu, Yantao (1); Lu, Min (1); Wang, Yishan (1); Peng, Bo (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, Shaanxi; 710119, China; (2) Graduate School, Chinese Academy of Sciences (CAS), Beijing; 100049, China
Corresponding author:Guo, Haitao
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102561F
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:An ultra-short wavelength operation of Tm-doped all fiber laser based on fiber Bragg gratings (FBGs) was developed. A bi-directional pump configuration for the ultra-short wavelength operation was designed and investigated for the first time. the laser yielded 3.15W of continuous-wave output at 1706.75nm with a narrow-linewidth of ~50pm and a maximum slope efficiency of 42.1%. The dependencies of the slope efficiencies and pump threshold of the laser versus the length of active fiber and reflectivity of the output mirror (FBG) were investigated in detail. An experimental comparative study between two Thulium-doped fiber lasers (TDFLs) with two different pumping configuration(forward unidirectional pumping and bidirectional pumping) was presented. It is indisputable that the development of 1.7μm silicate fiber lasers with Watt-level output power open up a number of heart-stirring and tempting application windows. 2017 SPIE.
Number of references:20
Main heading:Pumping (laser)
Controlled terms:Efficiency - Fiber Bragg gratings - Fiber lasers - Fibers - Laser mirrors - Photonics - Silica - Silicates - Thulium
Uncontrolled terms:Bidirectional pumping - Comparative studies - Fiber Bragg gratings (FBGs) - Pump configuration - Pumping configurations - Short wavelengths - Slope efficiencies - Thulium-doped fibers
Classification code:547.2 Rare Earth Metals - 741.1 Light/Optics - 744 Lasers - 913.1 Production Engineering
Numerical data indexing:Power 3.15e+00W, Size 1.70e-06m, Size 1.71e-06m, Percentage 4.21e+01%
DOI:10.1117/12.2256818

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<176>

Accession number:20172103685887
Title:Thermal characteristics of compact conduction-cooled high power diode laser array packages
Authors:Zhang, Pu (1); Liu, Xingsheng (1, 2); Zhu, Qiwen (1); Wang, Jingwei (2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an Hi-Tech Industrial Development Zone, No. 17 Xinxi Road, New Industrial Park, Xi'an, Shaanxi; 710119, China; (2) Focuslight Technologies Co., LTD, Xi'an Hi-Tech Industrial Development Zone, No. 60 Xibu Road, New Industrial Park, Xi'an, Shaanxi; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10085
Part number:1 of 1
Issue title:Components and Packaging for Laser Systems III 2017
Issue date:2017
Publication year:2017
Article number:100850A
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510606111
Document type:Conference article (CA)
Conference name:Components and Packaging for Laser Systems III 2017
Conference date:January 31, 2017 - February 2, 2017
Conference location:San Francisco, CA, United states
Conference code:127684
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Thermal management is one of the most important factors affecting the performance of high power diode lasers. In this paper, transient thermal behavior of conduction-cooled high power diode lasers has been studied using finite element method. The effects of heat sink geometry, ceramics size on the junction temperature of high power diode laser packages have been analyzed. Based on the simulations, heat dissipation capability of high power diode laser packages is improved and compact conduction-cooled diode laser array packages with 3 bars and 5 bars are fabricated. The power ~ current and spectrum of the optimized high power diode laser array packages at different operation parameters are characterized at different pulse widths, repetition frequencies and TEC temperatures. The effects of temperature on the output power and spectrum are discussed. The lifetime test of high power diode laser array packages is also performed. It shows that the conduction-cooled high power diode laser array packages have good optical performance. 2017 SPIE.
Number of references:11
Main heading:Semiconductor lasers
Controlled terms:Diodes - Finite element method - Laser beam welding - Packaging - Power semiconductor diodes - Temperature
Uncontrolled terms:Conduction cooled - Effects of temperature - Heat dissipation capability - High power diode laser - High-power diode laser arrays - Junction temperatures - Thermal characteristics - Thermal optimization
Classification code:641.1 Thermodynamics - 694.1 Packaging, General - 744.4.1 Semiconductor Lasers - 744.9 Laser Applications - 921.6 Numerical Methods
DOI:10.1117/12.2250258

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<177>

Accession number:20171703607655
Title:The cooling control system for focal plane assembly of astronomical satellite camera based on TEC
Authors:Yuqing, He (1, 2); Yunfei, Du (1); Wei, Gao (1); Baopeng, Li (1); Xuewu, Fan (1); Wengang, Yang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102562H
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:The dark current noise existing in the CCD of the astronomical observation camera has a serious influence on its working performance, reducing the working temperature of CCD can suppress the influence of dark current effectively. By analyzing the relationship between the CCD chip and the dark current noise, the optimum working temperature of the red band CCD focal plane is identified as -75°C. According to the refrigeration temperature, a cooling control system for focal plane based on a thermoelectric cooler (TEC) was designed. It is required that the system can achieve high precision temperature control for the target. In the cooling control system, the 80C32 microcontroller was used as its systematic core processor. The advanced PID control algorithm is adopted to control the temperature of the top end of TEC. The bottom end of the TEC setting a constant value according to the target temperature used to assist the upper TEC to control the temperature. The experimental results show that the cooling system satisfies the requirements of the focal plane for the astronomical observation camera, it can reach the working temperature of -75°C and the accuracy of ±2°C. 2017 SPIE.
Number of references:12
Main heading:Thermal management (electronics)
Controlled terms:Cameras - Charge coupled devices - Cooling - Cooling systems - Dark currents - Flight control systems - Focusing - Photonics - Temperature control - Thermoelectric equipment - Three term control systems
Uncontrolled terms:Astronomical observation - Dark current noise - Focal plane assemblies - Refrigeration temperatures - Target temperature - Thermoelectric cooler - Working performance - Working temperatures
Classification code:615.4 Thermoelectric Energy - 641.2 Heat Transfer - 711.2 Electromagnetic Waves in Relation to Various Structures - 714.2 Semiconductor Devices and Integrated Circuits - 731.1 Control Systems - 731.3 Specific Variables Control - 741.1 Light/Optics - 742.2 Photographic Equipment
Numerical data indexing:Temperature 1.98e+02K
DOI:10.1117/12.2257422

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<178>

Accession number:20170803359894
Title:Latent semantic concept regularized model for blind image deconvolution
Authors:Ye, Renzhen (1, 2); Li, Xuelong (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (2) School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an; Shaanxi; 710119, China
Corresponding author:Ye, Renzhen(yerenzhen@gmail.com)
Source title:Neurocomputing
Abbreviated source title:Neurocomputing
Volume:257
Issue date:September 27, 2017
Publication year:2017
Pages:206-213
Language:English
ISSN:09252312
E-ISSN:18728286
CODEN:NRCGEO
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:Blind image deconvolution refers to the recovery of a sharp image when the degradation processing is unknown. Many existing methods have the problem that they are designed to exploit low level image descriptors (e.g. image pixels or image gradient) only, rather than high-level latent semantic concepts, thus there is no guarantee of human visual perception. To address this problem, in this paper, a latent semantic concept regularized (LSCR) method is proposed to reduce the blind deconvolution problem at a semantic level. The proposed method explores the relationship between different image descriptors and exploits sparse measure to favor sharp images over blurry images. And matrix factorization is introduced to learn the latent concepts from the image descriptors. Then, the image prior can be described and constrained by the learned latent semantic concepts of image descriptors using a much more effective convolution matrix. In this case, the blind deconvolution problem can be regularized and the sharp version of the blurry image can be recovered at a new latent semantic level. Furthermore, an iterative algorithm is exploited to derive optimal solution. The proposed model is evaluated on two different datasets, including simulation dataset and real dataset, and state-of-the-art performance is achieved compared with other methods. 2017 Elsevier B.V.
Number of references:58
Main heading:Iterative methods
Controlled terms:Convolution - Factorization - Learning systems - Matrix algebra
Uncontrolled terms:Blind deconvolution - Blind image deconvolution - Degradation processing - Human visual perception - Latent semantics - Manifold regularized - Matrix factorizations - State-of-the-art performance
Classification code:716.1 Information Theory and Signal Processing - 921 Mathematics
DOI:10.1016/j.neucom.2016.11.064

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<179>

Accession number:20164603021588
Title:Adaptive synchronization of delayed reaction-diffusion neural networks with unknown non-identical time-varying coupling strengths
Authors:Li, Junmin (1); He, Chao (1); Zhang, Weiyuan (2); Chen, Minglai (1, 3)
Author affiliation:(1) School of Mathematics and Statistics, Xidian University, Xi'an; 710071, China; (2) Institute of Nonlinear Science, Xianyang Normal University, Xianyang; 712000, China; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China
Corresponding author:Li, Junmin(jmli@mail.xidian.edu.cn)
Source title:Neurocomputing
Abbreviated source title:Neurocomputing
Volume:219
Issue date:January 5, 2017
Publication year:2017
Pages:144-153
Language:English
ISSN:09252312
E-ISSN:18728286
CODEN:NRCGEO
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:This paper concerns the asymptotic synchronization of delayed reaction-diffusion neural networks (RDNNs) with unknown nonidentical time-varying coupling strengths, where the time-varying coupling strengths are consist of continuous time-varying periodic parameters and time-invariant nonnegative parameters. By utilizing a novel adaptive approach, the differential-difference type adaptive laws of coupling strengths and adaptive controller are designed such that the nonidentical RDNNs are asymptotic synchronization. The sufficient conditions dependent on the reaction-diffusion terms are derived by constructing a novel Lyapunov-Krasovskii-like composite energy functional (CEF) and using Barbalat's lemma. Finally, a simulation example is provided to illustrate the effectiveness of the developed approach. 2016 Elsevier B.V.
Number of references:43
Main heading:Time varying networks
Controlled terms:Continuous time systems - Diffusion in liquids - Synchronization
Uncontrolled terms:Adaptive - Asymptotic synchronization - Composite energy - Reaction-diffusion neural networks - Time-varying coupling strengths
Classification code:703.1 Electric Networks - 961 Systems Science
DOI:10.1016/j.neucom.2016.09.006

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<180>

Accession number:20182305271468
Title:CCD imagers MTF enhanced filter design
Authors:Jian, Zhang (1, 2); Yangyu, Fan (1); Zhe, Xu (2)
Author affiliation:(1) Institute of Information, Northwest Polytechnical University, Xi'an, China; (2) Space Optics Lab, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China
Source title:International Conference on Communication Technology Proceedings, ICCT
Abbreviated source title:Int. Conf. Commun. Technol. Proc. ICCT
Volume:2017-October
Part number:1 of 1
Issue title:2017 17th IEEE International Conference on Communication Technology, ICCT 2017
Issue date:July 2, 2017
Publication year:2017
Pages:1720-1724
Language:English
ISBN-13:9781509039432
Document type:Conference article (CA)
Conference name:17th IEEE International Conference on Communication Technology, ICCT 2017
Conference date:October 27, 2017 - October 30, 2017
Conference location:Chengdu, China
Conference code:136565
Sponsor:IEEE; SIE
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In order to improve the imaging quality of the optical imagers, the modulation transfer function enhanced CCD signal filter circuit is designed. Firstly, the imager MTF transfer chain is discussed, and the impact to MTF causing by each part of imaging chain is introduced. Secondly, from frequency domain and time domain respectively the MTF enhanced filter principle and implementation method are analyzed, the filter minimum bandwidth is confirmed. By comparing the step response of the filter and the response of the camera to the Nyquist spatial frequency fringe imaging in simulation experiment, the optimum quality factor of the MTF enhancement filter is determined. Lastly, the camera MTF test was carried out using black and white stripe target, and the SNR of the camera was measured by integrating sphere. The test results show that MTF enhanced filter can improve the system MTF 30% when the quality factor is 1, and the noise suppression capability is comparable to that of the maximally flat filter in the pass-band. MTF enhancement filter can effectively improve the imaging performance of CCD camera. 2017 IEEE.
Number of references:17
Main heading:Image enhancement
Controlled terms:Bandpass filters - Butterworth filters - CCD cameras - Chains - Frequency domain analysis - Low pass filters - Modulation - Optical transfer function - Signal to noise ratio - Time domain analysis - Transfer functions
Uncontrolled terms:Frequency domains - Imaging performance - Integrating spheres - Maximally flat filters - Modulation transfer function (MTF) - Quality factors - Signal-noise ratio - Spatial frequency
Classification code:602.1 Mechanical Drives - 703.2 Electric Filters - 714.2 Semiconductor Devices and Integrated Circuits - 716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 921 Mathematics - 921.3 Mathematical Transformations
Numerical data indexing:Percentage 3.00e+01%
DOI:10.1109/ICCT.2017.8359924

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<181>

Accession number:20171503568129
Title:Efficient modulation of orthogonally polarized infrared light using graphene metamaterials
Authors:Cui, Yudong (1, 2); Zeng, Chao (2)
Author affiliation:(1) State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou; 310027, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Zeng, Chao(zengchao@opt.cn)
Source title:Journal of Applied Physics
Abbreviated source title:J Appl Phys
Volume:121
Issue:14
Issue date:April 14, 2017
Publication year:2017
Article number:143102
Language:English
ISSN:00218979
E-ISSN:10897550
CODEN:JAPIAU
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:We propose an efficient modulation of linearly polarized infrared light using graphene metamaterials (GMMs) by exploiting the phase-coupled plasmon-induced transparency (PIT) mechanism. Because of the phase-coupling effect in GMMs, pronounced PIT peaks can be simultaneously obtained for the orthogonally polarized light through tuning of the Fermi level in graphene. Taking advantage of such polarization-selective PIT spectral responses and precise phase management, a dual-polarization GMM modulator is successfully achieved with ultra-high modulation depths of ~32 dB at 10 μm and ~28 dB at 12.45 μm for the x- and y-polarized light beams, respectively. The underlying principle of the proposal is well explained and verified by using transfer matrix method. The proposed scheme provides new opportunities for developing graphene-integrated high-performance electro-optical modulation, switching, and other optoelectronics applications. 2017 Author(s).
Number of references:31
Main heading:Transfer matrix method
Controlled terms:Graphene - Light polarization - Metamaterials - Modulation
Uncontrolled terms:Dual-polarizations - Electro-optical modulation - Induced transparency - Linearly polarized - Modulation depth - Polarized light beams - Spectral response - Underlying principles
Classification code:741.1 Light/Optics - 761 Nanotechnology - 804 Chemical Products Generally - 921 Mathematics - 951 Materials Science
Numerical data indexing:Size 1.00e-05m, Size 1.24e-05m
DOI:10.1063/1.4980029
Funding details: Number: 2015KCT-06, Acronym: -, Sponsor: -;Number: 61525505, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant Agreement No. 61525505 and by the Key Scientific and Technological Innovation Team Project in Shaanxi Province (2015KCT-06).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<182>

Accession number:20173804172573
Title:Modeling Information Diffusion over Social Networks for Temporal Dynamic Prediction
Authors:Li, Dong (1, 2); Zhang, Shengping (3); Sun, Xin (3); Zhou, Huiyu (4); Li, Sheng (5); Li, Xuelong (6)
Author affiliation:(1) School of Electrical and Information Engineering, Shandong University, Weihai; 264209, China; (2) Harbin Institute of Technology, Harbin; 150001, China; (3) School of Computer Science and Technology, Harbin Institute of Technology, Weihai; 264200, China; (4) Centre for Secure Information Technologies (CSIT), Queen's University Belfast, Belfast; BT7 1NN, United Kingdom; (5) School of Computer Science and Technology, Harbin Institute of Technology, Harbin; 150001, China; (6) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Zhang, Shengping(s.zhang@hit.edu.cn)
Source title:IEEE Transactions on Knowledge and Data Engineering
Abbreviated source title:IEEE Trans Knowl Data Eng
Volume:29
Issue:9
Issue date:September 1, 2017
Publication year:2017
Pages:1985-1997
Article number:7921565
Language:English
ISSN:10414347
CODEN:ITKEEH
Document type:Journal article (JA)
Publisher:IEEE Computer Society
Abstract:Modeling the process of information diffusion is a challenging problem. Although numerous attempts have been made in order to solve this problem, very few studies are actually able to simulate and predict temporal dynamics of the diffusion process. In this paper, we propose a novel information diffusion model, namely GT model, which treats the nodes of a network as intelligent and rational agents and then calculates their corresponding payoffs, given different choices to make strategic decisions. By introducing time-related payoffs based on the diffusion data, the proposed GT model can be used to predict whether or not the user's behaviors will occur in a specific time interval. The user's payoff can be divided into two parts: social payoff from the user's social contacts and preference payoff from the user's idiosyncratic preference. We here exploit the global influence of the user and the social influence between any two users to accurately calculate the social payoff. In addition, we develop a new method of presenting social influence that can fully capture the temporal dynamics of social influence. Experimental results from two different datasets, Sina Weibo and Flickr demonstrate the rationality and effectiveness of the proposed prediction method with different evaluation metrics. 1989-2012 IEEE.
Number of references:43
Main heading:Economic and social effects
Controlled terms:Behavioral research - Forecasting - Models - Social networking (online)
Uncontrolled terms:Diffusion process - Evaluation metrics - Information diffusion - Model informations - Novel information - Prediction methods - Strategic decisions - Temporal dynamics
Classification code:723 Computer Software, Data Handling and Applications - 971 Social Sciences
DOI:10.1109/TKDE.2017.2702162
Funding details: Number: 2015ZDXX0201B02, Acronym: -, Sponsor: Department of Science and Technology of Shandong Province;Number: -, Acronym: -, Sponsor: Natural Science Foundation of Shandong Province;Number: EP/N508664/1, Acronym: -, Sponsor: Engineering and Physical Sciences Research Council;Number: 2016M600250, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: ALGA4131016116, Acronym: -, Sponsor: Society of Hong Kong Scholars;Number: 61761130079, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: 61602128, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: NA160342, Acronym: -, Sponsor: -;
Funding text:D. Li was supported in part by the Hong Kong Scholar Foundation of China (No. ALGA4131016116), the China Postdoctoral Foundation (No. 2016M600250), and the Major Science and Technology Foundation of Shandong Province (No. 2015ZDXX0201B02). S. Zhang was supported in part by the Natural Science Foundation of China (No. 61672188). X. Sun was supported in part by the Natural Science Foundation of China (No. 61602128) and the Natural Science Foundation of Shandong Province (No. ZR2016FQ13). H. Zhou was supported in part by UK EPSRC under Grants EP/N508664/1 and EP/N011074/1, and Royal Society-Newton Advanced Fellowship under Grant NA160342. X. Li was supported in part by the National Natural Science Foundation of China (Grant No. 61761130079).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<183>

Accession number:20174304313456
Title:Temperature-calibrated high-precision refractometer using a tilted fiber Bragg grating
Authors:Jiang, Biqiang (1, 2); Zhou, Kaiming (2, 3); Wang, Changle (2); Zhao, Yunhe (2); Zhao, Jianlin (1); Zhang, Lin (2)
Author affiliation:(1) MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi’an; 710072, China; (2) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China
Corresponding author:Jiang, Biqiang(bqjiang@nwpu.edu.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:21
Issue date:October 16, 2017
Publication year:2017
Pages:25910-25918
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:We present a refractometer with main- and vernier-scale to measure the refractive index (RI) of liquids with high precision by using the fine spectrum structure of a tilted fiber Bragg grating (TFBG). The absolute RI values are determined by the accurate wavelength of cut-off mode resonances. The main- and vernier-scale are calibrated by measuring large groups of fine spectra at different cut-off mode resonances in a small RI range, and the use of vernier-scale certainly reduces the RI measurement uncertainty resulted from the discrete cladding mode resonances. The performance of the TFBG-based vernier refractometer is experimentally verified by exploring the temperature dependence of RI of anhydrous ethanol in a near infrared region, showing an enhanced accuracy to the order of 10?4, high repeatability and temperature self-calibration capability. 2017 Optical Society of America.
Number of references:25
Main heading:Refractometers
Controlled terms:Fiber Bragg gratings - Infrared devices - Refractive index - Resonance - Temperature distribution - Uncertainty analysis
Uncontrolled terms:Anhydrous ethanol - Cladding mode resonances - Measurement uncertainty - Near infrared region - Self calibration - Spectrum structure - Temperature dependence - Tilted fiber Bragg grating
Classification code:641.1 Thermodynamics - 741.1 Light/Optics - 922.1 Probability Theory - 931.1 Mechanics - 941.3 Optical Instruments
DOI:10.1364/OE.25.025910
Funding details: Number: 61505165, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 660648, Acronym: H2020, Sponsor: Horizon 2020 Framework Programme;
Funding text:Marie Sk?odowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme (660648); National Natural Science Foundation of China (61505165); Natural Science Basic Research Plan in Shaanxi Province of China (2016JQ6032).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<184>

Accession number:20181304944791
Title:Generation of carrier-envelope phase stabilized laser from solid plates and application in high-harmonic generation
Authors:Liu, Yangyang (1); He, Peng (2); Zhao, Kun (1); Huang, Hangdong (2); Jiang, Yujiao (2); Huang, Pei (3); Teng, Hao (1); He, Xinkui (1); Fang, Shaobo (1); Hou, Xun (3); Wei, Zhiyi (1)
Author affiliation:(1) Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (2) School of Physics and Optoelectronics Engineering, Xidian University, Xi'an; 710071, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.
Volume:2017-January
Part number:1 of 1
Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Issue date:October 25, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781943580279
Document type:Conference article (CA)
Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:131854
Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We demonstrated carrier-envelope phase (CEP) stabilized pulse as short as 5.4fs by compressing the octave-spanning spectrum from solid-state plates. Continuous and discrete HHG were observed by using the laser pulse as driver with different CEP. 2017 IEEE.
Number of references:8
Main heading:Harmonic generation
Uncontrolled terms:Carrier-envelope phase - High harmonic generation - Octave-spanning spectra - Solid plates - Stabilized lasers
Numerical data indexing:Time 5.40e-15s
DOI:10.1364/CLEO_SI.2017.AF1B.4

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<185>

Accession number:20173804168577
Title:On-chip quantum state generation by means of integrated frequency combs
Authors:Sciara, Stefania (1, 2); Kues, Michael (1, 3); Reimer, Christian (1); Roztocki, Piotr (1); Wetzel, Benjamin (1, 4); Bromberg, Yaron (5); Little, Brent E. (6); Chu, Sai T. (7); Moss, David J. (8); Caspani, Lucia (9); Morandotti, Roberto (1)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel Boulet, Varennes; QC; J3X1S2, Canada; (2) University of Palermo, Department of Energy, Information Engineering and Mathematical Methods, Palermo; 90128, Italy; (3) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (4) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (5) Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem; 91904, Israel; (6) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China; (7) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (8) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (9) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G4 0NW, United Kingdom
Source title:Summer Topicals Meeting Series, SUM 2017
Abbreviated source title:Summer Top. Meet. Ser., SUM
Part number:1 of 1
Issue title:Summer Topicals Meeting Series, SUM 2017
Issue date:August 17, 2017
Publication year:2017
Pages:181-182
Article number:8012710
Language:English
ISBN-13:9781509065707
Document type:Conference article (CA)
Conference name:2017 IEEE Photonics Society Summer Topicals Meeting Series, SUM 2017
Conference date:July 10, 2017 - July 12, 2017
Conference location:San Juan, Puerto rico
Conference code:130065
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Entangled photon-pair sources are key building blocks towards the realization of applications in quantum information processing [1], quantum communications [2], as well as imaging and sensing with resolutions exceeding the classical limit [3]. The generation of, e.g. polarization, time-energy and time-bin entangled photon-pairs has been demonstrated using spontaneous parametric down-conversion (SPDC) in nonlinear second-order media, as well as spontaneous four-wave mixing (SFWM) in third-order nonlinear media. Specifically, nonlinear (third-order) interactions in on-chip microring resonators have been widely used to achieve classical frequency combs [4], mode-lock lasers [5], signal processing [6], etc. Integrated photonics can also find applications for quantum state generation in compact, scalable and efficient devices, required for future optical quantum circuits. In particular, solutions focusing on an integrated (on-chip) approach have been recently investigated and developed, including integrated quantum circuits, sources and detectors [7]. In contrast to waveguides, microring resonators [8] with narrow resonances and high Q-factors, offer an improvement in photon-pair generation efficiency, as well as a narrow photon-pair bandwidth, making them compatible with quantum optical devices (e.g. high temporal-resolution single-photon detectors and quantum memories). Most importantly, in contrast to non-resonant waveguides, where individuals photon-pairs, featured by one signal/idler frequency pair, are generally produced, resonant nonlinear cavities (e.g., microring resonators) allow the generation of correlated photon-pairs on multiple signal/idler frequency channels [9], due to their periodic and equidistant resonance structure. 2017 IEEE.
Number of references:15
Main heading:Quantum entanglement
Controlled terms:Four wave mixing - Optical frequency conversion - Optical resonators - Particle beams - Photonics - Photons - Q factor measurement - Quantum optics - Signal processing - Waveguides
Uncontrolled terms:Correlated photon pairs - High temporal resolution - Photon pair generations - Quantum state generation - Quantum-information processing - Single-photon detectors - Spontaneous four-wave mixing - Spontaneous parametric down conversion
Classification code:714.3 Waveguides - 716.1 Information Theory and Signal Processing - 741.1.1 Nonlinear Optics - 741.3 Optical Devices and Systems - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics - 932.1 High Energy Physics - 942.2 Electric Variables Measurements
DOI:10.1109/PHOSST.2017.8012710
Funding details: Number: -, Acronym: CityU, Sponsor: City University of Hong Kong;Number: -, Acronym: -, Sponsor: Canadian Anesthesiologists' Society;Number: -, Acronym: -, Sponsor: Swinburne University of Technology;Number: -, Acronym: -, Sponsor: University of Strathclyde;Number: -, Acronym: -, Sponsor: University of Glasgow;Number: -, Acronym: -, Sponsor: Hebrew University of Jerusalem;Number: -, Acronym: -, Sponsor: University of Sussex;
Funding text:1INRS-EMT, 1650 Boulevard Lionel Boulet, Varennes, Québec J3X 1S2, Canada 2 University of Palermo-Department of Energy, Information Engineering and Mathematical Methods, Palermo 90128, Italy 3School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow G12 8LT, Scotland 4Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9RH, England 5 Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel 6 Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an, China 7Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China 8Centre for Micro Photonics, Swinburne University of Technology, Hawthorn, VIC, 3122 Australia 9Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow G4 0NW, Scotland *michael.kues@emt.inrs.ca, **morandotti@emt.inrs.ca

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<186>

Accession number:20172303739792
Title:Generation of complex quantum states via integrated frequency combs
Authors:Reimer, Christian (1); Kues, Michael (1, 2); Roztocki, Piotr (1); Wetzel, Benjamin (1, 3); Little, Brent E. (4); Chu, Sai T. (5); Caspani, Lucia (6); Moss, David J. (7); Morandotti, Roberto (1, 8)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) Department of Physics and Astronomy, University of Sussex, Falmer, Brighton; BN1 9QH, United Kingdom; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (5) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, Hong Kong; (6) Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow; G4 0NW, United Kingdom; (7) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Morandotti, Roberto(morandotti@emt.inrs.ca)
Source title:Proceedings of the 2017 Design, Automation and Test in Europe, DATE 2017
Abbreviated source title:Proc. Des., Auto. Test Europe, DATE
Part number:1 of 1
Issue title:Proceedings of the 2017 Design, Automation and Test in Europe, DATE 2017
Issue date:May 11, 2017
Publication year:2017
Pages:336-337
Article number:7927012
Language:English
ISBN-13:9783981537093
Document type:Conference article (CA)
Conference name:20th Design, Automation and Test in Europe, DATE 2017
Conference date:March 27, 2017 - March 31, 2017
Conference location:Swisstech, Lausanne, Switzerland
Conference code:127781
Sponsor:ACM Special Interest Group on Design Automation (ACM SIGDA); Electronic System Design Alliance (ESDA); et al.; European Design and Automation Association (EDAA); European Electronic Chips and Systems Design Initiative (ECSI); IEEE Council on Electronic Design Automation (CEDA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The generation of optical quantum states on an integrated platform will enable low cost and accessible advances for quantum technologies such as secure communications and quantum computation. We demonstrate that integrated quantum frequency combs (based on high-Q microring resonators made from a CMOS-compatible, high refractive-index glass platform) can enable, among others, the generation of heralded single photons, cross-polarized photon pairs, as well as bi- and multi-photon entangled qubit states over a broad frequency comb covering the S, C, L telecommunications band, constituting an important cornerstone for future practical implementations of photonic quantum information processing. 2017 IEEE.
Number of references:9
Main heading:Quantum entanglement
Controlled terms:Four wave mixing - Light - Mixer circuits - Nonlinear optics - Photons - Quantum computers - Quantum cryptography - Quantum optics - Refractive index
Uncontrolled terms:Cross-polarized photon pairs - Heralded single photons - High refractive index glass - Integrated optics devices - Integrated platform - Microring resonator - Quantum technologies - Quantum-information processing
Classification code:713.3 Modulators, Demodulators, Limiters, Discriminators, Mixers - 722 Computer Systems and Equipment - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics
DOI:10.23919/DATE.2017.7927012

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<187>

Accession number:20164402973003
Title:Study on the key technologies of a high-speed CMOS camera
Authors:Jiang, Baotan (1, 2, 3); Pan, Zhibin (1); Qiu, Yuehong (2)
Author affiliation:(1) Xi'an Jiaotong University, Xi'an; 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 10039, China
Corresponding author:Jiang, Baotan(jbt21@163.com)
Source title:Optik
Abbreviated source title:Optik
Volume:129
Issue date:January 1, 2017
Publication year:2017
Pages:100-107
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:The high-speed CMOS camera can be widely applied in image technology detection, image measurement, video monitoring, and satellite remote sensing. Given the large image data volume, many technical problems may be encountered in acquisition and transfer of image data and real-time processing. CMV4000 from CMOSIS Company has been selected as image sensor to research application problems. The high-frame and high-definition industrial camera has been designed based on CMV4000 image sensor, FPGA, DDR2 SDRAM high-speed memory chip, and USB3.0 technology. The camera is made up of data automatic alignment module, image acquisition module, memory module, and transfer module. These modules have realized data alignment, acquisition, cache, and transfer of high-speed data. An automatic alignment module is proposed which based on the sliding window consists of register for high-speed image sensor with multi-channel LVDS interface. This module can automatically identify training data sent by LVDS serial channel, and lock the sliding window when finding “Training Pattern”, then realize automatic alignment and synchronization for high-speed and multi-channel data. 2016 Elsevier GmbH
Number of references:7
Main heading:Image acquisition
Controlled terms:Alignment - Cameras - CMOS integrated circuits - Dynamic random access storage - Field programmable gate arrays (FPGA) - Image sensors - Remote sensing - Speed
Uncontrolled terms:Acquisition modules - CMOS camera - Data alignments - High-speed image sensors - LVDS - Realtime processing - Research applications - Satellite remote sensing
Classification code:601.1 Mechanical Devices - 714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 722.1 Data Storage, Equipment and Techniques - 723 Computer Software, Data Handling and Applications - 742.2 Photographic Equipment
DOI:10.1016/j.ijleo.2016.10.056

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<188>

Accession number:20170303265694
Title:Robust Sparse Coding for Mobile Image Labeling on the Cloud
Authors:Tao, Dapeng (1); Cheng, Jun (2, 3); Gao, Xinbo (4); Li, Xuelong (5); Deng, Cheng (4)
Author affiliation:(1) School of Information Science and Engineering, Yunnan University, Kunming; 650091, China; (2) Laboratory for Human Machine Control, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen; 518055, China; (3) Chinese University of Hong Kong, Hong Kong; (4) School of Electronic Engineering, Xidian University, Xi'an; 710071, China; (5) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning, Xi'an Institute of Optics and Precision Mechanics, Xi'an; 710119, China
Source title:IEEE Transactions on Circuits and Systems for Video Technology
Abbreviated source title:IEEE Trans Circuits Syst Video Technol
Volume:27
Issue:1
Issue date:January 2017
Publication year:2017
Pages:62-72
Article number:7428904
Language:English
ISSN:10518215
CODEN:ITCTEM
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:With the rapid development of the mobile service and online social networking service, a large number of mobile images are generated and shared on the social networks every day. The visual content of these images contains rich knowledge for many uses, such as social categorization and recommendation. Mobile image labeling has, therefore, been proposed to understand the visual content and received intensive attention in recent years. In this paper, we present a novel mobile image labeling scheme on the cloud, in which mobile images are first and efficiently transmitted to the cloud by Hamming compressed sensing, such that the heavy computation for image understanding is transferred to the cloud for quick response to the queries of the users. On the cloud, we design a sparse correntropy framework for robustly learning the semantic content of mobile images, based on which the relevant tags are assigned to the query images. The proposed framework (called maximum correntropy-based mobile image labeling) is very insensitive to the noise and the outliers, and is optimized by a half-quadratic optimization technique. We theoretically show that our image labeling approach is more robust than the squared loss, absolute loss, Cauchy loss, and many other robust loss function-based sparse coding methods. To further understand the proposed algorithm, we also derive its robustness and generalization error bounds. Finally, we conduct experiments on the PASCAL VOC'07 data set and empirically demonstrate the effectiveness of the proposed robust sparse coding method for mobile image labeling. 1991-2012 IEEE.
Number of references:77
Main heading:Social networking (online)
Controlled terms:Cloud computing - Codes (symbols) - Error analysis - Image coding - Quadratic programming - Semantics
Uncontrolled terms:Correntropy - Generalization error bounds - Half-quadratic optimizations - Mobile images - Online social networkings - Robust sparse coding - Semantic content - Sparse coding
Classification code:722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing
DOI:10.1109/TCSVT.2016.2539778
Funding details: Number: 61572486, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61263048, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61572388, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61432014, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61402458, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61572486, Grant 61572388, Grant 61432014, Grant 61402458, and Grant 61263048

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<189>

Accession number:20170903396367
Title:Fabrication of micro hole array on the surface of CVD ZnS by scanning ultrafast pulse laser for antireflection
Authors:Li, Yangping (1); Zhang, Tianhui (1); Fan, Siling (1); Cheng, Guanghua (2)
Author affiliation:(1) State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an; Shaanxi; 710072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; Shaanxi; 710119, China
Corresponding author:Li, Yangping(Yangping.li@hotmail.com)
Source title:Optical Materials
Abbreviated source title:Opt Mater
Volume:66
Issue date:April 1, 2017
Publication year:2017
Pages:356-360
Language:English
ISSN:09253467
CODEN:OMATET
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:Chemical vapor deposited (CVD) ZnS is a promising long-wave infrared (8–12 μm) window material. Yet antireflection is necessary since Fresnel reflection from its surface is high due to the high refractive index of ZnS. Sub-wavelength structured surface of micro hole array was fabricated on CVD ZnS by scanning ultrafast pulse laser ablation. The effects of beam profile, pulse width and beam power on the radius and morphology of the holes were studied. Gaussian beam can cause severe melted-resolidified layers around the hole, yet Bessel beam only resulted in thin ribbon around the hole. The picosecond Bessel laser is more suitable than femtosecond laser for ablating holes on ZnS. The radius of the holes increases with increasing the Bessel beam pulse width and the beam power. But larger power may cause circle grooves around the central holes. Ordered hole array was fabricated on single side of CVD ZnS and antireflection was realized. 2017 Elsevier B.V.
Number of references:18
Main heading:Gaussian beams
Controlled terms:Ablation - Bessel functions - Chemical vapor deposition - Fabrication - II-VI semiconductors - Infrared radiation - Laser ablation - Laser beams - Refractive index - Zinc - Zinc sulfide
Uncontrolled terms:Chemical vapor deposited - Fresnel reflections - High refractive index - Long wave infrared - Pulse power - Pulsewidths - Structured surfaces - Ultrafast pulse
Classification code:546.3 Zinc and Alloys - 641.2 Heat Transfer - 711 Electromagnetic Waves - 741.1 Light/Optics - 744.8 Laser Beam Interactions - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 921 Mathematics
DOI:10.1016/j.optmat.2017.02.019
Funding details: Number: B08040, Acronym: -, Sponsor: -;Number: 2015ZF53073, Acronym: -, Sponsor: -;Number: 110-QP-2014, Acronym: -, Sponsor: -;Number: SKLST201503, Acronym: -, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: State Key Laboratory of Heavy Oil Processing;Number: -, Acronym: -, Sponsor: State Key Laboratory of Transient Optics and Photonics;
Funding text:This Research was supported by the Aviation Science Fund (Grant no. 2015ZF53073), the Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences (Grant no. SKLST201503), the Fund of the State Key Laboratory of Solidification Processing (NWPU), China (Grant No. 110-QP-2014) and the 111 Project (Contract No. B08040).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<190>

Accession number:20180304652589
Title:Entangled-photons compressive ghost imaging based on spatial correlation of sensing matrix
Authors:Liu, Dawei (1, 2); Li, Lifei (1); Geng, Yixing (1); Kang, Yan (1, 2); Zhang, Tongyi (1, 2); Zhao, Wei (1, 2); Dong, Weibin (3); Shi, Kunlin (3)
Author affiliation:(1) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Xi'an Institute of Electro-Mechanical Information Technology, Xi'an, China
Corresponding author:Li, Lifei(lilifei@opt.ac.cn)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:12
Issue date:December 2017
Publication year:2017
Article number:123108
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:Using the entangled photons generated by the spontaneous parametric down conversion as a light source, we demonstrate the first quantum ghost imaging system with a modified compressive sensing technique based on the spatial correlation of sensing matrix (SCCS). The ghost image is achieved at 16.27% sampling ratio of raster scanning and 0.65 photons/pixel at each measurement on average. Our results show that image quality and photon-utilization efficiency are remarkably enhanced in comparison with the traditional compressive imaging technique, due to the sensing matrix and noise-free measurement vector rebuilt by SCCS technique. It suggests the great potential of SCCS technique applied in quantum imaging and other quantum optics fields, such as quantum charactering and quantum state tomography to use the information loaded in each photon with high efficiency. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:20
Main heading:Quantum entanglement
Controlled terms:Compressed sensing - Efficiency - Image enhancement - Light - Light sources - Optical frequency conversion - Photons - Quantum optics
Uncontrolled terms:Compressive imaging - Compressive sensing - Entangled photons - Ghost imaging - Quantum ghost imaging - Quantum state tomography - Spatial correlations - Spontaneous parametric down conversion
Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 741.1.1 Nonlinear Optics - 913.1 Production Engineering - 931.3 Atomic and Molecular Physics - 931.4 Quantum Theory; Quantum Mechanics
Numerical data indexing:Percentage 1.63e+01%
DOI:10.1117/1.OE.56.12.123108
Funding details: Number: KH2016003, Acronym: -, Sponsor: -;Number: XAB2015B24, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2017ZDJC-27, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61475191, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by NSFC (Grant No. 61475191), CAS "Light of West China" Program (Grant No. XAB2015B24), CNGC "Process and technology basis" program (Grant No. KH2016003) and Natural Science Basics Research Plan in Shaanxi Province of China (Grant No. 2017ZDJC-27).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<191>

Accession number:20173804172486
Title:Discrete Nonnegative Spectral Clustering
Authors:Yang, Yang (1); Shen, Fumin (1); Huang, Zi (2); Shen, Heng Tao (1); Li, Xuelong (3)
Author affiliation:(1) Center for Future Media, School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu Shi; 610051, China; (2) School of Information Technology and Electrical Engineering, University of Queensland, St Lucia; QLD; 4072, Australia; (3) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Shen, Heng Tao(shenhengtao@hotmail.com)
Source title:IEEE Transactions on Knowledge and Data Engineering
Abbreviated source title:IEEE Trans Knowl Data Eng
Volume:29
Issue:9
Issue date:September 1, 2017
Publication year:2017
Pages:1834-1845
Article number:7920371
Language:English
ISSN:10414347
CODEN:ITKEEH
Document type:Journal article (JA)
Publisher:IEEE Computer Society
Abstract:Spectral clustering has been playing a vital role in various research areas. Most traditional spectral clustering algorithms comprise two independent stages (e.g., first learning continuous labels and then rounding the learned labels into discrete ones), which may cause unpredictable deviation of resultant cluster labels from genuine ones, thereby leading to severe information loss and performance degradation. In this work, we study how to achieve discrete clustering as well as reliably generalize to unseen data. We propose a novel spectral clustering scheme which deeply explores cluster label properties, including discreteness, nonnegativity, and discrimination, as well as learns robust out-of-sample prediction functions. Specifically, we explicitly enforce a discrete transformation on the intermediate continuous labels, which leads to a tractable optimization problem with a discrete solution. Besides, we preserve the natural nonnegative characteristic of the clustering labels to enhance the interpretability of the results. Moreover, to further compensate the unreliability of the learned clustering labels, we integrate an adaptive robust module with &ell; 2,p loss to learn prediction function for grouping unseen data. We also show that the out-of-sample component can inject discriminative knowledge into the learning of cluster labels under certain conditions. Extensive experiments conducted on various data sets have demonstrated the superiority of our proposal as compared to several existing clustering approaches. 1989-2012 IEEE.
Number of references:52
Main heading:Clustering algorithms
Controlled terms:Optimization
Uncontrolled terms:Discrete optimization - Discrete transformation - Non negatives - Optimization problems - Performance degradation - Prediction function - Spectral clustering - Spectral clustering algorithms
Classification code:903.1 Information Sources and Analysis - 921.5 Optimization Techniques
DOI:10.1109/TKDE.2017.2701825
Funding details: Number: 61632007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZYGX2015J055, Acronym: -, Sponsor: -;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Project 61572108, Project 61632007 and Project 61502081, the National Thousand-Young-Talents Program of China, and the Fundamental Research Funds for the Central Universities under Project ZYGX2014Z007 and Project ZYGX2015J055.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<192>

Accession number:20181204935834
Title:Multi-channel phase-sensitive amplification in nonlinear waveguides
Authors:Zhang, Y. (1); Reimer, C. (1); Wu, J. (1); Roztocki, P. (1); Wetzel, B. (1, 2); Little, B.E. (3); Chu, S.T. (4); Moss, D.J. (5); Kues, M. (1, 6); Morandotti, R. (1, 7)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) Department of Physics and Astronomy, University of Sussex, Falmer Brighton; BN1 9QH, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi'an, China; (4) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, Hong Kong; (5) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (6) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.
Volume:2017-January
Part number:1 of 1
Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Issue date:October 25, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781943580279
Document type:Conference article (CA)
Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:131854
Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We demonstrate on-chip multi-channel phase-sensitive amplification in a nonlinear waveguide, achieving 5 dB net gain and 15 dB extinction ratio. We show the manipulation of individual channels in a multi-channel scheme through controlling the initial phases. 2017 IEEE.
Number of references:11
Main heading:Waveguides
Uncontrolled terms:Extinction ratios - Initial phasis - Multi channel - Net gain - Nonlinear waveguides - On chips
Classification code:714.3 Waveguides
Numerical data indexing:Decibel 1.50e+01dB, Decibel 5.00e+00dB
DOI:10.1364/CLEO_AT.2017.JTh2A.91

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<193>

Accession number:20182405306848
Title:Optical pulling nanoparticles with nonparaxial accelerating beams
Authors:Han, Guoxia (1, 2); Huang, Zhangxiang (1, 2); An, Sha (2); Peng, Tong (2); Wang, Meirong (3); Yao, Baoli (2); Zhang, Peng (2)
Author affiliation:(1) College of Science, China University of Petroleum (East China), Qingdao, Shandong; 266580, China; (2) State of Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, shaanxi; 710119, China; (3) Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710129, China
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Abbreviated source title:Opto-Electron. Commun. Conf., OECC Photonics Glob. Conf., PGC
Volume:2017-November
Part number:1 of 1
Issue title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Issue date:November 17, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781509062935
Document type:Conference article (CA)
Conference name:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Conference date:July 31, 2017 - August 4, 2017
Conference location:Singapore, Singapore
Conference code:132616
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We propose and theoretically demonstrate the generation of optical traction of nanoparticles through nonparaxial accelerating beams. A convenient optical pulling and manipulating of nanoparticles along curved trajectory is achieved, and the method to determine the conditions of optical traction is also presented. 2017 IEEE.
Number of references:9
Main heading:Photonics
Controlled terms:Nanoparticles
Uncontrolled terms:Nonparaxial - Pulling force
Classification code:741.1 Light/Optics - 761 Nanotechnology - 933 Solid State Physics
DOI:10.1109/OECC.2017.8114892

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<194>

Accession number:20172203698736
Title:Online measurement of atmospheric density based on space vehicle platform
Authors:Wang, Chao-Jie (1, 2); Wang, Bo (3); Guo, Hui-Nan (4); Qin, Lai-An (5)
Author affiliation:(1) National University of Defense Technology, Changsha; 410073, China; (2) National Key Laboratory of Science and Technology on Nearspace Vehicle Technology, Beijing; 100076, China; (3) Beijing No. 8 High School, Beijing; 100033, China; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei; 230031, China
Corresponding author:Qin, Lai-An(qinlaian@163.com)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:1
Issue date:January 1, 2017
Publication year:2017
Pages:15-20
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:In view of the high-altitude atmospheric density fluctuation and the difficulty to identify aerodynamic characteristics of the aircraft in orbit, a technical solution for atmospheric density measurement by lidar based on Rayleigh scattering principle was proposed. The online data of atmospheric density at different distances was acquired through the analysis of the laser backscattering Rayleigh optical cylinder, which was captured by the Electron-Multiplying Charge Coupled Device (EMCCD) in the measuring flow field based on the principle that the density of gas molecules is in direct proportion to Rayleigh scattering intensity. Furthermore the atmospheric density online measuring instrument was developed and calibrated. Experimental and calibration results show that the online measurement precision of atmospheric density is controlled within 5%. The instrument has a promising application in optimization of spacecraft appearance and improvement of aerodynamic identification. 2017, Science Press. All right reserved.
Number of references:12
Main heading:Density of gases
Controlled terms:Aerodynamics - Atmospheric density - Charge coupled devices - Optical radar - Orbits - Rayleigh scattering - Spacecraft
Uncontrolled terms:Aerodynamic characteristics - Electron multiplying charge coupled devices - Laser backscattering - On-line measurement - Online measuring - Scattering intensity - Space vehicles - Technical solutions
Classification code:443.1 Atmospheric Properties - 651.1 Aerodynamics, General - 655.1 Spacecraft, General - 711 Electromagnetic Waves - 714.2 Semiconductor Devices and Integrated Circuits - 716.2 Radar Systems and Equipment - 931.2 Physical Properties of Gases, Liquids and Solids
Numerical data indexing:Percentage 5.00e+00%
DOI:10.3788/OPE.20172501.0015

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<195>

Accession number:20172703894842
Title:Robust Web Image Annotation via Exploring Multi-Facet and Structural Knowledge
Authors:Hu, Mengqiu (1); Yang, Yang (1); Shen, Fumin (1); Zhang, Luming (2); Shen, Heng Tao (1); Li, Xuelong (3)
Author affiliation:(1) Center for Future Media, School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu; 610051, China; (2) Department of CSIE, Hefei University of Technology, Hefei; 230009, China; (3) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Yang, Yang(dlyyang@gmail.com)
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:10
Issue date:October 2017
Publication year:2017
Pages:4871-4884
Article number:7953515
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Driven by the rapid development of Internet and digital technologies, we have witnessed the explosive growth of Web images in recent years. Seeing that labels can reflect the semantic contents of the images, automatic image annotation, which can further facilitate the procedure of image semantic indexing, retrieval, and other image management tasks, has become one of the most crucial research directions in multimedia. Most of the existing annotation methods, heavily rely on well-labeled training data (expensive to collect) and/or single view of visual features (insufficient representative power). In this paper, inspired by the promising advance of feature engineering (e.g., CNN feature and scale-invariant feature transform feature) and inexhaustible image data (associated with noisy and incomplete labels) on the Web, we propose an effective and robust scheme, termed robust multi-view semi-supervised learning (RMSL), for facilitating image annotation task. Specifically, we exploit both labeled images and unlabeled images to uncover the intrinsic data structural information. Meanwhile, to comprehensively describe an individual datum, we take advantage of the correlated and complemental information derived from multiple facets of image data (i.e., multiple views or features). We devise a robust pairwise constraint on outcomes of different views to achieve annotation consistency. Furthermore, we integrate a robust classifier learning component via &ell;2,ploss, which can provide effective noise identification power during the learning process. Finally, we devise an efficient iterative algorithm to solve the optimization problem in RMSL. We conduct comprehensive experiments on three different data sets, and the results illustrate that our proposed approach is promising for automatic image annotation. 2017 IEEE.
Number of references:74
Main heading:Image annotation
Controlled terms:Content based retrieval - Image analysis - Iterative methods - Learning algorithms - Semantics - Supervised learning
Uncontrolled terms:Labeled training data - Multi-view learning - Optimization problems - Scale invariant feature transforms - Semi- supervised learning - Structural information - Structural knowledge - Web image annotations
Classification code:921.6 Numerical Methods
DOI:10.1109/TIP.2017.2717185
Funding details: Number: 61632007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61572108, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61502081, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZYGX2015J055, Acronym: -, Sponsor: -;Number: ZYGX2014Z007, Acronym: -, Sponsor: -;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Project 61572108, Project 61632007, and Project 61502081, in part by the National Thousand-Young-Talents Program of China, and in part by the Fundamental Research Funds for the Central Universities under Project ZYGX2014Z007 and Project ZYGX2015J055.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<196>

Accession number:20182205249292
Title:Sensorless control of three-phase permanent magnet synchronous motor based on fundamental wave mathematical model
Authors:Xing, Shi Chen (1); Chen, Wang (2)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Xi'an, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Xing, Shi Chen(494620933@qq.com)
Source title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Abbreviated source title:Proc. - Int. Conf. Cybern., Robot. Control, CRC
Volume:2018-January
Part number:1 of 1
Issue title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Issue date:July 2, 2017
Publication year:2017
Pages:89-93
Language:English
ISBN-13:9781538606773
Document type:Conference article (CA)
Conference name:2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Conference date:July 21, 2017 - July 23, 2017
Conference location:Chengdu, Sichuan, China
Conference code:135561
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In the case of vector control using magnetic field orientation, in order to achieve high performance three-phase PMSM (Permanent Magnet Synchronous Motor) control system, generally we need to obtain an accurate rotor position and speed information, but the use of mechanical sensors will increase the use of system cost, size and quality, and the use of the environment has a more stringent requirements. Sensorless control technology detects the motor winding and focusing on the relevant electrical signals and uses a certain control algorithm to achieve the rotor position and speed estimates. It represents the three-phase PMSM control system development trend. This paper focuses on the sensorless control of three-phase permanent magnet synchronous motor based on the fundamental wave mathematical model. This method relies on the rotational speed-related quantities (such as the generated back electromotive force) in the three-phase PMSM fundamental excitation mathematical model for rotor position and velocity. It is estimated that since the signal-to-noise ratio of the useful signal is low when the motor is running at zero speed and very low speed, it is usually difficult to extract. Thus, ultimately, dependence on the fundamental excitation ultimately results in failure of rotor position and velocity detection at zero speed and low speed. At present, the commonly used algorithms include sliding mode observer algorithm, model reference adaptive control algorithm and extended Kalman filter algorithm. In this paper, the sliding mode observer algorithm is analyzed and modeled. This paper firstly introduces the basic concept of sliding mode control, and then analyzes the commonly used traditional sliding mode observer algorithm and the sliding mode observer algorithm in synchronous rotating coordinate system. Secondly, the permanent magnet synchronous motor control system based on two algorithms is simulated in Matlab2016 / Simulink environment. The response curves of the two control system simulation models under the condition of external disturbance are analyzed.We can get a conclusion that by selecting the appropriate controller parameters, SMO (sliding mode observer)-based three-phase PMSM sensorless control technology can meet the needs of the actual motor control performance. 2017 IEEE.
Number of references:5
Main heading:Sensorless control
Controlled terms:AC motors - Control systems - Estimation - Kalman filters - Model reference adaptive control - Permanent magnets - Quality control - Robotics - Signal to noise ratio - Sliding mode control - Speed - Synchronous motors - Vector control (Electric machinery)
Uncontrolled terms:Back electromotive force - Co-ordinate system - Control system simulations - Extended Kalman filter algorithm - Magnetic field orientations - Permanent Magnet Synchronous Motor - Rotating coordinate system - Sliding mode observers
Classification code:704.1 Electric Components - 705.3.1 AC Motors - 716.1 Information Theory and Signal Processing - 731 Automatic Control Principles and Applications - 913.3 Quality Assurance and Control - 921 Mathematics
DOI:10.1109/CRC.2017.29

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<197>

Accession number:20182105211474
Title:Demonstration of Real-Time Modulation-Adaptable Transmitter
Authors:Yan, Shuangyi (1); Beldachi, Arash Farhadi (1); Qian, Fengchen (1, 2); Kondepu, Koteswararao (1); Yan, Yan (1); Jackson, Chris (1); Nejabati, Reza (1); Simeonidou, DImitra (1)
Author affiliation:(1) High Performance Networks Group, University of Bristol, United Kingdom; (2) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China
Source title:European Conference on Optical Communication, ECOC
Abbreviated source title:Eur Conf Opt Commun ECOC
Volume:2017-September
Part number:1 of 1
Issue title:43rd European Conference on Optical Communication, ECOC 2017
Issue date:July 2, 2017
Publication year:2017
Pages:1-3
Language:English
CODEN:85MOAV
ISBN-13:9781538656242
Document type:Conference article (CA)
Conference name:43rd European Conference on Optical Communication, ECOC 2017
Conference date:September 17, 2017 - September 21, 2017
Conference location:Gothenburg, Sweden
Conference code:136165
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We demonstrate a 26 Gbaud real-time quick-reconfigurable 16QAM/QPSK-adaptable transmitter. The modulation format can be switched in less than a second by an RMAT agent. The FPGA-driven reconfigurable transmitter can work as a generic edge-node interface for traffic aggregation. 2017 IEEE.
Number of references:4
Main heading:Optical communication
Controlled terms:Modulation - Transmitters
Uncontrolled terms:Edge nodes - Modulation formats - Real time - Reconfigurable - Reconfigurable transmitters - Traffic aggregation
Classification code:717.1 Optical Communication Systems
DOI:10.1109/ECOC.2017.8346029

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<198>

Accession number:20163002643529
Title:A Biologically Inspired Appearance Model for Robust Visual Tracking
Authors:Zhang, Shengping (1); Lan, Xiangyuan (2); Yao, Hongxun (1); Zhou, Huiyu (3); Tao, Dacheng (4); Li, Xuelong (5)
Author affiliation:(1) School of Computer Science and Technology, Harbin Institute of Technology, Weihai, China; (2) Department of Computer Science, Hong Kong Baptist University, Hong Kong, Hong Kong; (3) School of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast, Belfast, United Kingdom; (4) Centre for Quantum Computation and Intelligent Systems, Faculty of Engineering and Information Technology, University of Technology, 81 Broadway Street Ultimo, Sydney; NSW, Australia; (5) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi, China
Corresponding author:Zhang, Shengping(s.zhang@hit.edu.cn)
Source title:IEEE Transactions on Neural Networks and Learning Systems
Abbreviated source title:IEEE Trans. Neural Networks Learn. Sys.
Volume:28
Issue:10
Issue date:October 2017
Publication year:2017
Pages:2357-2370
Article number:7516592
Language:English
ISSN:2162237X
E-ISSN:21622388
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In this paper, we propose a biologically inspired appearance model for robust visual tracking. Motivated in part by the success of the hierarchical organization of the primary visual cortex (area V1), we establish an architecture consisting of five layers: Whitening, rectification, normalization, coding, and pooling. The first three layers stem from the models developed for object recognition. In this paper, our attention focuses on the coding and pooling layers. In particular, we use a discriminative sparse coding method in the coding layer along with spatial pyramid representation in the pooling layer, which makes it easier to distinguish the target to be tracked from its background in the presence of appearance variations. An extensive experimental study shows that the proposed method has higher tracking accuracy than several state-of-the-art trackers. 2012 IEEE.
Number of references:75
Main heading:Codes (symbols)
Controlled terms:Object recognition
Uncontrolled terms:Appearance modeling - biologically inspiration - Biologically inspired - Hierarchical organizations - Primary visual cortex - Sparse coding - Tracking accuracy - Visual Tracking
Classification code:723.2 Data Processing and Image Processing
DOI:10.1109/TNNLS.2016.2586194

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<199>

Accession number:20174004234853
Title:HDPA: Hierarchical deep probability analysis for scene parsing
Authors:Yuan, Yuan (1); Jiang, Zhiyu (1, 2); Wangm, Qi (3)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) 2University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China; (3) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China
Corresponding author:Wangm, Qi(crabwq@nwpu.edu.cn)
Source title:Proceedings - IEEE International Conference on Multimedia and Expo
Abbreviated source title:Proc. IEEE Int. Conf. Multimedia Expo
Volume:0
Part number:1 of 1
Issue title:2017 IEEE International Conference on Multimedia and Expo, ICME 2017
Issue date:August 28, 2017
Publication year:2017
Pages:313-318
Article number:8019367
Language:English
ISSN:19457871
E-ISSN:1945788X
ISBN-13:9781509060672
Document type:Conference article (CA)
Conference name:2017 IEEE International Conference on Multimedia and Expo, ICME 2017
Conference date:July 10, 2017 - July 14, 2017
Conference location:Hong Kong, Hong kong
Conference code:130293
Publisher:IEEE Computer Society
Abstract:Scene parsing is an important task in computer vision and many issues still need to be solved. One problem is about the non-unified framework for predicting things and stuff and the other one refers to the inadequate description of contextual information. In this paper, we address these issues by proposing a Hierarchical Deep Probability Analysis(HDPA) method which particularly exploits the power of probabilistic graphical model and deep convolutional neural network on pixel-level scene parsing. To be specific, an input image is initially segmented and represented through a CNN framework under Gaussian pyramid. Then the graphical models are built under each scale and the labels are ultimately predicted by structural analysis. Three contributions are claimed: unified framework for scene labeling, hierarchical probabilistic graphical modeling and adequate contextual information consideration. Experiments on three benchmarks show that the proposed method outperforms the state-of-the-arts in scene parsing. 2017 IEEE.
Number of references:31
Main heading:Formal languages
Controlled terms:Computer vision - Deep neural networks - Graphic methods - Image segmentation - Neural networks - Semantics - Speech recognition
Uncontrolled terms:Contextual information - Deep convolutional neural networks - Gaussian pyramids - Probabilistic graphical models - Probability analysis - Scene parsing - Semantic segmentation - Unified framework
Classification code:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723.5 Computer Applications - 751.5 Speech
DOI:10.1109/ICME.2017.8019367
Funding details: Number: 2013CB336500, Acronym: -, Sponsor: -;Number: 61379094, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 60632018, Acronym: -, Sponsor: -;Number: 61232010, Acronym: -, Sponsor: -;
Funding text:?Qi Wang is the corresponding author of this paper. This work is supported by the National Basic Research Program of China (Youth 973 Program) (Grant No. 2013CB336500), the State Key Program of National Natural Science of China (Grant No. 60632018, 61232010), and the National Science Foundation of China(Grandt No. 61379094).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<200>

Accession number:20183705812406
Title:Analysis and test study of thermal deformation on a grid reinforced CFRP mirror
Authors:Xu, Liang (1); Ding, Jiao-Teng (1); Wang, Yong-Jie (1); Xie, Yong-Jie (1); Ma, Zhen (1); Fan, Xue-Wu (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:ICCM International Conferences on Composite Materials
Abbreviated source title:ICCM Int. Conf. Compos. Mater.
Volume:2017-August
Part number:1 of 1
Issue title:21st International Conference on Composite Materials, ICCM 2017
Issue date:2017
Publication year:2017
Language:English
Document type:Conference article (CA)
Conference name:21st International Conference on Composite Materials, ICCM 2017
Conference date:August 20, 2017 - August 25, 2017
Conference location:Xi'an, China
Conference code:138793
Publisher:International Committee on Composite Materials
Abstract:Due to the low density and extremely low thermal expansion, carbon fibre reinforced plastic (CFRP) is one of potential materials applied as precise dimension components. High precise structures, such as antenna reflectors and mirrors, require very strict thermal stability. However, the CFRP laminate usually companied with large thermal deformation, because of align error, thickness error, fiber and resin uneven distribution in the preparation. Therefore, a novel grid reinforced structure was adopted to improve stiffness and resistance of thermal deformation. The validity of the design is verified by finite element method. The thermal deformation test based on the vacuum tank verifies the reliability of the finite element analysis results. For 150mm CFRP mirror, the test results show that the thermal deformation RMS is only 16nm when 4.5 raised, so thermal stability is just about 3.5nm/, and satisfied the requirements in high precise structure application. 2017 International Committee on Composite Materials. All rights reserved.
Number of references:12
Funding details: Number: 51402351, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This paper has been supported by the National Science Foundation of China under Grant No.51402351

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<201>

Accession number:20175104550041
Title:Bidirectional adaptive feature fusion for remote sensing scene classification
Authors:Ji, Weijun (1, 2); Li, Xuelong (1); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China
Corresponding author:Lu, Xiaoqiang(luxiaoqiang@opt.ac.cn)
Source title:Communications in Computer and Information Science
Abbreviated source title:Commun. Comput. Info. Sci.
Volume:772
Part number:2 of 3
Issue title:Computer Vision - 2nd CCF Chinese Conference, CCCV 2017, Proceedings
Issue date:2017
Publication year:2017
Pages:486-497
Language:English
ISSN:18650929
ISBN-13:9789811073014
Document type:Conference article (CA)
Conference name:2nd Chinese Conference on Computer Vision, CCCV 2017
Conference date:October 11, 2017 - October 14, 2017
Conference location:Tianjin, China
Conference code:208009
Publisher:Springer Verlag
Abstract:Convolutional neural networks (CNN) have been excellent for scene classification in nature scene. However, directly using the pre-trained deep models on the aerial image is not proper, because of the spatial scale variability and rotation variability of the HSR remote sensing images. In this paper, a bidirectional adaptive feature fusion strategy is investigated to deal with the remote sensing scene classification. The deep learning feature and the SIFT feature are fused together to get a discriminative image presentation. The fused feature can not only describe the scenes effectively by employing deep learning feature but also overcome the scale and rotation variability with the usage of the SIFT feature. By fusing both SIFT feature and global CNN feature, our method achieves state-of-the-art scene classification performance on the UCM and the AID datasets. Springer Nature Singapore Pte Ltd. 2017.
Number of references:26
Main heading:Classification (of information)
Controlled terms:Antennas - Computer vision - Deep learning - Neural networks - Remote sensing
Uncontrolled terms:Adaptive features - Convolutional Neural Networks (CNN) - Feature fusion - Image presentations - Remote sensing images - Scale and rotation - Scene classification - Spatial-scale variability
Classification code:716.1 Information Theory and Signal Processing - 723.5 Computer Applications
DOI:10.1007/978-981-10-7302-1_40

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<202>

Accession number:20174104242953
Title:Parameter free large margin nearest neighbor for distance metric learning
Authors:Song, Kun (1); Nie, Feiping (2); Han, Junwei (1); Li, Xuelong (3)
Author affiliation:(1) School of Automation, Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) School of Computer Science, Center for OPTIMAL, Northwestern Polytechnical University, Xi'an; 710072, China; (3) Center for OPTIMAL, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Nie, Feiping(feipingnie@gmail.com)
Source title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Abbreviated source title:AAAI Conf. Artif. Intell., AAAI
Part number:1 of 1
Issue title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Issue date:2017
Publication year:2017
Pages:2555-2561
Language:English
Document type:Conference article (CA)
Conference name:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Conference date:February 4, 2017 - February 10, 2017
Conference location:San Francisco, CA, United states
Conference code:130407
Sponsor:Amazon; Artificial Intelligence; Baidu; et al.; IBM; Tencent
Publisher:AAAI press
Abstract:We introduce a novel supervised metric learning algorithm named parameter free large margin nearest neighbor (PFLMNN) which can be seen as an improvement of the classical large margin nearest neighbor (LMNN) algorithm. The contributions of our work consist of two aspects. First, our method discards the cost term which shrinks the distances between inquiry input and its k target neighbors (the k nearest neighbors with same labels as inquiry input) in LMNN, and only focuses on improving the action to push the imposters (the samples with different labels form the inquiry input) apart out of the neighborhood of inquiry. As a result, our method does not have the parameter needed to tune on the validating set, which makes it more convenient to use. Second, by leveraging the geometry information of the imposters, we construct a novel cost function to penalize the small distances between each inquiry and its imposters. Different from LMNN considering every imposter located in the neighborhood of each inquiry, our method only takes care of the nearest imposters. Because when the nearest imposter is pushed out of the neighborhood of its inquiry, other imposters would be all out. In this way, the constraints in our model are much less than that of LMNN, which makes our method much easier to find the optimal distance metric. Consequently, our method not only learns a better distance metric than LMNN, but also runs faster than LMNN. Extensive experiments on different data sets with various sizes and difficulties are conducted, and the results have shown that, compared with LMNN, PFLMNN achieves better classification results.
Copyright ? 2017, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.
Number of references:26
Main heading:Learning algorithms
Controlled terms:Artificial intelligence - Classification (of information) - Cost functions - Nearest neighbor search
Uncontrolled terms:Classification results - Distance Metric Learning - Distance metrics - Geometry information - K-nearest neighbors - Large margin nearest neighbors
Classification code:716.1 Information Theory and Signal Processing - 723.4 Artificial Intelligence - 921.5 Optimization Techniques
Funding details: Number: 61473231, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61522207, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Science Foundation of China under Grant 61473231 and Grant 61522207.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<203>

Accession number:20175004542616
Title:Thermal characteristics of kW-level conduction-cooled semiconductor laser array
Authors:Zhu, Qiwen (1, 2); Zhang, Pu (1); Wu, Dihai (1); Nie, Zhiqiang (1); Xiong, Lingling (1); Liu, Xingsheng (1, 3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Focuslight Technologies Co., LTD, Xi'an; 710119, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:10
Issue date:October 25, 2017
Publication year:2017
Article number:1005003
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:With the increase in output power of high power semiconductor lasers(HPSLs), thermal management is one of the critical bottlenecks affecting the optical-electrical performance and reliability of HPSLs. Thermal characteristics of a kW-level conduction cooled semiconductor laser array were analyzed based on numerical simulations and experiments. Firstly, transient thermal behavior was studied using finite element method (FEM). There is significant "thermal crosstalk" behavior among the semiconductor laser bars with pulse width greater than 250 μs. It shows thermal resistances along horizontal and vertical directions are 64.7% and 35.3%, respectively, indicating that heat mainly dissipates along horizontal direction. 74.9% of thermal resistance along horizontal direction and 66.5% of thermal resistance along vertical direction origin from CuW layer, which shows that CuW is the most significant factor affecting the efficiency of thermal dissipation. Based on accumulated average temperature method, the simulated temperature differences are 2.13, 1.47, 0.75℃ at the repetition frequencies of 20, 30 and 40 Hz compared with that at the frequency of 50 Hz. Average junction temperature rises at different repetition frequency have been measured using spectral method, and the temperature differences at the repetition frequencies of 20, 30 and 40 Hz are 2.33, 1.56, 0.78℃, respectively. The average error is less than 6.85% between experiment results and numerical simulation. It shows that the simulated transient thermal resistance is coincident with the experimental result. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:12
Main heading:Semiconductor lasers
Controlled terms:Binary alloys - Copper alloys - Finite element method - Heat resistance - High power lasers - Numerical models
Uncontrolled terms:Conduction cooled - Electrical performance - High power semiconductor laser - Junction temperatures - KW-level - Semiconductor laser arrays - Temperature differences - Thermal characteristics
Classification code:544.2 Copper Alloys - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 921 Mathematics - 921.6 Numerical Methods
Numerical data indexing:Frequency 3.00e+01Hz, Frequency 4.00e+01Hz, Frequency 5.00e+01Hz, Percentage 3.53e+01%, Percentage 6.47e+01%, Percentage 6.65e+01%, Percentage 6.85e+00%, Percentage 7.49e+01%, Time 2.50e-04s
DOI:10.3788/IRLA201746.1005003

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<204>

Accession number:20170603336371
Title:A novel ZVS high voltage power supply for micro-channel plate photomultiplier tubes
Authors:Pei, Chengquan (1); Tian, Jinshou (2); Liu, Zhen (1); Qin, Hong (3); Wu, Shengli (1)
Author affiliation:(1) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Computer Science and Technology, Xi'an University of Science and Technology, Xi'an; 710054, China
Corresponding author:Wu, Shengli(slwu@mail.xjtu.edu.cn)
Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abbreviated source title:Nucl Instrum Methods Phys Res Sect A
Volume:851
Issue date:April 11, 2017
Publication year:2017
Pages:43-49
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:A novel resonant high voltage power supply (HVPS) with zero voltage switching (ZVS), to reduce the voltage stress on switching devices and improve conversion efficiency, is proposed. The proposed HVPS includes a drive circuit, a transformer, several voltage multiplying circuits, and a regulator circuit. The HVPS contains several secondary windings that can be precisely regulated. The proposed HVPS performed better than the traditional resistor voltage divider, which requires replacing matching resistors resulting in resistor dispersibility in the Micro-Channel Plate (MCP). The equivalent circuit of the proposed HVPS was established and the operational principle analyzed. The entire switching element can achieve ZVS, which was validated by a simulation and experiments. The properties of this HVPS were tested including minimum power loss (240 mW), maximum power loss (1 W) and conversion efficiency (85%). The results of this research are that the proposed HVPS was suitable for driving the micro-channel plate photomultiplier tube (MCP-PMT). It was therefore adopted to test the MCP-PMT, which will be used in Daya Bay reactor neutrino experiment II in China. 2017 Elsevier B.V.
Number of references:16
Main heading:Image storage tubes
Controlled terms:Barium compounds - Conversion efficiency - Efficiency - Electric network analysis - Equivalent circuits - Multiplying circuits - Photomultipliers - Resistors - Voltage dividers - Zero voltage switching
Uncontrolled terms:High voltage power supply - Micro channel plate - Micro-channel plate photomultiplier tubes - Neutrino experiments - Operational principles - Push pull - Resonant converters - Switching elements
Classification code:525.5 Energy Conversion Issues - 703.1.1 Electric Network Analysis - 704.2 Electric Equipment - 714.1 Electron Tubes - 721.3 Computer Circuits - 913.1 Production Engineering
Numerical data indexing:Percentage 8.50e+01%
DOI:10.1016/j.nima.2017.01.044

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<205>

Accession number:20181204933222
Title:An ultra-narrow spectral width passively mode-locked laser
Authors:Kues, Michael (1, 2); Reimer, Christian (1); Wetzel, Benjamin (1, 3); Roztocki, Piotr (1); Little, Brent E. (4); Chu, Sai T. (5); Hansson, Tobias (1); Viktorov, Evgeny A. (6); Moss, David J. (1, 7); Morandotti, Roberto (1)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) School of Mathematical and Physical Sciences, University of Sussex, Sussex House, Falmer, Brighton; BN1 9RH, United Kingdom; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (5) City University of Hong Kong, Department of Physics and Materials Science, Tat Chee Avenue, Hong Kong; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Center for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia
Corresponding author:Kues, Michael(michael.kues@emt.inrs.ca)
Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.
Volume:2017-January
Part number:1 of 1
Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Issue date:October 25, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781943580279
Document type:Conference article (CA)
Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:131854
Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We demonstrate a passively mode-locked laser emitting 4.3 nanosecond Fourier-limited pulses with a record low spectral bandwidth of 104.9 MHz (more than 100 times narrower than previous realizations), allowing its full characterization in the radio-frequency domain. 2017 IEEE.
Number of references:12
Main heading:Mode-locked fiber lasers
Controlled terms:Fourier series - Frequency domain analysis - Lasers - Passive mode locking
Uncontrolled terms:Fourier - Passively mode-locked lasers - Radio frequency domains - Spectral bandwidth - Spectral widths - Ultra narrows
Classification code:744.1 Lasers, General - 921.3 Mathematical Transformations
Numerical data indexing:Frequency 1.05e+08Hz, Time 4.30e-09s
DOI:10.1364/CLEO_AT.2017.FW4D.2

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<206>

Accession number:20173104012450
Title:Improved multiple circular array configuration for sparse aperture optical imaging systems
Authors:Liu, Aimin (1, 2); Gao, Limin (1); Xiao, Maosen (1)
Author affiliation:(1) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China; (2) University of Chinese Academy of Science, Beijing, China
Corresponding author:Liu, Aimin(liuaimin1232003@163.com)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:7
Issue date:July 1, 2017
Publication year:2017
Article number:073109
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:An improved multiple circular array (MCA) configuration is proposed for sparse aperture (SA) optical imaging systems. Using genetic algorithms, the practical cutoff frequency (PCOF), based on the modulation transfer function for the array, is selected as the fitness function. Moreover, the parameters, such as diameters of aperture sets, spacing between the aperture sets, and relative rotation angles between aperture sets on different concentric circles, are calculated. Improved MCA configurations, with aperture numbers of 6, 9, 12, 10, 15, 11, and 13, are given. Golay arrays, MCAs, a single annular aperture, and improved arrays with the same fill factor are compared. The results show that the improved array has highest PCOF of all the SA arrays, smoother coverage in Fourier space, and better midfrequency contrast than MCAs. Consequently, the improved array is a promising aperture configuration that can approximate a single annular aperture. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:14
Main heading:Cutoff frequency
Controlled terms:Genetic algorithms - Imaging systems - Optical image storage
Uncontrolled terms:Annular apertures - Circular arrays - Concentric circles - Fitness functions - Mid-frequency - Optical imaging system - Relative rotation - Sparse aperture
Classification code:722.1 Data Storage, Equipment and Techniques - 746 Imaging Techniques
DOI:10.1117/1.OE.56.7.073109

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<207>

Accession number:20174104243241
Title:Multi-view clustering and semi-supervised classification with adaptive neighbours
Authors:Nie, Feiping (1); Cai, Guohao (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Source title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Abbreviated source title:AAAI Conf. Artif. Intell., AAAI
Part number:1 of 1
Issue title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Issue date:2017
Publication year:2017
Pages:2408-2414
Language:English
Document type:Conference article (CA)
Conference name:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Conference date:February 4, 2017 - February 10, 2017
Conference location:San Francisco, CA, United states
Conference code:130407
Sponsor:Amazon; Artificial Intelligence; Baidu; et al.; IBM; Tencent
Publisher:AAAI press
Abstract:Due to the efficiency of learning relationships and complex structures hidden in data, graph-oriented methods have been widely investigated and achieve promising performance in multi-view learning. Generally, these learning algorithms construct informative graph for each view or fuse different views to one graph, on which the following procedure are based. However, in many real world dataset, original data always contain noise and outlying entries that result in unreliable and inaccurate graphs, which cannot be ameliorated in the previous methods. In this paper, we propose a novel multi-view learning model which performs clustering/semi-supervised classification and local structure learning simultaneously. The obtained optimal graph can be partitioned into specific clusters directly. Moreover, our model can allocate ideal weight for each view automatically without additional weight and penalty parameters. An efficient algorithm is proposed to optimize this model. Extensive experimental results on different real-world datasets show that the proposed model outperforms other state-of-the-art multi-view algorithms. Copyright 2017, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.
Number of references:26
Main heading:Learning algorithms
Controlled terms:Artificial intelligence - Supervised learning
Uncontrolled terms:Complex structure - Local structure - Multi-view clustering - Multi-view learning - Penalty parameters - Real-world datasets - Semi-supervised classification - State of the art
Classification code:723.4 Artificial Intelligence

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<208>

Accession number:20170603337865
Title:Visible and near-infrared waveguides formed by double-energy proton implantation in magneto-optical glasses
Authors:Liu, Chun-Xiao (1); Shen, Xiao-Liang (1); Zheng, Rui-Lin (1); Guo, Hai-Tao (2); Li, Wei-Nan (2); Wei, Wei (1)
Author affiliation:(1) School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing; 210023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi′an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi′an; 710119, China
Corresponding author:Liu, Chun-Xiao(cxliu0816@sina.com)
Source title:Applied Physics B: Lasers and Optics
Abbreviated source title:Appl Phys B
Volume:123
Issue:2
Issue date:February 1, 2017
Publication year:2017
Article number:56
Language:English
ISSN:09462171
CODEN:APBOEM
Document type:Journal article (JA)
Publisher:Springer Verlag
Abstract:Ion implantation is one of the most competitive methods for the fabrication of optical waveguide structures in optoelectronic materials. Tb3+-doped aluminum borosilicate glass has been demonstrated to be a type of magneto-optical glass with high Verdet constant. In this work, the proton implantation technique with energies of (500 + 550) keV and fluences of (1.0 + 2.0) × 1016ions/cm2is performed to form planar waveguides in the Tb3+-doped aluminum borosilicate glass. The guiding modes of the fabricated waveguide were measured by the prism-coupling method at wavelengths of 632.8 and 1539 nm. The near-field light intensity distribution was measured by the end-face coupling method at the wavelength of 632.8 nm and calculated by the finite-difference beam propagation method at both 632.8 and 1539 nm. The optical properties of the double-energy proton-implanted magneto-optical glass waveguides show promise for use as multi-functional integrated optical devices in the visible and near-infrared bands. 2017, Springer-Verlag Berlin Heidelberg.
Number of references:23
Main heading:Borosilicate glass
Controlled terms:Aluminum compounds - Beam propagation method - Infrared devices - Ion implantation - Optical glass - Optical properties - Optical waveguides - Optoelectronic devices
Uncontrolled terms:Finite difference beam propagation method - Glass waveguides - Integrated optical devices - Opto-electronic materials - Prism coupling method - Proton implantation technique - Visible and near infrared - Waveguide structure
Classification code:711 Electromagnetic Waves - 741 Light, Optics and Optical Devices - 812.3 Glass - 921 Mathematics
DOI:10.1007/s00340-017-6644-8

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<209>

Accession number:20172203711701
Title:Comparative Study of Data Compression Methods for Large Aperture Static Imaging Spectrometer
Authors:Yu, Lu (1, 2, 3); Liu, Xue-Bin (1); Li, Hong-Bo (1, 3); Liu, Gui-Zhong (2)
Author affiliation:(1) Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Liu, Xue-Bin(lxb@opt.ac.cn)
Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi
Volume:37
Issue:3
Issue date:March 1, 2017
Publication year:2017
Pages:939-945
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Facing the problem of choosing different data source as compressing object results in different compression effect, several techniques are investigated to explore a better data source which can reduce the loss of image and spectral information while getting higher compression ratio in the compression work of the large aperture static imaging spectrometer. In this paper the optical path difference dimension data source of LASIS was proposed after analyzing the characteristic of LASIS and then compared with the LASIS and LAMIS data source in detail. The SWIR data collected with the principle prototype of LASIS were used in our experiment. Firstly, three forms of data sources were extracted after detailedly introducing their data characteristic and extracting methods. Secondly, the mature algorithms in engineering JPEG and JPEG2000 were employed to compress and reconstruct the three forms of data sources respectively. Finally, the compression effect was evaluated in the aspect of image content, interference dimension, spectral dimension and compression ratio respectively, and the original spectral curves of three materials choosing from the field of view and those after reconstruction were extracted next, then the loss of spectral information of these three materials were measured by using the SA (Spectral Angle) and RQE (Relative Quadratic Error) values of the spectral curves to evaluate the compression effect. It is demonstrated that using the optical path difference dimension data as compressing object shows obvious advantages compared with LASIS and LAMIS, which achieves a combination of higher compression ratio, lower mean square error, lower peak signal noise ratio and less information loss that is competitive with the best results from the literature. The results show that the proposed optical path difference dimension data source has good performance in preserving the spatial and spectral information during the compression of LASIS than the other two common forms data sources of LASIS. 2017, Peking University Press. All right reserved.
Number of references:9
Main heading:Data compression ratio
Controlled terms:Aspect ratio - Compaction - Data compression - Image compression - Mean square error - Spectrometers
Uncontrolled terms:Compression effects - Data characteristics - Data-source - Higher compression ratios - LASIS - Optical path difference - Peak signal noise ratio - Spectral information
Classification code:741.3 Optical Devices and Systems - 922.2 Mathematical Statistics
DOI:10.3964/j.issn.1000-0593(2017)03-0939-07

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<210>

Accession number:20171603575285
Title:All polarization-maintaining fiber amplification system to generate high-power and high-quality femtosecond laser pulses
Authors:Wen, Liang (1); Liu, Bowen (1); Song, Huanyu (1); Hu, Minglie (1); Song, Youjian (1); Chai, Lu (1); Zhu, Zhe (2); Wang, Qingyue (1)
Author affiliation:(1) Ultrafast Laser Laboratory, School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin; 300072, China; (2) Lasfiberio Co., Ltd, Xi'an; Shaanxi; 710119, China
Corresponding author:Liu, Bowen(bwliu@tju.edu.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:44
Issue:2
Issue date:February 10, 2017
Publication year:2017
Article number:0201011
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An all polarization-maintaining fiber femtosecond laser amplification system, using Yb-doped large-mode-area double-cladding fiber (LMA-DCF) as gain medium and adopting the chirped pulse amplification technology, was constructed. Benefiting from the all polarization-maintaining fiber construction, the amplification system showed high-integration and long-term stability. Furthermore, the quality and duration of the pulses after compression were optimized by controlling the length of the stretcher fiber, which made it possible to compensate the third-order-dispersion accumulated in the system by introducing nonlinear chirp in the amplifier. Meanwhile, we analyzed the impact on amplified pulses caused by periodic spectral modulation. Through optimizing artisan craftsmanship of polarization-maintaining fiber (2+1)×1 combiner, the issue of periodic spectral modulation was solved. Finally, the high-quality ultrashort laser pulses with an average power of 9 W and a pulse duration of 260 fs at the repetition rate of 111 MHz after compression, corresponding to single pulse energy up to 81 nJ and pulse polarization ratio of 13 dB, were generated. 2017, Chinese Lasers Press. All right reserved.
Number of references:18
Page count:7
Main heading:Polarization-maintaining fiber
Controlled terms:Chirp modulation - Cladding (coating) - Femtosecond lasers - Fiber amplifiers - Fiber lasers - Fibers - Laser optics - Light polarization - Pulse repetition rate - Q switched lasers - Spectroscopy - Ultrashort pulses
Uncontrolled terms:Chirped pulse amplifications - Double cladding fiber - Femtosecond fiber lasers - Laser amplification - Long term stability - Single pulse energy - Spectral modulation - Third order dispersion
Classification code:716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 741.1.2 Fiber Optics - 744.1 Lasers, General - 744.4 Solid State Lasers
Numerical data indexing:Decibel 1.30e+01dB, Energy 8.10e-08J, Frequency 1.11e+08Hz, Power 9.00e+00W, Time 2.60e-13s
DOI:10.3788/CJL201744.0201011

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<211>

Accession number:20174204273986
Title:Projected clustering via robust orthogonal least square regression with optimal scaling
Authors:Zhang, Rui (1); Nie, Feiping (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science, Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Source title:Proceedings of the International Joint Conference on Neural Networks
Abbreviated source title:Proc Int Jt Conf Neural Networks
Volume:2017-May
Part number:1 of 1
Issue title:2017 International Joint Conference on Neural Networks, IJCNN 2017 - Proceedings
Issue date:June 30, 2017
Publication year:2017
Pages:2784-2791
Article number:7966199
Language:English
CODEN:85OFAE
ISBN-13:9781509061815
Document type:Conference article (CA)
Conference name:2017 International Joint Conference on Neural Networks, IJCNN 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:Anchorage, AK, United states
Conference code:128847
Sponsor:Brain-Mind Institute (BMI); Budapest Semester in Cognitive Science (BSCS); Intel
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The orthogonal least square regression (OLSR) serves as a pretty significant problem for the dimensionality reduction. Due to lack of the scale change in OLSR, the scaling term is at first introduced to OLSR to build up a novel orthogonal least square regression with optimal scaling (OLSR-OS) problem. However, OLSR-OS is still sensitive to the outliers, such that associated results could be fallacious. To strengthen the robustness of OLSR-OS, we propose an original robust OLSR-OS (ROLSR-OS) problem in &ell;2,1-norm. To tackle a more ill-defined situation, ROLSR-OS in &ell;2,1-norm can be further extended to ROLSR-OS in capped &ell;2-norm. Besides, the associated ROLSR-OS methods could be derived by solving the re-weighted counterparts of ROLSR-OS problems in both norms. Moreover, the equivalence between the re-weighted counterparts and the original ROLSR-OS problems is also provided along with the convergence analysis of the proposed ROLSR-OS methods. Accordingly, both the optimal scaling and weight can be achieved automatically via the proposed ROLSR-OS approaches. Specifically, the proposed ROLSR-OS methods are self-adaptive, such that the smaller weight would be automatically assigned to the term with larger outliers to enhance the robustness. Consequently, projected clustering and modified projected clustering under the proposed ROLSR-OS problems are further investigated both theoretically and experimentally. 2017 IEEE.
Number of references:21
Main heading:Regression analysis
Controlled terms:Statistics
Uncontrolled terms:Convergence analysis - Dimensionality reduction - Orthogonal least squares - Projected clustering - Self-Adaptive
Classification code:922.2 Mathematical Statistics
DOI:10.1109/IJCNN.2017.7966199

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<212>

Accession number:20180104612208
Title:A passively mode-locked nanosecond laser with an ultra-narrow spectral width
Authors:Kues, Michael (1, 2); Reimer, Christian (1); Wetzel, Benjamin (1, 3); Roztocki, Piotr (1); Little, Brent E. (4); Chu, Sai T. (5); Hansson, Tobias (1); Viktorov, Evgeny A. (6); Moss, David J. (1, 7); Morandotti, Roberto (1)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) School of Mathematical and Physical Sciences, University of Sussex, Sussex House, Falmer, Brighton; BN1 9RH, United Kingdom; (4) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (5) City University of Hong Kong, Department of Physics and Materials Science, Tat Chee Avenue, Hong Kong; (6) National Research University of Information Technologies Mechanics and Optics, St. Petersburg, Russia; (7) Center for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia
Corresponding author:Kues, Michael(michael.kues@emt.inrs.ca)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F82-CLEO_Europe 2017
Part number:1 of 1
Issue title:The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Conference date:June 25, 2017 - June 29, 2017
Conference location:Munich, Germany
Conference code:139018
Publisher:OSA - The Optical Society
Number of references:3
Page count:1

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<213>

Accession number:20180404671056
Title:A star pattern identification algorithm based on wheel code feature
Authors:Shao, Yuancheng (1, 2); Gao, Wei (1); Song, Zongxi (1); Wei, Xin (1, 2)
Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104625C
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Pyramid algorithm and grid algorithm are typical algorithms for all-sky autonomous star identification, and it has advantages of high recognition rate, and fast in running. However their recognition rate decreases rapidly when the position noise, lost stars or fake stars exist in the star image. In order to improve the performance of star sensor, a new star identification algorithm based on star pattern of wheel code is proposed. The algorithm combines the main star and its surrounding neighbor stars to form the characteristic unit, and then constructs the corresponding code feature and the wheel feature respectively. In the process of star matching, the algorithm uses the code feature of the observation star as an index to Inquire storage address of the candidate navigation star, and then calculates the similarity of wheel feature between the candidate navigation star and the observation. Simulation shows that: compared to the grid algorithm, this algorithm has higher rate of correct star recognition and better robustness. When the position error is 1 pixel and 2 lost stars exist in star image, this algorithm can reach 98.4% on identification rate, while the grid algorithm is 94.6%, and the pyramid algorithm is 83.5%; when the position error is 1 pixel and 2 fake stars exist in star image, this algorithm can reach 98.6% on identification rate, while the grid algorithm is 92.3%, and the pyramid algorithm is 87.2%. 2017 SPIE.
Number of references:17
Main heading:Stars
Controlled terms:Codes (symbols) - Pixels - Wheels
Uncontrolled terms:Identification rates - Pyramid algorithms - Recognition rates - Star identification - Star pattern identification - Star recognition - Star sensors - Star-pattern
Classification code:601.2 Machine Components - 657.2 Extraterrestrial Physics and Stellar Phenomena - 723.2 Data Processing and Image Processing
Numerical data indexing:Percentage 8.72e+01%, Percentage 9.23e+01%, Percentage 9.46e+01%, Percentage 9.84e+01%, Percentage 9.86e+01%
DOI:10.1117/12.2285784

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<214>

Accession number:20180404664652
Title:Effect of Two-color Laser Wavelength on Intense Terahertz Generation
Authors:Chen, Ze-You (1, 2); Fan, Wen-Hui (1); Chen, Xu (1, 2); Ding, Ling (1, 2); Song, Chao (1, 2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Fan, Wen-Hui(fanwh@opt.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:12
Issue date:December 2017
Publication year:2017
Article number:1214003
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:The effect of the two-color laser wavelength on intense terahertz generation was studied based on the transient photocurrent model. Theoretical calculation proves that the terahertz signal will increase with the increase of laser wavelength, and this trend will not vary with the variation of the pulse intensity, the pulse duration, the laser phase and the intensity ratio of the two-color laser. The distribution of terahertz spectrum will not change with the variation of the laser wavelength. Furthermore, the influence of laser wavelength on terahertz generation is analyzed, and the physical mechanism of this effect is explained by the free electron density and the drift current density. 2017, Science Press. All right reserved.
Number of references:19
Main heading:Terahertz waves
Controlled terms:Color - Electrons - Plasmas
Uncontrolled terms:Drift currents - Free electron - Free-electron density - Laser wavelength - Physical mechanism - Terahertz generation - Theoretical calculations - Transient photocurrents
Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 932.3 Plasma Physics
DOI:10.3788/gzxb20174612.1214003
Funding details: Number: 61675230, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: J08-029, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: YYYJ-1123-4, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:The National Natural Science Foundation (No. 61675230), the Hundreds of Talents Programs' of the Chinese Academy of Sciences (No. J08-029), and the Innovative Project of the Chinese Academy of Sciences (No. YYYJ-1123-4).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<215>

Accession number:20171903639625
Title:Design, fabrication, and optical gain performance of the gain-guided and index-antiguided Nd3+-doped phosphate glass fiber (Open Access)
Authors:Shen, Xiao (1, 2); Zhang, Liaolin (1); Ding, Jianyong (3); Wei, Wei (1)
Author affiliation:(1) College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing; 210023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (3) Nanjing Institute of Advanced Laser Technology, Nanjing, Jiangsu; 210038, China
Corresponding author:Wei, Wei(weiwei@njupt.edu.cn)
Source title:Journal of the Optical Society of America B: Optical Physics
Abbreviated source title:J Opt Soc Am B
Volume:34
Issue:5
Issue date:May 1, 2017
Publication year:2017
Pages:998-1003
Language:English
ISSN:07403224
E-ISSN:15208540
CODEN:JOBPDE
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Design, fabrication, and optical gain performance of the gain-guided and index-antiguided (GG-IAG) fiber are studied systematically in this work. The main parameters of the GG-IAG fiber, i.e., a, Δn, g, and ν, are designed by single-mode operation theories, followed by a detailed study of the fabrication of the GG-IAG fiber, including preform design and fabrication, fiber-drawing conditions, and so on. GG-IAG fibers with different core diameters (100-380 μm) are obtained and their corresponding performance is measured. In order to verify whether the parameters of the fabricated GG-IAG fiber meet the theoretical design, the laser amplifier experiments of the GG-IAG fiber and the fabricated gain-guided and index-guided (GG-IG) fiber are both demonstrated. The experimental results show that the net optical gain coefficient of the GG-IG fiber is the sum of the net optical gain coefficient and the leakage loss coefficient of the GG-IAG fiber, which indicates that the fabricated GG-IAG fiber parameters and performance are consistent with the theoretical design. This work should help further exploration of the GG-IAG fiber. 2017 Optical Society of America.
Number of references:21
Main heading:Fiber amplifiers
Controlled terms:Fibers - Optical fiber fabrication - Optical gain
Uncontrolled terms:Fiber parameters - Gain coefficients - Gain performance - Index antiguided - Laser amplifiers - Phosphate glass fibers - Single mode operation - Theoretical design
Classification code:741.1 Light/Optics - 741.1.2 Fiber Optics - 744.4 Solid State Lasers
Numerical data indexing:Size 1.00e-04m to 3.80e-04m
DOI:10.1364/JOSAB.34.000998

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<216>

Accession number:20171703607579
Title:Study on the key alignment technology of the catadioptric Optical system
Authors:Song, Chong (1); Fu, Xing (1); Fu, Xi-Hong (1); Kang, Xiao-Peng (1); Liu, Kai (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102564L
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:Optical system alignment has a great influence on the whole system accuracy. In this paper, the processing of optical system alignment was mainly studied, the processing method of optics on the primary and secondary mirrors, front correction lens group and behind correction lens group with high precision centering lathe and internal focusing telescope. Then using the height indicator complete the system alignment of the primary mirror, secondary mirror, front correction group and behind correction group. Finally, based on the zygo interferometer detect the wavefront information. Using this alignment program for catadioptric optical system, the wavefront aberration of optical system, focal length, modulation transfer function (MTF) and other technical indicators have reached the requirements. 2017 SPIE.
Number of references:7
Main heading:Aberrations
Controlled terms:Alignment - Lenses - Mirrors - Optical systems - Photonics - Processing - Wavefronts
Uncontrolled terms:Internal focusing telescopes - Modulation transfer function (MTF) - Processing method - Secondary mirror - Technical indicator - Wave aberrations - Wavefront aberrations - Zygo interferometer
Classification code:601.1 Mechanical Devices - 741.3 Optical Devices and Systems - 913.4 Manufacturing
DOI:10.1117/12.2259815

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<217>

Accession number:20171703607577
Title:An estimated method of visibility for a remote sensing system based on LabVIEW and Arduino
Authors:Chen, Xiaochuan (1, 3); Ruan, Chi (2); Zheng, Hairong (3)
Author affiliation:(1) Union Research Center for Advanced Photonics and Optical Engineering, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shanxi Normal University, Xi'an; 710119, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102564H
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:Visibility data have long needed to traffic meteorological monitoring and warning system, but visibility data have monitored with expensive special equipment. Visibility degradation in fog is due to the light scattering of fog droplets, which are transit from aerosols via activation. Considering strong correlation between PM2.5(Particulate matter with diameters less than 2.5μm) mass concentration and visibility, regression models can be useful tools for retrieving visibility data from available PM2.5data. In this study, PM2.5is measured by low cost and commercial equipment. The results of experiment indicate that relative humidity is the key factor to impact accuracy correlation between PM2.5and visibility, the strongest correlation locates in the RH (<60%). Results of the studies suggest that visibility decreases with increases of PM2.5mass concentration; however, it has been found the decrease rate tapers off gradually. In order to capture the real-time visibility data, to grasp the process of low visibility events, the design of remote monitoring system is put forward. Using the GPRS network to link to cloud as a server, proposed the Arduino as the controller, design and implements a wireless serial acquisition and control system based LabVIEW and Arduino, this system can achieve the function of real-time synchronization Web publishing. The result of the test indicates that this system has typical characteristics of friendly interface, high levels of reliability and expansibility, moreover it can retrieve visibility data from available PM2.5data that can easy to access by low-cost sensor along the highway. 2017 SPIE.
Number of references:7
Main heading:Monitoring
Controlled terms:Controllers - Light scattering - Photonics - Regression analysis - Remote control - Remote sensing - Visibility
Uncontrolled terms:Arduino - Design and implements - LabViEW - Meteorological monitoring - Remote monitoring - Remote monitoring system - Remote sensing system - Visibility degradation
Classification code:731.1 Control Systems - 732.1 Control Equipment - 741.1 Light/Optics - 741.2 Vision - 922.2 Mathematical Statistics
Numerical data indexing:Size 2.50e-06m
DOI:10.1117/12.2258723

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<218>

Accession number:20171703607572
Title:Study on the optical properties of the off-axis parabolic collimator with eccentric pupil
Authors:Gang, Li (1, 2); Xin, Gao (3); Jing, Duan (1); Henjin, Zhang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (2) University of the Chinese Academy of Sciences, Beijing; 100049, China; (3) Beijing Tracking and Communication Technology Research Institute, Beijing; 100094, China
Corresponding author:Gang, Li
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102564B
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:The off-axis parabolic collimator with eccentric pupil has the advantages of wide spectrum, simple structure, easy assembly and adjustment, high performance price ratio.So, it is widely used for parameters testing and image quality calibration of ground-based and space-based cameras. In addition to the Strehl ratio, resolution, wavefront aberration, modulation transfer function, the general evaluation criteria on the imaging quality of the optical system, the beam parallelism characterize the collimator angle resolving capability and collimation condition of the collimator with the target board, can be measured easily, quickly and operation process is simple, but the study mainly focus on how to measure it so far.In order to solve Quantitative calculation of this problem, firstly, the discussion of aberration condition of the off-axis parabolic is carried out based on the the primary aberration theory. Secondly, analysis on the influencing factor on collimator optical properties is given, including the geometrical aberrations of spherical aberration, coma, astigmatism, the relation between the position of the eccentric pupil and the aberration and optical element surface wavefront aberration, after that, according to the basis of diffraction and wavefront aberration theory, the paper deduced calculation method of the beam parallelism, at last, an example of a 400mm diameter off-axis parabolic collimator with eccentric pupil is given to caculate, the practical results shows that calculation data is well in accordance with actual measurement data and results can meet the demand and has a guiding significance to the actual project manufacture and the theory analysis. 2017 SPIE.
Number of references:26
Main heading:Aberrations
Controlled terms:Image quality - Optical collimators - Optical systems - Photonics - Quality control - Wavefronts
Uncontrolled terms:Beam parallelism - Eccentric pupil - Guiding significances - Off-axis parabolic - Primary aberration - Quantitative calculation - Spherical aberrations - Wavefront aberrations
Classification code:741.3 Optical Devices and Systems - 913.3 Quality Assurance and Control
Numerical data indexing:Size 4.00e-01m
DOI:10.1117/12.2258223

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<219>

Accession number:20171703607527
Title:Analysis and compensation of disturbance for small inertial stabilized line-of-sight system
Authors:Meng, Zhang (1, 2); Junfeng, Han (2)
Author affiliation:(1) University of Chinese, Academy of Sciences, China; (2) Xi'An Institute of Optics and Precision Mechanics CAS, GaoXin qu, XinXi road 17, Xi'An; 710129, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:1025626
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:One of the main factors that affect the performance of stabilized Line-of-Sight (LOS) control system is disturbance torque. Firstly, the transfer function between disturbance torque and angular velocity of LOS is given by establishing the system dynamics model. Secondly, we investigate the characteristics of disturbance torque for small inertial Line-of-Sight control system. Thirdly, an application of disturbance observer is presented to compensate for disturbance, such as friction and mass imbalance. In this paper, consider only friction. Simulation is made by using the friction model output as disturbance input. In the course of Matlab simulation, the compensation by using disturbance observer improves the overall stabilization performance of the system. The RMS value of the velocity error has decreased to 10%. 2017 SPIE.
Number of references:12
Main heading:Torque
Controlled terms:Control systems - Friction - MATLAB - Photonics - Tribology
Uncontrolled terms:Disturbance inputs - Disturbance observer - Disturbance torque - Friction torque - Line-of-sight control - Line-of-sight systems - Small inertia - System dynamics model
Classification code:731.1 Control Systems - 741.1 Light/Optics - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity - 931.2 Physical Properties of Gases, Liquids and Solids
Numerical data indexing:Percentage 1.00e+01%
DOI:10.1117/12.2257355

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<220>

Accession number:5236060
Title:Remote sensing scene classification by unsupervised representation learning
Authors:Lu, Xiaoqiang (1); Zheng, Xiangtao (1); Yuan, Yuan (1)
Author affiliation:(1) Center for OPTicalIMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)
Source title:IEEE Transactions on Geoscience and Remote Sensing
Abbreviated source title:IEEE Trans Geosci Remote Sens
Volume:55
Issue:9
Issue date:September 2017
Publication year:2017
Pages:5148-5157
Article number:7936433
Language:English
ISSN:01962892
CODEN:IGRSD2
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:With the rapid development of the satellite sensor technology, high spatial resolution remote sensing (HSR) data have attracted extensive attention in military and civilian applications. In order to make full use of these data, remote sensing scene classification becomes an important and necessary precedent task. In this paper, an unsupervised representation learning method is proposed to investigate deconvolution networks for remote sensing scene classification. First, a shallow weighted deconvolution network is utilized to learn a set of feature maps and filters for each image by minimizing the reconstruction error between the input image and the convolution result. The learned feature maps can capture the abundant edge and texture information of high spatial resolution images, which is definitely important for remote sensing images. After that, the spatial pyramid model (SPM) is used to aggregate features at different scales to maintain the spatial layout of HSR image scene. A discriminative representation for HSR image is obtained by combining the proposed weighted deconvolution model and SPM. Finally, the representation vector is input into a support vector machine to finish classification. We apply our method on two challenging HSR image data sets: the UCMerced data set with 21 scene categories and the Sydney data set with seven land-use categories. All the experimental results achieved by the proposed method outperform most state of the arts, which demonstrates the effectiveness of the proposed method. ? 1980-2012 IEEE.
Number of references:55
Controlled terms:data set - deconvolution - image classification - image processing - remote sensing - satellite sensor - spatial resolution - support vector machine - unsupervised classification
Geographic terms:Australia - New South Wales - Sydney [New South Wales]
Classification code:71.8.5.4 Remote sensing: numerical and image analysis
DOI:10.1109/TGRS.2017.2702596

Database:GEOBASE
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<221>

Accession number:20173103999046
Title:NIR 3D GISC lidar on a balloon-borne platform
Authors:Wang, Chenglong (1, 2); Mei, Xiaodong (1, 2); Pan, Long (1, 2); Wang, Pengwei (1, 2); Li, Wang (1); Gao, Xin (1); Xie, Meilin (3); Han, Junfeng (3); Zhang, Hui (2, 4); Bo, Zunwang (1); Chen, Mingliang (1); Gong, Wenling (1); Han, Shensheng (1)
Author affiliation:(1) Key Laboratory for Quantum Optics and Center for Cold Atom Physics of CAS, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (4) Nanjing Institute of Astronomical Optics and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing, China
Corresponding author:Gong, Wenling(gongwl@siom.ac.cn)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F44-3D 2017
Part number:1 of 1
Issue title:3D Image Acquisition and Display: Technology, Perception and Applications, 3D 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:3D Image Acquisition and Display: Technology, Perception and Applications, 3D 2017
Conference date:June 26, 2017 - June 29, 2017
Conference location:San Francisco, CA, United states
Conference code:136638
Sponsor:FISBA Innovators in Photonics; Foto Nation; Lockheed Martion; OSA
Publisher:OSA - The Optical Society
Abstract:The first NIR 3D GISC lidar on a balloon-borne platform is reported in this paper. Experimental results demonstrate that both the transverse and range resolutions of better than 0:5m at over 1km hight can be achieved by this lidar even under middle turbulence weather conditions, which suggests its great prospect in remote sensing application. 2016 OSA.
Number of references:8
Page count:3
Main heading:Three dimensional displays
Controlled terms:Balloons - Image acquisition - Infrared devices - Optical radar - Remote sensing
Uncontrolled terms:Range resolution - Remote sensing applications
Classification code:652.5 Balloons and Gliders - 716.2 Radar Systems and Equipment - 723 Computer Software, Data Handling and Applications
Numerical data indexing:Size 1.00e+03m, Size 5.00e+00m
DOI:10.1364/3D.2017.JTu5A.11

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<222>

Accession number:20174104243167
Title:Balanced clustering with least square regression
Authors:Liu, Hanyang (1); Han, Junwei (1); Nie, Feiping (2); Li, Xuelong (3)
Author affiliation:(1) School of Automation, Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Computer Science, Center for OPTIMAL, Northwestern Polytechnical University, Xi'an; 710072, China; (3) Center for OPTIMAL, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Nie, Feiping(feipingnie@gmail.com)
Source title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Abbreviated source title:AAAI Conf. Artif. Intell., AAAI
Part number:1 of 1
Issue title:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Issue date:2017
Publication year:2017
Pages:2231-2237
Language:English
Document type:Conference article (CA)
Conference name:31st AAAI Conference on Artificial Intelligence, AAAI 2017
Conference date:February 4, 2017 - February 10, 2017
Conference location:San Francisco, CA, United states
Conference code:130407
Sponsor:Amazon; Artificial Intelligence; Baidu; et al.; IBM; Tencent
Publisher:AAAI press
Abstract:Clustering is a fundamental research topic in data mining. A balanced clustering result is often required in a variety of applications. Many existing clustering algorithms have good clustering performances, yet fail in producing balanced clusters. In this paper, we propose a novel and simple method for clustering, referred to as the Balanced Clustering with Least Square regression (BCLS), to minimize the least square linear regression, with a balance constraint to regularize the clustering model. In BCLS, the linear regression is applied to estimate the class-specific hyperplanes that partition each class of data from others, thus guiding the clustering of the data points into different clusters. A balance constraint is utilized to regularize the clustering, by minimizing which can help produce balanced clusters. In addition, we apply the method of augmented Lagrange multipliers (ALM) to help optimize the objective model. The experiments on seven real-world benchmarks demonstrate that our approach not only produces good clustering performance but also guarantees a balanced clustering result.
Copyright ? 2017, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.
Number of references:30
Main heading:Clustering algorithms
Controlled terms:Artificial intelligence - Benchmarking - Data mining - Lagrange multipliers - Least squares approximations - Regression analysis
Uncontrolled terms:Augmented lagrange multipliers - Balanced clustering - Clustering model - Fundamental research - Least Square - Least square regression - Objective modeling - SIMPLE method
Classification code:723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 903.1 Information Sources and Analysis - 921.6 Numerical Methods - 922.2 Mathematical Statistics
Funding details: Number: 61473231, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61522207, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Science Foundation of China under Grant No.61473231 and Grant No.61522207.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<223>

Accession number:20171703607647
Title:Optimal design of an earth observation optical system with dual spectral and high resolution
Authors:Yan, Pei-Pei (1); Jiang, Kai (1); Liu, Kai (1); Duan, Jing (1); Shan, Qiusha (1)
Author affiliation:(1) Photoelectric Measurement and Control Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy Sciences, Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102561X
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:With the increasing demand of the high-resolution remote sensing images by military and civilians, Countries around the world are optimistic about the prospect of higher resolution remote sensing images. Moreover, design a visible/infrared integrative optic system has important value in earth observation. Because visible system can't identify camouflage and recon at night, so we should associate visible camera with infrared camera. An earth observation optical system with dual spectral and high resolution is designed. The paper mainly researches on the integrative design of visible and infrared optic system, which makes the system lighter and smaller, and achieves one satellite with two uses. The working waveband of the system covers visible, middle infrared (3-5um). Dual waveband clear imaging is achieved with dispersive RC system. The focal length of visible system is 3056mm, F/# is 10.91. And the focal length of middle infrared system is 1120mm, F/# is 4. In order to suppress the middle infrared thermal radiation and stray light, the second imaging system is achieved and the narcissus phenomenon is analyzed. The system characteristic is that the structure is simple. And the especial requirements of the Modulation Transfer Function (MTF), spot, energy concentration, and distortion etc. are all satisfied. 2017 SPIE.
Number of references:7
Main heading:Optical systems
Controlled terms:Cameras - Infrared devices - Military photography - Observatories - Photonics - Remote sensing - Stray light
Uncontrolled terms:Dual spectral - Earth observation systems - Energy concentration - High resolution - High resolution remote sensing images - Modulation transfer function (MTF) - Remote sensing images - System characteristics
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 742.1 Photography - 742.2 Photographic Equipment
Numerical data indexing:Size 1.12e+00m, Size 3.06e+00m
DOI:10.1117/12.2257219

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<224>

Accession number:20180104611882
Title:Pulsed quantum frequency combs from an actively mode-locked intra-cavity generation scheme
Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Wetzel, Benjamin (1, 3); Little, Brent E. (4); Chu, Sai T. (5); Moss, David J. (1, 6); Morandotti, Roberto (1, 7, 8)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) School of Mathematical and Physical Sciences, University of Sussex, Sussex House, Falmer, Brighton; BN1 9RH, United Kingdom; (4) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, China; (5) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (6) Center for Microphotonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (7) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Kues, Michael
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F82-CLEO_Europe 2017
Part number:1 of 1
Issue title:The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781509067367
Document type:Conference article (CA)
Conference name:The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Conference date:June 25, 2017 - June 29, 2017
Conference location:Munich, Germany
Conference code:139018
Publisher:OSA - The Optical Society
Number of references:3
Page count:1

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<225>

Accession number:20173804172835
Title:Learning bregman distance functions for structural learning to rank
Authors:Li, Xi (1, 2); Pi, Te (3); Zhang, Zhongfei (3); Zhao, Xueyi (3); Wang, Meng (4); Li, Xuelong (5); Yu, Philip S. (6)
Author affiliation:(1) College of Computer Science and Technology, Zhejiang University, Hangzhou; 310027, China; (2) Alibaba-Zhejiang University, Joint Institute of Frontier Technologies, Hangzhou, China; (3) College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou; 310027, China; (4) School of Computer and Information, Hefei University of Technology, Hefei; 230009, China; (5) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (6) Department of Computer Science, University of Illinois at Chicago, Chicago; IL; 60607, United States
Corresponding author:Li, Xi(xilizju@zju.edu.cn)
Source title:IEEE Transactions on Knowledge and Data Engineering
Abbreviated source title:IEEE Trans Knowl Data Eng
Volume:29
Issue:9
Issue date:September 1, 2017
Publication year:2017
Pages:1916-1927
Article number:7820190
Language:English
ISSN:10414347
CODEN:ITKEEH
Document type:Journal article (JA)
Publisher:IEEE Computer Society
Abstract:We study content-based learning to rank from the perspective of learning distance functions. Standardly, the two key issues of learning to rank, feature mappings and score functions, are usually modeled separately, and the learning is usually restricted to modeling a linear distance function such as the Mahalanobis distance. However, the modeling of feature mappings and score functions are mutually interacted, and the patterns underlying the data are probably complicated and nonlinear. Thus, as a general nonlinear distance family, the Bregman distance is a suitable distance function for learning to rank, due to its strong generalization ability for distance functions, and its nonlinearity for exploring the general patterns of data distributions. In this paper, we study learning to rank as a structural learning problem, and devise a Bregman distance function to build the ranking model based on structural SVM. To improve the model robustness to outliers, we develop a robust structural learning framework for the ranking model. The proposed model Robust Structural Bregman distance functions Learning to Rank (RSBLR) is a general and unified framework for learning distance functions to rank. The experiments of data ranking on real-world datasets show the superiority of this method to the state-of-the-art literature, as well as its robustness to the noisily labeled outliers. 1989-2012 IEEE.
Number of references:54
Main heading:Mapping
Controlled terms:Statistics
Uncontrolled terms:Bregman distances - Distance functions - Generalization ability - Learning to rank - Mahalanobis distances - Real-world datasets - Structural learning - structural SVM
Classification code:405.3 Surveying - 922.2 Mathematical Statistics
DOI:10.1109/TKDE.2017.2654250
Funding details: Number: 2015CB352302, Acronym: -, Sponsor: -;Number: 2012CB316400, Acronym: -, Sponsor: -;Number: U1509206, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61472353, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61672456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grants (U1509206, 61472353, and 61672456), in part by the National Basic Research Program of China under Grant 2012CB316400 and Grant 2015CB352302, in part by the Alibaba-Zhejiang University Joint Institute of Frontier Technologies. Xi Li is the corresponding author.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20171403514881
Title:A sCMOS camera and its tests for focal plane metrology and PSF centroiding experiment
Authors:Li, Haitao (1, 2, 4); Li, Baoquan (1, 2, 3); Cao, Yang (1, 2, 3); Li, Ligang (3, 4); Yang, Jianfeng (3, 5); Ge, Wei (5); Lv, Baogang (5); Tao, Jinyou (5)
Author affiliation:(1) National Space Science Center, Chinese Academy of Sciences, Beijing, China; (2) Key Laboratory of Avionics and Information Technology for Complex Aerospace Systems, Chinese Academy of Sciences, Beijing, China; (3) University of Chinese Academy of Sciences, Beijing, China; (4) Key Laboratory of Planetary Sciences, Chinese Academy of Sciences, Shanghai, China; (5) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10255
Part number:1 of 1
Issue title:Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
Issue date:2017
Publication year:2017
Article number:102551P
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510610118
Document type:Conference article (CA)
Conference name:Chinese Society for Optical Engineering Conferences, CSOE 2016
Conference date:Nov. 2016
Conference location:Jinhua, Suzhou, Chengdu, Xi'an, And Wuxi, China
Conference code:126842
Sponsor:Chinese Academy of Engineering; Chinese Society for Optical Engineering; National Natural Science Foundation of China; Science and Technology on Low-light-level Night Vision Laboratory
Publisher:SPIE
Abstract:In this paper, the feasibility of a sCMOS camera for astrometric exoplanet detection space mission was evaluated and the evaluation methods were also studied. A 2k x 2k single-chip sCMOS camera was installed on the metrology testbed for the space mission. The pixel size of the detector is 11μm, corresponding to 1.86 arcsec on the focal plane. The sCMOS camera runs with a electronic rolling shutter. We tested the performance of the camera in detail, including the gain, linearity, readout noise, dark current, pixel response non-uniformity, etc. The data acquisition performance for the pseudo-star and the interference fringes are also studied. 2017 SPIE.
Number of references:10
Main heading:Cameras
Controlled terms:Data acquisition - Focusing - Pixels
Uncontrolled terms:Acquisition performance - Evaluation methods - Exoplanet detection - Focal Plane - Interference fringe - Linearity - Photon transfer curve - SCMOS
Classification code:723.2 Data Processing and Image Processing - 742.2 Photographic Equipment
Numerical data indexing:Size 1.10e-05m
DOI:10.1117/12.2268565
Funding details: Number: PSL15-13, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: XDA04060900, Acronym: SPP, Sponsor: Sociedade Portuguesa de Pediatria;Number: -, Acronym: AAO, Sponsor: Australian Astronomical Observatory;Number: 41604152, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61627818, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Thanks to the support of the advanced research project in Chinese Strategic Pioneer Program (SPP) on Space Science(NO. XDA04060900). The work was also funded by the Key Laboratory of Planetary Sciences, Shanghai Astronomical Observatory / Purple Mountain Observatory, Chinese Academy of Sciences(NO. PSL15-13), the National Science Foundation of China(NO. 41604152, 61627818)

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20170703338991
Title:A novel PDE-based single image super-resolution reconstruction method
Authors:Zhao, Xiaodong (1, 2); Cao, Jianzhong (1, 2); Zhou, Zuofeng (1, 2); Huang, Jijiang (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, Beijing; 100049, China
Corresponding author:Zhao, Xiaodong(zxd861227@opt.ac.cn)
Source title:International Journal of Pattern Recognition and Artificial Intelligence
Abbreviated source title:Int J Pattern Recognit Artif Intell
Volume:31
Issue:6
Issue date:June 1, 2017
Publication year:2017
Article number:1754010
Language:English
ISSN:02180014
CODEN:IJPIEI
Document type:Journal article (JA)
Publisher:World Scientific Publishing Co. Pte Ltd
Abstract:For applications such as remote sensing imaging and medical imaging, high-resolution (HR) images are urgently required. Image Super-Resolution (SR) reconstruction has great application prospects in optical imaging. In this paper, we propose a novel unified Partial Differential Equation (PDE)-based method to single image SR reconstruction. Firstly, two directional diffusion terms calculated by Anisotropic Nonlinear Structure Tensor (ANLST) are constructed, combing information of all channels to prevent singular results, making full use of its directional diffusion feature. Secondly, by introducing multiple orientations estimation using high order matrix-valued tensor instead of gradient, orientations can be estimated more precisely for junctions or corners. As a unique descriptor of orientations, mixed orientation parameter (MOP) is separated into two orientations by finding roots of a second-order polynomial in the nonlinear part. Then, we synthesize a Gradient Vector Flow (GVF) shock filter to balance edge enhancement and de-noising process. Experimental results confirm the validity of the method and show that the method enhances image edges, restores corners or junctions, and suppresses noise robustness, which is competitive with the existing methods. 2017 World Scientific Publishing Company.
Number of references:38
Main heading:Image reconstruction
Controlled terms:Anisotropy - Image enhancement - Medical imaging - Nonlinear equations - Optical resolving power - Partial differential equations - Remote sensing - Tensors
Uncontrolled terms:Image super resolutions - Multiple orientations - Nonlinear structure tensor - Partial differential equations (PDE) - Remote sensing imaging - Second-order polynomial - Single-image super-resolution reconstruction - Super resolution
Classification code:741.1 Light/Optics - 746 Imaging Techniques - 921.1 Algebra - 921.2 Calculus - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.1142/S0218001417540106

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<228>

Accession number:20173504101693
Title:Survey of Spatio-Temporal Interest Point Detection Algorithms in Video (Open Access)
Authors:Li, Yanshan (1); Xia, Rongjie (1); Huang, Qinghua (2, 3, 4); Xie, Weixin (1); Li, Xuelong (5)
Author affiliation:(1) ATR National Key Laboratory of Defense Technology, Shenzhen University, Shenzhen; 518060, China; (2) College of Information Engineering, Shenzhen University, Shenzhen; 518060, China; (3) School of Electronic and Information Engineering, South China University of Technology, Guangzhou; 510641, China; (4) Center for Optical Imagery Analysis and Learning, School of Electronics and Information, Northwestern Polytechnical University, Xian; 710072, China; (5) State Key Laboratory of Transient Optics and Photonics, Center for Optical Imagery Analysis and Learning, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China
Corresponding author:Huang, Qinghua(qhhuang@scut.edu.cn)
Source title:IEEE Access
Abbreviated source title:IEEE Access
Volume:5
Issue date:2017
Publication year:2017
Pages:10323-10331
Article number:7944559
Language:English
E-ISSN:21693536
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Recently, increasing attention has been paid to the detection of spatio-temporal interest points (STIPs), which has become a key technique and research focus in the field of computer vision. Its applications include human action recognition, video surveillance, video summarization, and content-based video retrieval. Amount of work has been done by many researchers in STIP detection. This paper presents a comprehensive review on STIP detection algorithms. We first propose the detailed introductions and analysis of the existing STIP detection algorithms. STIP detection algorithms are robust in detecting interest points for video in the spatio-temporal domain. Next, we summarize the existing challenges in the STIP detection for video, such as low time efficiency, poor robustness with respect to camera movement, illumination change, perspective occlusion, and background clutter. This paper also presents the application situations of STIP and discusses the potential development trends of STIP detection. 2013 IEEE.
Number of references:55
Main heading:Security systems
Controlled terms:Image retrieval - Signal detection
Uncontrolled terms:Content-based video retrieval - Detection algorithm - Human-action recognition - Illumination changes - Local invariant features - Spatio-temporal domains - Spatio-temporal interest points - Video
Classification code:716.1 Information Theory and Signal Processing - 914.1 Accidents and Accident Prevention
DOI:10.1109/ACCESS.2017.2712789

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<229>

Accession number:20173904199634
Title:Remote sensing scene classification by unsupervised representation learning
Authors:Lu, Xiaoqiang (1); Zheng, Xiangtao (1); Yuan, Yuan (1)
Author affiliation:(1) Center for OPTicalIMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)
Source title:IEEE Transactions on Geoscience and Remote Sensing
Abbreviated source title:IEEE Trans Geosci Remote Sens
Volume:55
Issue:9
Issue date:September 2017
Publication year:2017
Pages:5148-5157
Article number:7936433
Language:English
ISSN:01962892
CODEN:IGRSD2
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:With the rapid development of the satellite sensor technology, high spatial resolution remote sensing (HSR) data have attracted extensive attention in military and civilian applications. In order to make full use of these data, remote sensing scene classification becomes an important and necessary precedent task. In this paper, an unsupervised representation learning method is proposed to investigate deconvolution networks for remote sensing scene classification. First, a shallow weighted deconvolution network is utilized to learn a set of feature maps and filters for each image by minimizing the reconstruction error between the input image and the convolution result. The learned feature maps can capture the abundant edge and texture information of high spatial resolution images, which is definitely important for remote sensing images. After that, the spatial pyramid model (SPM) is used to aggregate features at different scales to maintain the spatial layout of HSR image scene. A discriminative representation for HSR image is obtained by combining the proposed weighted deconvolution model and SPM. Finally, the representation vector is input into a support vector machine to finish classification. We apply our method on two challenging HSR image data sets: the UCMerced data set with 21 scene categories and the Sydney data set with seven land-use categories. All the experimental results achieved by the proposed method outperform most state of the arts, which demonstrates the effectiveness of the proposed method. 1980-2012 IEEE.
Number of references:55
Main heading:Remote sensing
Controlled terms:Image resolution - Land use - Military applications
Uncontrolled terms:Adaptive deconvolution - Deconvolution models - High spatial resolution - High spatial resolution images - Reconstruction error - Remote sensing images - Scene classification - unsupervised representation learning
Classification code:403 Urban and Regional Planning and Development - 404.1 Military Engineering
DOI:10.1109/TGRS.2017.2702596
Funding details: Number: LSIT201408, Acronym: -, Sponsor: -;Number: QYZDB-SSW-JSC015, Acronym: -, Sponsor: -;Number: 2013CB336500, Acronym: -, Sponsor: -;Number: luxq666666@gmail.com, Acronym: -, Sponsor: -;Number: KGZD-EW-T03, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 60632018, Acronym: -, Sponsor: -;Number: 61232010, Acronym: -, Sponsor: -;Number: 61472413, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Manuscript received March 4, 2017; accepted April 25, 2017. Date of publication May 31, 2017; date of current version August 25, 2017. This work was supported in part by the National Basic Research Program of China (Youth 973 Program) under Grant 2013CB336500, in part by the State Key Program of National Natural Science of China under Grant 60632018, in part by the State Key Program of National Natural Science of China under Grant 61232010, in part by the National Natural Science Foundation of China under Grant 61472413, in part by the Key Research Program of the Chinese Academy of Sciences under Grant KGZD-EW-T03, in part by the Open Research Fund of the Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences under Grant LSIT201408, and in part by the Young Top-notch Talent Program of Chinese Academy of Sciences under Grant QYZDB-SSW-JSC015. (Corresponding author: Xiaoqiang Lu.) The authors are with the Center for OPTicalIMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, Shaanxi, P. R. China (e-mail: luxq666666@gmail.com).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20165203189515
Title:Character and mechanism of surface micromachining for C/SiC composites by ultrashort plus laser
Authors:Wang, J. (1); Liu, Y. (1); Wang, C. (1); Li, W. (1); Yang, X. (2); Zhang, Q. (1); Cheng, L. (1); Zhang, L. (1)
Author affiliation:(1) Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, China
Corresponding author:Liu, Y.(yongshengliu@nwpu.edu.cn)
Source title:Advances in Applied Ceramics
Abbreviated source title:Adv. Appl. Ceram.
Volume:116
Issue:2
Issue date:February 17, 2017
Publication year:2017
Pages:99-107
Language:English
ISSN:17436753
E-ISSN:17436761
Document type:Journal article (JA)
Publisher:Taylor and Francis Ltd.
Abstract:A new surface micromachining way of ultrashort plus laser for C/SiC composites with high quality and efficiency was demonstrated, including picosecond and femtosecond laser. Surface morphologies, element content and bonding states of C/SiC composites were analysed in detail after machined by picosecond and femtosecond laser power respectively. For femtosecond laser machining, the amount of nanoparticles increased with increasing laser power. At 20 and 50 mW, Si–C, C–C and Si–O bonds existed in nanoparticles, while Si–C bonds disappeared at 70 mW. For picosecond laser machining, cauliflower-like particles and periodic ripple with certain depth were formed distinctly. Furthermore, thermal ablation phenomenon occurred, and only Si–O bonds existed in particles due to the oxidation of the carbon fibres and SiC matrix. The results showed that femtosecond laser with low power was more suitable to the surface machining due to better machining quality and less machining damage compared with high power picosecond laser. 2016 Institute of Materials, Minerals and Mining.
Number of references:26
Main heading:Silicon compounds
Controlled terms:Composite micromechanics - Femtosecond lasers - Nanoparticles - Picosecond lasers - Silicon carbide - Surface micromachining
Uncontrolled terms:C/SiC composites - Element contents - Femtosecond laser machining - Laser machining - Machining damage - Machining quality - Surface machining - Thermal ablation
Classification code:761 Nanotechnology - 804.2 Inorganic Compounds - 931.1 Mechanics - 933 Solid State Physics
DOI:10.1080/17436753.2016.1257101

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<231>

Accession number:20183105627013
Title:Real-time classification of forearm movements based on high density surface electromyography
Authors:Wei, Yue (1, 4); Geng, Yanjuan (1); Yu, Wenlong (1); Samuel, Oluwarotimi Williams (1, 2); Jiang, Naifu (3); Zhou, Hui (1); Guo, Xin (4); Lu, Xiaoqiang (5); Li, Guanglin (1, 2)
Author affiliation:(1) Chinese Academy of Sciences (CAS), Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institutes of Advanced Technology, Shenzhen; 518055, China; (2) Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen; 518055, China; (3) Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong; (4) Hebei University of Technology, Tianjin; 300130, China; (5) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China
Corresponding author:Geng, Yanjuan(yj.geng@siat.ac.cn)
Source title:2017 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2017
Abbreviated source title:IEEE Int. Conf. Real-Time Comput. Robot., RCAR
Volume:2017-July
Part number:1 of 1
Issue title:2017 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2017
Issue date:July 2, 2017
Publication year:2017
Pages:246-251
Language:English
ISBN-13:9781538620342
Document type:Conference article (CA)
Conference name:2017 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2017
Conference date:July 14, 2017 - July 18, 2017
Conference location:1-6-1 Nishizaki-cho, Okinawa, Japan
Conference code:135217
Sponsor:Beijing Institute of Technology; Harbin Institute of Technology; IEEE Robotics and Automation Society (RA); Inst. Electrical and Electronics Engineers (IEEE)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Partial or complete loss of the upper limb motor function has great impact on the activities of daily life (ADL) of post-stroke survivors. To improve the rehabilitation effect of fine motor function of forearms, a couple of recent studies focused on methods that try to decode the limb motion intent of patients through physical exercises. However, there exist a few studies on real-time active rehabilitation method for the classification of multiple hand movements. In the current investigate, a pattern-recognition based rehabilitation environment was set up using high-density surface electromyogram (HD-sEMG) and the real-time classification performance of 21 forearm motions was investigated with eight healthy subjects. The results showed that the average motion completion rate across all subjects was 91.17% + 2.86%, which suggests the potential of intention-initiated approach in assistive rehabilitation technique. 2017 IEEE.
Number of references:26
Main heading:Patient rehabilitation
Controlled terms:Electromyography - Pattern recognition - Robotics
Uncontrolled terms:Active rehabilitations - Activities of Daily Life - Assistive rehabilitations - Classification performance - Healthy subjects - Physical exercise - Rehabilitation effects - Stroke survivors
Classification code:461.5 Rehabilitation Engineering and Assistive Technology - 731.5 Robotics
Numerical data indexing:Percentage 2.86e+00%
DOI:10.1109/RCAR.2017.8311868
Funding details: Number: #KQCX2015033117354152, Acronym: -, Sponsor: -;Number: 61403367, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under grants (#61403367,#91420301), the Shenzhen Governmental Basic Research Grant (#JCYJ20150401145529005), and the Shenzhen High-level Oversea Talent Program (Shenzhen Peacock Plan) Grant (#KQCX2015033117354152).

Database:Compendex
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<232>

Accession number:20174904498308
Title:Transmitting volume Bragg gratings in PTR glass written with femtosecond Bessel beams
Authors:Cheng, G.H. (1); Zhang, Y.J. (1); Liu, Q. (2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) Zhejiang Wanli University, Ningbo; 315100, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10173
Part number:1 of 1
Issue title:Fourth International Symposium on Laser Interaction with Matter
Issue date:2017
Publication year:2017
Article number:1017322
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:4th International Symposium on Laser Interaction with Matter
Conference date:November 6, 2016
Conference location:Chengdu, China
Conference code:128620
Sponsor:Academy of Engineering Physics, Research Center of Laser Fusion; CAS, Changchun Institute of Optics, Fine Mechanics and Physics; et al.; Nanjing University of Science and Technology, Advanced Solid State Laser Technology Key Laboratory of the Ministry of Industry and Information Technology; National University of Defense Technology, Institute of High Energy Laser Technology; Northwest Institute of Nuclear Technology
Publisher:SPIE
Abstract:Transmitting volume Bragg gratings were fabricated in photo-thermo-refractive glass using femtosecond laser Bessel beams and thermal treatment. The phase contrast images of gratings under different writing power were investigated before and after annealing. Microstructures composed of nano-sized crystals were observed in the exposed regions. Optimized writing power (100 mW) achieved dense nano-crystals distribution. A maximum diffraction efficiency of 92.36% was achieved with 1 mm grating thickness at period of 5 μm. 2017 SPIE.
Number of references:10
Main heading:Bragg gratings
Controlled terms:Bessel functions - Diffraction efficiency - Efficiency - Glass - Laser beams - Laser tissue interaction - Plasma interactions
Uncontrolled terms:Bessel beam - Femtoseconds - Laser-matter interactions - Nano-sized crystals - Phase-contrast image - Photo-thermo-refractive glass - Volume Bragg gratings - Writing power
Classification code:741.3 Optical Devices and Systems - 744.8 Laser Beam Interactions - 812.3 Glass - 913.1 Production Engineering - 921 Mathematics - 932.3 Plasma Physics
Numerical data indexing:Percentage 9.24e+01%, Power 1.00e-01W, Size 1.00e-03m, Size 5.00e-06m
DOI:10.1117/12.2268292
Funding details: Number: No.LY14F050002, Acronym: -, Sponsor: Natural Science Foundation of Zhejiang Province;
Funding text:National Natural Science Foundation of Zhejiang (No.LY14F050002)

Database:Compendex
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<233>

Accession number:20174804477440
Title:844-fs mode-locked fiber laser by carboxyl-functionalized graphene oxide
Authors:Duan, Lina (1); Wang, Hushan (2); Bai, Jing (2); Wang, Yonggang (3); Wei, Lianglei (3); Chen, Zhendong (3); Yu, Jia (4); Wen, Jin (1); Li, Yan (1)
Author affiliation:(1) Xi'an Shiyou University, School of Science, Xi'an, China; (2) Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, China; (3) Shaanxi Normal University, School of Physics and Information Technology, Xi'an, China; (4) Xi'an Technological University, School of Photoelectrical Engineering, Xi'an, China
Corresponding author:Duan, Lina(linaduan2010@hotmail.com)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:11
Issue date:November 1, 2017
Publication year:2017
Article number:116104
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:We had proved that a kind of graphene nanomaterial "carboxyl-functionalized graphene oxide (GO-COOH)" possessed nonlinear saturable absorber (SA) property. The modulation depth of a GO-COOH water solution was measured as ~8%. Moreover, a GO-COOH-based SA device was made and applied in an erbium-doped fiber laser. In this fiber laser, Q-switching pulses and mode-locked pulses were both obtained. With an increase in the pump power, the pulse width of Q-switching pulses decreased from 9.05 to 2.49 μs. The mode-locked pulse width was 844 fs, and the corresponding spectral bandwidth was 3.64 nm. Moreover, polarization adjusting or control was not needed during the whole process of mode locking. It illustrated that the proposed fiber laser incorporating GO-COOH could endure bigger intracavity birefringence. Our results indicated that the GO-COOH nanomaterial was a promising SA for generating high-performance pulse lasers. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:32
Main heading:Mode-locked fiber lasers
Controlled terms:Fiber lasers - Fibers - Graphene - Locks (fasteners) - Nanostructured materials - Neodymium lasers - Optical pumping - Q switching - Saturable absorbers - Thin films - Ultrafast lasers
Uncontrolled terms:Carboxyl functionalized graphene oxides - Erbium doped fiber laser - Mode-locked pulse - Modulation depth - Spectral bandwidth - Switching pulse - Temporal solitons - Water solutions
Classification code:744 Lasers - 761 Nanotechnology - 804 Chemical Products Generally
Numerical data indexing:Size 3.64e-09m, Time 8.44e-13s, Time 9.05e-06s to 2.49e-06s
DOI:10.1117/1.OE.56.11.116104
Funding details: Number: GK201702005, Acronym: -, Sponsor: -;Number: 61505160, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the Central University Special Fund Basic Research and Operating Expenses GK201702005 and the National Natural Science Foundation of China 61505160.

Database:Compendex
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<234>

Accession number:20181104902420
Title:High-rate and low-jitter optical pulse generation based on an optoelectronic oscillator using a cascaded polarization modulator and phase modulator
Authors:Liu, Anni (1); Liu, Jingliang (1); Dai, Jian (1, 2); Dai, Yitang (1); Yin, Feifei (1); Li, Jianqiang (1); Zhou, Yue (1); Xu, Kun (1, 3)
Author affiliation:(1) State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing; 100876, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xian; 710119, China; (3) School of Science, Beijing University of Posts and Telecommunications, Beijing; 100876, China
Source title:ICOCN 2017 - 16th International Conference on Optical Communications and Networks
Abbreviated source title:ICOCN - Int. Conf. Optical Commun. Networks
Volume:2017-January
Part number:1 of 1
Issue title:ICOCN 2017 - 16th International Conference on Optical Communications and Networks
Issue date:November 27, 2017
Publication year:2017
Pages:1-3
Language:English
ISBN-13:9781538632734
Document type:Conference article (CA)
Conference name:16th International Conference on Optical Communications and Networks, ICOCN 2017
Conference date:August 7, 2017 - August 10, 2017
Conference location:Wuzhen, China
Conference code:133380
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:A novel optical pulse generator with high-rate and lowjitter is proposed based on the optoelectronic oscillator using a cascaded polarization modulator and phase modulator. Optical pulses with 10 GHz repetition rate and 29 ps width are demonstrated. According to the single-sideband phase noise of the generated microwave signal, 169 fs time jitter of the generated pulses in the 100 Hz to 1 MHz frequency range can be calculated. 2017 IEEE.
Number of references:6
Main heading:Light modulators
Controlled terms:Jitter - Light pulse generators - Optical communication - Optical signal processing - Optoelectronic devices - Phase modulation - Phase noise - Polarization - Pulse repetition rate
Uncontrolled terms:Frequency ranges - Microwave signals - Optical pulse generation - Opto-electronic oscillator - Phase modulator - Polarization modulators - Repetition rate - Single side bands
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 717.1 Optical Communication Systems - 741.3 Optical Devices and Systems - 744.1 Lasers, General
Numerical data indexing:Frequency 1.00e+02Hz to 1.00e+06Hz, Frequency 1.00e+10Hz, Time 1.69e-13s, Time 2.90e-11s
DOI:10.1109/ICOCN.2017.8121562

Database:Compendex
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<235>

Accession number:20183105636310
Title:Realization on image 2D-DCT sparse transform based on FPGA
Authors:Zhang, Haifeng (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, Shanxi, China
Corresponding author:Zhang, Haifeng(zhanghf99@163.com)
Source title:2016 13th International Computer Conference on Wavelet Active Media Technology and Information Processing, ICCWAMTIP 2017
Abbreviated source title:Int. Comput. Conf. Wavelet Act. Media Technol. Inf. Process., ICCWAMTIP
Volume:2018-February
Part number:1 of 1
Issue title:2016 13th International Computer Conference on Wavelet Active Media Technology and Information Processing, ICCWAMTIP 2017
Issue date:July 2, 2017
Publication year:2017
Pages:175-178
Language:English
ISBN-13:9781509061259
Document type:Conference article (CA)
Conference name:14th International Computer Conference on Wavelet Active Media Technology and Information Processing, ICCWAMTIP 2017
Conference date:December 15, 2017 - December 17, 2017
Conference location:Chengdu, Sichuan Province, China
Conference code:135072
Sponsor:China International Talent Exchange Foundation; National High Technology Research and Development Program of China; The National Natural Science Foundation of China (NSFC)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Sampling is a necessary course that the Analog physical world leads to the world of digital information. Compressed sensing (CS) theory breaks through the traditional Nyquist sampling theorem for data acquisition. The research object of CS theory is a sparse representation of signals and here 2-D image sparse transform is achieved based on discrete cosine orthogonal basis. Furthermore, there are a presentation of 2D-DCT algorithm based on row-column decomposition structure and an illustration of the optimization algorithm of 1-D DCT based on FPGA emphatically, as well as the transpose RAM method between two levels 1-D DCT. Finally the rationality of the proposed algorithm is verified by comparing image 2D-DCT transformation based on FPGA and 2D-DCT calculation result in MATLAB. 2017 IEEE.
Number of references:6
Main heading:Discrete cosine transforms
Controlled terms:Compressed sensing - Data acquisition - Field programmable gate arrays (FPGA) - Image compression
Uncontrolled terms:Calculation results - Compression sensing - DCT algorithms - Nyquist sampling theorem - Optimization algorithms - Row column decomposition - Sparse representation - Sparse transform
Classification code:716.1 Information Theory and Signal Processing - 721.2 Logic Elements - 723.2 Data Processing and Image Processing - 921.3 Mathematical Transformations
DOI:10.1109/ICCWAMTIP.2017.8301473

Database:Compendex
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<236>

Accession number:20182705409253
Title:Numerical simulation and temporal characterization of dual-pumped microring-resonator-based optical frequency combs
Authors:Hu, Xiaohong (1, 2); Wang, Weiqiang (1, 2, 3); Wang, Leiran (1, 2); Zhang, Wenfu (1, 2, 3); Wang, Yishan (1); Zhao, Wei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) China-UK Joint Research Center on Micro/Nano Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an; 710119, China
Source title:Photonics Research
Abbreviated source title:Photon. Res.
Volume:5
Issue:3
Issue date:June 1, 2017
Publication year:2017
Pages:207-211
Language:English
ISSN:23279125
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Dual-pumped microring-resonator-based optical frequency combs (OFCs) and their temporal characteristics are numerically investigated and experimentally explored. The calculation results obtained by solving the driven and damped nonlinear Schr?dinger equation indicate that an ultralow coupled pump power is required to excite the primary comb modes through a non-degenerate four-wave-mixing (FWM) process and, when the pump power is boosted, both the comb mode intensities and spectral bandwidths increase. At low pump powers, the field intensity profile exhibits a cosine variation manner with frequency equal to the separation of the two pumps, while a roll Turing pattern is formed resulting from the increased comb mode intensities and spectral bandwidths at high pump powers. Meanwhile, we found that the power difference between the two pump fields can be transferred to the newly generated comb modes, which are located on both sides of the pump modes, through a cascaded FWM process. Experimentally, the dual-pumped OFCs were realized by coupling two self-oscillating pump fields into a microring resonator. The numerically calculated comb spectrum is verified by generating an OFC with 2.0 THz mode spacing over 160 nm bandwidth. In addition, the formation of a roll Turing pattern at high pump powers is inferred from the measured autocorrelation trace of a 10 free spectral range (FSR) OFC. The experimental observations accord well with the numerical predictions. Due to their large and tunable mode spacing, robustness, and flexibility, the proposed dual-pumped OFCs could find potential applications in a wide range of fields, including arbitrary optical waveform generation, high-capacity optical communications, and signal-processing systems. 2017 Chinese Laser Press.
Number of references:25
Main heading:Four wave mixing
Controlled terms:Bandwidth - Microcavities - Natural frequencies - Nonlinear equations - Optical communication - Optical materials - Optical parametric amplifiers - Optical resonators - Parametric amplifiers - Parametric oscillators - Signal processing
Uncontrolled terms:Free spectral range - Microring resonator - Non-degenerate four wave mixing - Numerical predictions - Optical frequency combs - Parametric oscillators and amplifiers - Signal processing systems - Temporal characteristics
Classification code:713.1 Amplifiers - 713.2 Oscillators - 714 Electronic Components and Tubes - 716.1 Information Theory and Signal Processing - 717.1 Optical Communication Systems - 741.3 Optical Devices and Systems
Numerical data indexing:Frequency 2.00e+12Hz, Size 1.60e-07m
DOI:10.1364/PRJ.5.000207
Funding details: Number: 2016YFF0200702, Acronym: -, Sponsor: -;Number: XDB 24030600, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61308037, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61635013, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61690222, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) (XDB 24030600); National Key Research and Development Program of China (2016YFF0200702); National Natural Science Foundation of China (NSFC) (61690222, 61308037, 61635013); CAS-SAFEA International Partnership Program for Creative Research Teams.

Database:Compendex
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Accession number:20171703606835
Title:Learning Discriminative Binary Codes for Large-scale Cross-modal Retrieval
Authors:Xu, Xing (1); Shen, Fumin (1); Yang, Yang (1); Shen, Heng Tao (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu; 610051, China; (2) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China
Corresponding author:Shen, Fumin(fumin.shen@gmail.com)
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:5
Issue date:May 2017
Publication year:2017
Pages:2494-2507
Article number:7867785
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Hashing based methods have attracted considerable attention for efficient cross-modal retrieval on large-scale multimedia data. The core problem of cross-modal hashing is how to learn compact binary codes that construct the underlying correlations between heterogeneous features from different modalities. A majority of recent approaches aim at learning hash functions to preserve the pairwise similarities defined by given class labels. However, these methods fail to explicitly explore the discriminative property of class labels during hash function learning. In addition, they usually discard the discrete constraints imposed on the to-be-learned binary codes, and compromise to solve a relaxed problem with quantization to obtain the approximate binary solution. Therefore, the binary codes generated by these methods are suboptimal and less discriminative to different classes. To overcome these drawbacks, we propose a novel cross-modal hashing method, termed discrete cross-modal hashing (DCH), which directly learns discriminative binary codes while retaining the discrete constraints. Specifically, DCH learns modality-specific hash functions for generating unified binary codes, and these binary codes are viewed as representative features for discriminative classification with class labels. An effective discrete optimization algorithm is developed for DCH to jointly learn the modality-specific hash function and the unified binary codes. Extensive experiments on three benchmark data sets highlight the superiority of DCH under various cross-modal scenarios and show its state-of-the-art performance. 2016 IEEE.
Number of references:46
Main heading:Binary codes
Controlled terms:Benchmarking - Discriminant analysis - Hash functions - Optimization
Uncontrolled terms:Binary solutions - Cross-modal - Discrete constraints - Discrete optimization - Function learning - hashing - Heterogeneous features - State-of-the-art performance
Classification code:723.1 Computer Programming - 921.5 Optimization Techniques - 922 Statistical Methods
DOI:10.1109/TIP.2017.2676345

Database:Compendex
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Accession number:20182205249426
Title:Model in frequency-domain identification of a fast steering mirror system based on levenberg-marquardt algorithm
Authors:Peng, Chen (1); Yanbing, Liang (2)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Xi'an, China; (2) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Corresponding author:Peng, Chen(18363123192@163.com)
Source title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Abbreviated source title:Proc. - Int. Conf. Cybern., Robot. Control, CRC
Volume:2018-January
Part number:1 of 1
Issue title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Issue date:July 2, 2017
Publication year:2017
Pages:199-202
Language:English
ISBN-13:9781538606773
Document type:Conference article (CA)
Conference name:2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Conference date:July 21, 2017 - July 23, 2017
Conference location:Chengdu, Sichuan, China
Conference code:135561
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:A method for frequency-domain identification of a fast steering mirror system is provided. The method firstly uses swept sine as dynamic excitation signal to obtain the frequency characteristics of controlled object and frequency response data by dynamic signal analyzer Agilent 35670A. Then the paper uses data pre-processed to analyze magnitude-phase characteristics based on FFT (Fast Fourier Fransform). The error of FFT calculation is relative major. To obtain the frequency characteristics approaching to real system, windowing and Sample Hold is introduced to modify magnitude-phase characteristics. For non-parametric frequency characteristics curve of the system, in combination of Levenberg-Marquardt nonlinear least squares curve fitting and transfer function model based on dynamic mechanism modelling, this paper implements curve fitting for low frequency band with frequency characteristics. With this method, the frequency characteristics of complex system can be converted to accurate transfer function. Levenberg-Marquardt algorithm providing the theoretical support for parameterizing BODE diagram is an optimization strategy. The optimization strategy improves the matching degree between actual system and model system in process of modeling and it is provided for the compensation of the influence which is from the temperature shift and measurement error of components. The paper provides a theoretical foundation for building a more complex electro-optical tracking system. 2017 IEEE.
Number of references:5
Main heading:Curve fitting
Controlled terms:Bode diagrams - Cybernetics - Distillation columns - Error compensation - Fast Fourier transforms - Frequency response - Identification (control systems) - Mirrors - Robotics - Signal analysis - Transfer functions
Uncontrolled terms:Agilent - Dynamic signal analyzers - Fast steering mirror - Frequency characteristic - Frequency domains - Frequency-domain identification - Levenberg-Marquardt algorithm - Non-linear least squares
Classification code:716.1 Information Theory and Signal Processing - 731.1 Control Systems - 731.5 Robotics - 741.3 Optical Devices and Systems - 802.1 Chemical Plants and Equipment - 921 Mathematics
Numerical data indexing:Electric_Current 3.57e+04A
DOI:10.1109/CRC.2017.10

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<239>

Accession number:20181605019737
Title:Adaboost-based detection and segmentation of bioresorbable vascular scaffolds struts in IVOCT images
Authors:Lu, Yifeng (1, 2); Cao, Yihui (1, 2, 3); Jin, Qinhua (4); Chen, Yundai (4); Yin, Qinye (3); Li, Jianan (1); Zhu, Rui (1); Zhao, Wei (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) School of the Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an, China; (4) Department of Cardiology, Chinese PLA General Hospital, Beijing, China
Source title:Proceedings - International Conference on Image Processing, ICIP
Abbreviated source title:Proc. Int. Conf. Image Process. ICIP
Volume:2017-September
Part number:1 of 1
Issue title:2017 IEEE International Conference on Image Processing, ICIP 2017 - Proceedings
Issue date:July 2, 2017
Publication year:2017
Pages:4432-4436
Language:English
ISSN:15224880
ISBN-13:9781509021758
Document type:Conference article (CA)
Conference name:24th IEEE International Conference on Image Processing, ICIP 2017
Conference date:September 17, 2017 - September 20, 2017
Conference location:Beijing, China
Conference code:134723
Sponsor:The Institute of Electrical and Electronics Engineers Signal Processing Society
Publisher:IEEE Computer Society
Abstract:Bioresorbable Vascular Scaffolds (BVS) are the most promising type of stent in percutaneous coronary intervention. For accurate BVS struts apposition assessment, intravascular optical coherence tomography (IVOCT) is the state-of-the-art imaging modality. However, manual analysis for IVOCT frames is time consuming and labor intensive. In this paper, we propose an automatic method for BVS struts center and region detection based on Adaboost algorithm and Haar-like features. Then, dynamic programming algorithm is applied to segment the contour of BVS struts. Based on the segmentation results, the apposed or malapposed struts can be automatically distinguished. By comparing the manual and automatic detection and segmentation results, our method correctly detected and segmented 87.7% of 4029 BVS struts with 18.6% false positives. The average Dice's coefficient for the correctly detected struts was 0.78. In conclusion, the evaluation suggested that this method is accurate and robust for BVS struts detection and segmentation. 2017 IEEE.
Number of references:9
Main heading:Image segmentation
Controlled terms:Adaptive boosting - Dynamic programming - Feature extraction - Optical data processing - Optical tomography - Scaffolds - Struts
Uncontrolled terms:AdaBoost algorithm - Automatic Detection - Dynamic programming algorithm - Haar-like features - IVOCT - Percutaneous coronary intervention - Segmentation results - Vascular scaffolds
Classification code:405.1 Construction Equipment - 408.2 Structural Members and Shapes - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 741.3 Optical Devices and Systems - 921.5 Optimization Techniques
Numerical data indexing:Percentage 1.86e+01%, Percentage 8.77e+01%
DOI:10.1109/ICIP.2017.8297120
Funding details:
Funding text:This work is supported by the Chinese Academy of Science and technology service network plan (Grant No. KFJ-SW-STS-185).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<240>

Accession number:20170203242082
Title:Mesoporous SiO2/VO2double-layer thermochromic coating with improved visible transmittance for smart window
Authors:Zhang, Jing (1, 2, 5); Wang, Jing (1, 2, 5); Yang, Chunming (3); Jia, Hongbao (4); Cui, Xinmin (1, 2, 5); Zhao, Shichao (1, 5); Xu, Yao (2)
Author affiliation:(1) Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; 030001, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai; 201204, China; (4) School of Science, University of Science and Technology Liaoning, Anshan; 114051, China; (5) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Xu, Yao(xuyao@opt.ac.cn)
Source title:Solar Energy Materials and Solar Cells
Abbreviated source title:Sol Energ Mater Sol Cells
Volume:162
Issue date:April 1, 2017
Publication year:2017
Pages:134-141
Language:English
ISSN:09270248
CODEN:SEMCEQ
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:Thermochromic vanadium dioxide (VO2) film is a potential material for smart-window. But the high refractive index (>2) of VO2coating in visible band resulted in strong reflection and low visible transmission. If another coating with a definite low refractive index is laid on VO2film to construct a gradient index multilayer system, the total reflection could be effectively reduced. Therefore in this paper we designed a mesoporous SiO2/VO2double-layer system in which the mesoporous SiO2layer possessed an index adjustable from 1.243 to 1.354 to reduce the surface reflection of VO2-based smart window. The mesoporous structure has been investigated through several techniques including 2D GISAXS, TEM and N2ad/desorption. More important, a facile, safe and low-cost solution method was employed to prepare VO2film with 60 nm thickness directly from ammonium citrato-oxovanadate (Ⅳ) compound that was reported by us previously. On this newly designed mesoporous SiO2/VO2double-layer coating, the integral visible transmittance at 25 °C (Tvis,L) increased to 80.0% from 69.8% of pure VO2coating while the corresponsive integral visible transmittance at 90 °C (Tvis,H) increased to 78.9% from 67.6% of pure VO2coating, if the index of mesoporous SiO2layer was optimized to 1.299. Simultaneously, the near infrared switching ability at 2000 nm (?T2000) reached 29.0% and solar energy modulation (?Tsol) was maintained at 10.2%. The phase transition temperatures (Tt) for VO2coating and the optimized SiO2/VO2double-layer coating were 51.9 °C and 53.8 °C respectively, far below 68 °C of bulky VO2. This optical performance should be very attractive for application in the further smart window because of little increased cost and greatly enhanced property. 2017 Elsevier B.V.
Number of references:42
Main heading:Vanadium dioxide
Controlled terms:Coatings - Infrared devices - Mesoporous materials - Refractive index - Silica - Solar energy
Uncontrolled terms:Double layers - High refractive index - Mesoporous - Mesoporous structures - Smart windows - Thermo-chromic - Thermochromic coatings - Visible transmittance
Classification code:657.1 Solar Energy and Phenomena - 741.1 Light/Optics - 813.2 Coating Materials
Numerical data indexing:Percentage 1.02e+01%, Percentage 2.90e+01%, Percentage 6.76e+01%, Percentage 6.98e+01%, Percentage 7.89e+01%, Percentage 8.00e+01%
DOI:10.1016/j.solmat.2016.12.048

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20182705409250
Title:Coherent optical adaptive technique improves the spatial resolution of STED microscopy in thick samples
Authors:Yan, Wei (1, 2); Yang, Yanlong (3); Tan, Yu (2); Chen, Xun (2); Li, Yang (2); Qu, Junle (1); Ye, Tong (2, 4)
Author affiliation:(1) Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China; (2) Department of Bioengineering and the COMSET, Clemson University, Clemson; SC; 29634, United States; (3) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an; 710119, China; (4) Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston; SC; 29425, United States
Source title:Photonics Research
Abbreviated source title:Photon. Res.
Volume:5
Issue:3
Issue date:June 1, 2017
Publication year:2017
Pages:176-181
Language:English
ISSN:23279125
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Stimulated emission depletion (STED) microscopy is one of far-field optical microscopy techniques that can provide sub-diffraction spatial resolution. The spatial resolution of the STED microscopy is determined by the specially engineered beam profile of the depletion beam and its power. However, the beam profile of the depletion beam may be distorted due to aberrations of optical systems and inhomogeneity of a specimen’s optical properties, resulting in a compromised spatial resolution. The situation gets deteriorated when thick samples are imaged. In the worst case, the severe distortion of the depletion beam profile may cause complete loss of the super-resolution effect no matter how much depletion power is applied to specimens. Previously several adaptive optics approaches have been explored to compensate aberrations of systems and specimens. However, it is difficult to correct the complicated high-order optical aberrations of specimens. In this report, we demonstrate that the complicated distorted wavefront from a thick phantom sample can be measured by using the coherent optical adaptive technique. The full correction can effectively maintain and improve spatial resolution in imaging thick samples. 2017 Chinese Laser Press.
Number of references:23
Main heading:Adaptive optics
Controlled terms:Aberrations - Confocal microscopy - Fluorescence microscopy - Image resolution - Optical microscopy - Stimulated emission
Uncontrolled terms:Adaptive imaging - Adaptive technique - Distorted wavefront - Far-field optical microscopy - Scanning microscopy - Spatial resolution - STED microscopies - Stimulated emission depletion microscopy
Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 931.4 Quantum Theory; Quantum Mechanics
DOI:10.1364/PRJ.5.000176
Funding details: Number: 2015KGJHZ002, Acronym: -, Sponsor: Provincial Foundation for Excellent Young Talents of Colleges and Universities of Anhui Province;Number: 1539034, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 2015CB352005, Acronym: -, Sponsor: National Basic Research Program of China (973 Program);Number: 2014A030312008, Acronym: -, Sponsor: Natural Science Foundation of Guangdong Province;Number: 61505121, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: 2014M55226, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: JCYJ20150930104948169, Acronym: -, Sponsor: Shenzhen Fundamental Research and Discipline Layout project;Number: -, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: P20GM103499, Acronym: -, Sponsor: National Institute of General Medical Sciences;
Funding text:National Basic Research Program of China (2015CB352005); National Natural Science Foundation of China (NSFC) (61378091, 61404123, 61505118, 61505121, 61525503); China Postdoctoral Science Foundation (2014M55226); Natural Science Foundation of Guangdong Province (2014A030312008); Hong Kong, Macao and Taiwan cooperation innovation platform & major projects of international cooperation in Colleges and Universities in Guangdong Province (2015KGJHZ002); National Institute of General Medical Sciences (NIGMS) (P20GM103499, R21GM104683); National Science Foundation (NSF) (1539034); Shenzhen Basic Research Project (JCYJ20150930104948169, GJHZ20160226202139185, JCYJ20160328144746940).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20173604133858
Title:Fast polarimetric dehazing method for visibility enhancement in HSI colour space
Authors:Zhang, Wenfei (1, 2, 3); Liang, Jian (1, 3); Ren, Liyong (1); Ju, Haijuan (1, 3); Bai, Zhaofeng (1); Wu, Zhaoxin (2)
Author affiliation:(1) Research Department of Information Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Department of Electronics Science and Technology, School of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Journal of Optics (United Kingdom)
Abbreviated source title:J. Opt.
Volume:19
Issue:9
Issue date:August 22, 2017
Publication year:2017
Article number:095606
Language:English
ISSN:20408978
E-ISSN:20408986
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:Image haze removal has attracted much attention in optics and computer vision fields in recent years due to its wide applications. In particular, the fast and real-time dehazing methods are of significance. In this paper, we propose a fast dehazing method in hue, saturation and intensity colour space based on the polarimetric imaging technique. We implement the polarimetric dehazing method in the intensity channel, and the colour distortion of the image is corrected using the white patch retinex method. This method not only reserves the detailed information restoration capacity, but also improves the efficiency of the polarimetric dehazing method. Comparison studies with state of the art methods demonstrate that the proposed method obtains equal or better quality results and moreover the implementation is much faster. The proposed method is promising in real-time image haze removal and video haze removal applications. 2017 IOP Publishing Ltd.
Number of references:27
Main heading:Demulsification
Controlled terms:Color - Polarimeters
Uncontrolled terms:Colour spaces - Comparison study - Haze removal - Polarimetric imaging - Real time - Real time images - Retinex method - State-of-the-art methods
Classification code:741.1 Light/Optics - 802.3 Chemical Operations - 941.3 Optical Instruments
DOI:10.1088/2040-8986/aa7f39
Funding details: Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under grant 61505246, 61275149 and 61535015.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<243>

Accession number:20170903385458
Title:Self-weighted spectral clustering with parameter-free constraint
Authors:Zhang, Rui (1); Nie, Feiping (1); Li, Xuelong (2)
Author affiliation:(1) School of computer science and Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an; Shaanxi; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China
Corresponding author:Nie, Feiping(feipingnie@gmail.com)
Source title:Neurocomputing
Abbreviated source title:Neurocomputing
Volume:241
Issue date:June 7, 2017
Publication year:2017
Pages:164-170
Language:English
ISSN:09252312
E-ISSN:18728286
CODEN:NRCGEO
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:The constrained spectral clustering (or known as the semi-supervised spectral clustering) focuses on enhancing the clustering capability by utilizing the side information. In this paper, a novel constrained spectral clustering method is proposed based on deriving a sparse parameter-free similarity. Different from other works, the proposed method transforms the given pairwise constraints into the intrinsic graph similarity and the penalty graph similarity respectively instead of incorporating them into one single similarity. Besides, the optimal weight can be automatically achieved to balance the graph optimization problems between the intrinsic graph and the penalty graph. Equipped with a general framework of efficiently unraveling the bi-objective optimization, the proposed method could obtain both ratio cut and normalized cut clusterings via updating the weighted Laplacian matrix until convergence. Moreover, the proposed method is equivalent to the spectral clustering, when no side information is provided. Consequently, the effectiveness and the superiority of the proposed method are further verified both analytically and empirically. 2017 Elsevier B.V.
Number of references:24
Main heading:Clustering algorithms
Controlled terms:Constrained optimization - Matrix algebra
Uncontrolled terms:Bi-objective optimization - Constrained spectral clustering - Graph optimization problems - Pairwise constraints - Parameter-free similarity - Side information - Spectral clustering - Weighted laplacian
Classification code:903.1 Information Sources and Analysis - 921.1 Algebra - 961 Systems Science
DOI:10.1016/j.neucom.2017.01.085

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<244>

Accession number:20164102887380
Title:Synthesis and spectroscopy of high concentration dysprosium doped GeS2[sbnd]Ga2S3[sbnd]CdI2chalcohalide glasses and fiber fabrication
Authors:Wang, Zixuan (1); Guo, Haitao (2); Xiao, Xusheng (2); Xu, Yantao (2); Cui, Xiaoxia (2); Lu, Min (2); Peng, Bo (2); Yang, Anping (3); Yang, Zhiyong (3); Gu, Shaoxuan (1)
Author affiliation:(1) State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology), Wuhan; Hubei; 430070, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an; Shaanxi; 710119, China; (3) Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou; Jiangsu; 221116, China
Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)
Source title:Journal of Alloys and Compounds
Abbreviated source title:J Alloys Compd
Volume:692
Issue date:2017
Publication year:2017
Pages:1010-1017
Language:English
ISSN:09258388
CODEN:JALCEU
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:0.2%–3% weight of Dy3+ions doped 64GeS2·16Ga2S3·20CdI2glasses were synthesized, and their spectroscopic properties were investigated. It was shown that the host glass could dissolve as much as 3% Dy3+ions without deteriorating the glass transparency. The mid-infrared (MIR) emissions of the glasses did not present remarkable concentration quenching when the Dy3+ions concentration was less than 0.6%. It was also shown that the MIR emission properties could be significantly improved by reducing S[sbnd]H/O[sbnd]H impurities in the glasses. The spectral analyses indicated that the 2.9 and 4.3 μm emissions of Dy3+ions in the glass showed relatively large stimulated emission cross sections. The glass doped with as high as 0.4% Dy3+ions was successfully drawn into fibers, indicating good potential of the doped glass for MIR lasers. 2016 Elsevier B.V.
Number of references:33
Main heading:Glass
Controlled terms:Dysprosium - Germanium compounds - Metal ions - Rare earths - Spectroscopy - Spectrum analysis
Uncontrolled terms:Chalcohalide glass - Concentration quenching - Emission properties - Fiber drawing - Judd-Ofelt - Rare earth ions - Spectroscopic property - Stimulated emission cross section
Classification code:531.1 Metallurgy - 547.2 Rare Earth Metals - 804.2 Inorganic Compounds - 812.3 Glass
Numerical data indexing:Percentage 6.00e-01%
DOI:10.1016/j.jallcom.2016.09.085
Funding details: Number: SYSJJ2016-04, Acronym: WUT, Sponsor: Wuhan University of Technology;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: KLALMD-2015-08, Acronym: JSNU, Sponsor: Jiangsu Normal University;Number: 2015JQ5141, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 51172169, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61177084, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475189, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61405080, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was financially supported by the West Light Foundation from Chinese Academy of Sciences (CAS) of China, the National Natural Science Foundation of China ( 61177084 , 61475189 , 61405080 and 51172169 ) and the Natural Science Basic Research Project in Shaanxi Province ( 2015JQ5141 ). The work was also funded by the State Key Laboratory of Silicate Materials for Architectures ( Wuhan University of Technology ) ( SYSJJ2016-04 ) and Jiangsu Key Laboratory of Advanced Laser Materials and Devices ( Jiangsu Normal University ) ( KLALMD-2015-08 ).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20172703897900
Title:Magneto-optical effects of Ge-Ga-Sb(In)-S chalcogenide glasses with diamagnetic responses
Authors:Chen, Gang (1, 2); Xu, Yantao (1, 3); Guo, Haitao (1); Cui, Xiaoxia (1); Wang, Pengfei (1); Lu, Min (1); Xiao, Xusheng (1, 3); Guo, Quan (1, 3); Peng, Bo (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; Shaanxi, China; (2) College of Material Science and Engineering, Changchun University of Science and Technology, Changchun, China; (3) University of Chinese Academy of Sciences (UCAS), Beijing, China
Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)
Source title:Journal of the American Ceramic Society
Abbreviated source title:J Am Ceram Soc
Volume:100
Issue:7
Issue date:July 1, 2017
Publication year:2017
Pages:2914-2920
Language:English
ISSN:00027820
E-ISSN:15512916
CODEN:JACTAW
Document type:Journal article (JA)
Publisher:Blackwell Publishing Inc.
Abstract:The Faraday effects of Ge-Ga-Sb(In)-S serial chalcogenide glasses were investigated at the wavelengths of 635, 808, 980, and 1319 nm, respectively. The compositional dependences were analyzed and associated influencing factors including the absorption edge, the concentration of Sb3+/In3+ions, and the wavelength dispersion of refraction index were discussed. 80GeS2·20Sb2S3composition glass was found to have the largest Verdet constant (V=0.253, 0.219, 0.149, and 0.065 min·G?1·cm?1for wavelengths 635, 808, 980, and 1319 nm, respectively) in these glasses, which is larger than that of commercial diamagnetic glasses (Schott, SF 6, V=0.069 min·G?1·cm?1@633 nm, for example). Sb3+ions with high polarizability possessing s2-sp electron jumps involving1S0→1P1,3P0,1,2transitions are responsible for large Verdet constant, and Becquerel rule is proved to be an effective guidance for estimating the Verdet constant and further optimizing the compositions in chalcogenide glasses. 2017 The American Ceramic Society
Number of references:30
Main heading:Glass
Controlled terms:Chalcogenides - Faraday effect - Refractive index
Uncontrolled terms:Absorption edges - Chalcogenide glass - Compositional dependence - Diamagnetic response - Optical materials/properties - Polarizabilities - Refraction index - Wavelength dispersion
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 741.1 Light/Optics - 804.2 Inorganic Compounds - 812.3 Glass
Numerical data indexing:Size 1.32e-06m
DOI:10.1111/jace.14808
Funding details: Number: 2014JQ8345, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 2015JQ5141, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61405240, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 61475189, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 61405241, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: -, Acronym: CACMS, Sponsor: China Academy of Chinese Medical Sciences;
Funding text:This work was financially supported by the National Nature Science Foundation of China (Grant Nos. 61405241, 61475189, and 61405240) and the West Light Foundation from Chinese Academy of Science of China (CAS) and Natural Science Basic Research Project in Shaanxi Province (Grant Nos. 2014JQ8345 and 2015JQ5141).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20172803903575
Title:Key Fabrication Technology of Polymer Photonic Crystal Fiber for Terahertz Transmission
Authors:Chen, Qi (1, 2); Kong, De-Peng (3); Miao, Jing (3); He, Xiao-Yang (1, 2); Zhang, Jian (1, 2); Wang, Li-Li (3)
Author affiliation:(1) Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang; Sichuan; 621999, China; (2) Microsystem & Terahertz Research Center, China Academy of Engineering Physics, Mianyang; Sichuan; 621999, China; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Kong, De-Peng(kongdp@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:4
Issue date:April 1, 2017
Publication year:2017
Article number:0406001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:The technologies of fabricating polymer photonics crystal fiber to suit the application needs of terahertz transmission were studied, which were related to material selecting, fiber preform fabrication and fiber drawing. According to the analyzation of optical polymers' properties and the experimental verification, ZEONEX has low absorption of less than 3 cm-1in Terahertz waves, low water absorption of less than 0.01%, high glass transition tempreture and decomposition temperature of 136℃ and 420℃ respectively. As for fiber preform fabrication and drawing, the model system was improved based on injection moulding, and drawing technology of Pascal level pressure auto-control was initially invented. The controlled value oscillations is no more than 1.5 Pa in the range of 10~200 Pa. Therefore the preform quality and reliability are promoted and fiber microstructure is effectively controlled. With the proposed technology it is hopeful of producing high air filling factor polymer photonics crystal fiber. 2017, Science Press. All right reserved.
Number of references:20
Main heading:Optical fiber fabrication
Controlled terms:Crystal whiskers - Glass transition - Injection molding - Optical fibers - Photonic crystal fibers - Plastic optical fibers - Polymers - Preforming - Quality control - Single mode fibers - Terahertz waves - Water absorption
Uncontrolled terms:Air filling factors - Decomposition temperature - Experimental verification - Fabrication Technologies - Fiber microstructures - Polymer photonic crystals - Preform fabrication - Terahertz transmission
Classification code:711 Electromagnetic Waves - 741.1.2 Fiber Optics - 802.3 Chemical Operations - 815.1 Polymeric Materials - 913.3 Quality Assurance and Control - 933.1.1 Crystal Lattice
Numerical data indexing:Percentage 1.00e-02%, Pressure 1.00e+01Pa to 2.00e+02Pa, Pressure 1.50e+00Pa
DOI:10.3788/gzxb20174604.0406001
Funding details: Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61275106, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11504416, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: CAEPTHZ201307, Acronym: -, Sponsor: China Academy of Engineering Physics THz Science and Technology Foundation;
Funding text:The National Natural Science Foundation of China (Nos. 11504416, 61275106), the CAEP THz Science and Technology Foundation (No. CAEPTHZ201307), CAS "Light of West China" Program.

Database:Compendex
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Accession number:20172903943120
Title:Deconvolution of spectral power distribution of high-power laser diode arrays (Open Access)
Authors:Zhang, Pu (1); Kim, Dae-Suk (2); Han, Bongtae (2)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) Mechanical Engineering Department, University of Maryland, College Park; MD; 20742, United States
Corresponding author:Han, Bongtae(bthan@umd.edu)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:56
Issue:20
Issue date:July 10, 2017
Publication year:2017
Pages:5590-5598
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A novel method is proposed to predict the spectral power distributions (SPDs) of individual emitters in a highpower laser diode (LD) array. The proposed method deconvolutes the SPD of an LD array by taking into account the thermal cross-talk effect as well as the current competition effect. A complete analytical expression to deconvolute the SPD of an LD array is described. The expression contains four key parameters that are to be measured experimentally: (1) the normalized SPD of the central emitter, (2) the temperature coefficient of wavelength, (3) the current competition constant, and (4) the maximum power of the center emitter. The method is implemented with a commercial water-cooled high-power LD array. The SPD of the LD array predicted from the SPDs of individual emitters are compared with the experimentally measured SPD of the LD array. The results show excellent agreement in both shape and magnitude, which corroborates the validity of the proposed method. 2017 Optical Society of America.
Number of references:28
Main heading:High power lasers
Controlled terms:Molecular physics - Optics
Uncontrolled terms:Analytical expressions - Commercial waters - Competition effects - High power - High power laser diode arrays - Maximum power - Spectral power distribution - Temperature coefficient
Classification code:741.1 Light/Optics - 744.1 Lasers, General - 931.3 Atomic and Molecular Physics
DOI:10.1364/AO.56.005590
Funding details: Number: -, Acronym: UMD, Sponsor: University of Maryland;Number: -, Acronym: CSC, Sponsor: China Scholarship Council;Number: 201504910345, Acronym: CSC, Sponsor: China Scholarship Council;Number: FA8650-15-1-7526, Acronym: DARPA, Sponsor: Defense Advanced Research Projects Agency;Number: -, Acronym: DARPA, Sponsor: Defense Advanced Research Projects Agency;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61404172, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61334010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Sponsorship by the DARPA is greatly appreciated and graciously acknowledged. The technical contribution of the first author was made during his stay at the University of Maryland as a visiting scholar. Financial support for his stay by the CSC and the NSFC is also appreciated and graciously acknowledged. Defense Advanced Research Projects Agency (DARPA) (FA8650-15-1-7526); China Scholarship Council (CSC) (201504910345); National Natural Science Foundation of China (NSFC) (61334010, 61404172).

Database:Compendex
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Accession number:20172903954496
Title:Anchor-based group detection in crowd scenes
Authors:Chen, Mulin (1); Wang, Qi (1); Li, Xuelong (2)
Author affiliation:(1) School of Computer Science and Center, OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an, Shaanxi; 710072, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi; 710119, China
Corresponding author:Wang, Qi
Source title:ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Abbreviated source title:ICASSP IEEE Int Conf Acoust Speech Signal Process Proc
Part number:1 of 1
Issue title:2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017 - Proceedings
Issue date:June 16, 2017
Publication year:2017
Pages:1378-1382
Article number:7952382
Language:English
ISSN:15206149
CODEN:IPRODJ
ISBN-13:9781509041176
Document type:Conference article (CA)
Conference name:2017 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2017
Conference date:March 5, 2017 - March 9, 2017
Conference location:New Orleans, LA, United states
Conference code:128382
Sponsor:The Institute of Electrical and Electronics Engineers Signal Processing Society
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Group detection aims to classify pedestrians into categories according to their motion dynamics. It's fundamental for analyzing crowd behaviors and involves a wide range of applications. In this paper, we propose a Anchor-based Manifold Ranking (AMR) method to detect groups in crowd scenes. Our main contributions are threefold: (1) the topological relationship of individuals are effectively investigated with a manifold ranking method; (2) global consistency in crowds are accurately recognized by a coherent merging strategy; (3) the number of groups is decided automatically based on the similarity graph of individuals. Experimental results show that the proposed framework is competitive against the state-of-the-art methods. ? 2017 IEEE.
Number of references:23
DOI:10.1109/ICASSP.2017.7952382
Funding details: Number: 2015JM6264, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61379094, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by the National Natural Science Foundation of China under Grant 61379094 and Natural Science Foundation Research Project of Shaanxi Province under Grant 2015JM6264.

Database:Compendex
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<249>

Accession number:20170403269492
Title:In situ measurement of the topological charge of a perfect vortex using the phase shift method
Authors:Ma, Haixiang (1); Li, Xinzhong (1, 2); Tai, Yuping (3); Li, Hehe (1); Wang, Jingge (1); Tang, Miaomiao (1); Wang, Yishan (2); Tang, Jie (2); Nie, Zhaogang (4)
Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471003, China; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang; 471003, China; (4) School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou; 510006, China
Corresponding author:Li, Xinzhong(xzli@haust.edu.cn)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:42
Issue:1
Issue date:January 1, 2017
Publication year:2017
Pages:135-138
Language:English
ISSN:01469592
E-ISSN:15394794
CODEN:OPLEDP
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:We propose a method to determine the topological charge (TC) of a perfect vortex. With the phase shift technique, the perfect vortex and its conjugate beam exactly overlap and interfere. Consequently, the TC of a perfect vortex is determined by counting the number of interference fringes. This proposed method enables in situ determination of the TC of the perfect vortex without the need for additional optical elements, and it is immune to environmental vibration and parasitic interference. 2016 Optical Society of America.
Number of references:46
Main heading:Vortex flow
Controlled terms:Topology
Uncontrolled terms:Additional optical elements - Conjugate beams - Environmental vibrations - In-situ measurement - Interference fringe - Phase shift techniques - Phase-shift method - Topological charges
Classification code:631.1 Fluid Flow, General - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1364/OL.42.000135
Funding details: Number: 2011YQ030113, Acronym: -, Sponsor: -;Number: SKLST201203, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61205086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11504091, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (11504091, 61205086); Open Research Fund of State Key Laboratory of Transient Optics and Photonics; Chinese Academy of Sciences (CAS) (SKLST201203); National Major Scientific Instruments and Equipment Development Special Funds (2011YQ030113).

Database:Compendex
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<250>

Accession number:20171103434545
Title:In-situ growth amorphous carbon nanotube on silicon particles as lithium-ion battery anode materials
Authors:Zhao, Tingkai (1); She, Shengfei (1, 2); Ji, Xianglin (1); Jin, Wenbo (1); Dang, Alei (1); Li, Hao (1); Li, Tiehu (1); Shang, Songmin (3); Zhou, Zhongfu (4)
Author affiliation:(1) State Key Laboratory of Solidification Processing, Shaanxi Engineering Laboratory for Graphene New Carbon Materials and Applications, Northwestern Polytechnical University, Xi'an; 710072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics CAS, Xi'an; 710119, China; (3) Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong; (4) Department of Physics, Aberystwyth University, Aberystwyth; SY23 3FL, United Kingdom
Corresponding author:Zhao, Tingkai(ztk-xjtu@163.com)
Source title:Journal of Alloys and Compounds
Abbreviated source title:J Alloys Compd
Volume:708
Issue date:2017
Publication year:2017
Pages:500-507
Language:English
ISSN:09258388
CODEN:JALCEU
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:A novel silicon core/amorphous carbon nanotube (ACNT) shell composite that can be used as lithium-ion batteries anode material was in-situ synthesized in the chemical vapor deposition (CVD) growth process. The hypothesized core/shell structure was evidenced by SEM/TEM/XRD, suggesting that the ACNTs composed of carbon clusters with short-range order and long-range disorder were successfully deposited onto the surface of the silicon particles. This Si/ACNT composite delivered a high capacity of 1496 mAh g?1at a current density of 100 mA g?1, and a superior cycling stability with 80% capacity retention after 300 cycles. This observed specific capacity improvement of Si/ACNT composite is likely attributed to the formed three-dimensional conductive networks between silicon particles and interwoven ACNTs in the composite. 2017 Elsevier B.V.
Number of references:35
Main heading:Amorphous silicon
Controlled terms:Amorphous carbon - Anodes - Carbon nanotubes - Chemical vapor deposition - Electrochemical properties - Electron microscopy - Lithium-ion batteries - Silicon - X ray diffraction - Yarn
Uncontrolled terms:Chemical vapor depositions (CVD) - Conductive networks - Core/shell structure - In-situ synthesized - Lithium-ion battery anodes - Short range ordering - Silicon cores - Specific capacities
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.1 Electron Tubes - 761 Nanotechnology - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 819.4 Fiber Products - 933.2 Amorphous Solids
Numerical data indexing:Percentage 8.00e+01%
DOI:10.1016/j.jallcom.2017.03.019
Funding details: Number: 2014ZF53074, Acronym: -, Sponsor: Aeronautical Science Foundation of China;Number: Z20160011, Acronym: NPU, Sponsor: Northwestern Polytechnical University;Number: 2016JQ5108, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 51672221, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 51572221, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the Natural Science Foundation of China (51572221, 51672221), the China Aeronautical Science Fund (2014ZF53074), the Natural Science Foundation of Shaanxi Province (2016JQ5108) and the Graduate Innovation Seed Fund of Northwestern Polytechnical University (Z20160011).

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Accession number:20170903403356
Title:Emotional textile image classification based on cross-domain convolutional sparse autoencoders with feature selection
Authors:Li, Zuhe (1, 2); Fan, Yangyu (1); Liu, Weihua (3); Yu, Zeqi (2); Wang, Fengqin (2)
Author affiliation:(1) Northwestern Polytechnical University, School of Electronics and Information, Xi'an, China; (2) Zhengzhou University of Light Industry, School of Computer and Communication Engineering, Zhengzhou, China; (3) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China
Corresponding author:Li, Zuhe(zuheli@126.com)
Source title:Journal of Electronic Imaging
Abbreviated source title:J. Electron. Imaging
Volume:26
Issue:1
Issue date:January 1, 2017
Publication year:2017
Article number:013022
Language:English
ISSN:10179909
E-ISSN:1560229X
CODEN:JEIME5
Document type:Journal article (JA)
Publisher:SPIE
Abstract:We aim to apply sparse autoencoder-based unsupervised feature learning to emotional semantic analysis for textile images. To tackle the problem of limited training data, we present a cross-domain feature learning scheme for emotional textile image classification using convolutional autoencoders. We further propose a correlation-analysis-based feature selection method for the weights learned by sparse autoencoders to reduce the number of features extracted from large size images. First, we randomly collect image patches on an unlabeled image dataset in the source domain and learn local features with a sparse autoencoder. We then conduct feature selection according to the correlation between different weight vectors corresponding to the autoencoder's hidden units. We finally adopt a convolutional neural network including a pooling layer to obtain global feature activations of textile images in the target domain and send these global feature vectors into logistic regression models for emotional image classification. The cross-domain unsupervised feature learning method achieves 65% to 78% average accuracy in the cross-validation experiments corresponding to eight emotional categories and performs better than conventional methods. Feature selection can reduce the computational cost of global feature extraction by about 50% while improving classification performance. 2017 SPIE and IS&T.
Number of references:41
Main heading:Classification (of information)
Controlled terms:Convolution - Feature extraction - Image analysis - Image classification - Learning systems - Neural networks - Regression analysis - Semantics - Textiles
Uncontrolled terms:Auto encoders - Classification performance - Convolutional neural network - Domain adaptation - Feature selection methods - Logistic regression models - Textile images - Unsupervised feature learning
Classification code:716.1 Information Theory and Signal Processing - 819 Synthetic and Natural Fibers; Textile Technology - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 5.00e+01%, Percentage 6.50e+01% to 7.80e+01%
DOI:10.1117/1.JEI.26.1.013022
Funding details: Number: 2013SZS15-K02, Acronym: -, Sponsor: -;Number: 61501391, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61601411, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 15A510035, Acronym: -, Sponsor: Natural Science Foundation of Henan Province;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant 61601411 and 61501391, the Science and Technology Innovation Engineering Program for Shaanxi Provincial Key Laboratories under Grant 2013SZS15-K02, and the Key Science Foundation of Henan province under Grant 15A510035.

Database:Compendex
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Accession number:20172903958195
Title:Room-Temperature Processed Nb2O5as the Electron-Transporting Layer for Efficient Planar Perovskite Solar Cells
Authors:Ling, Xufeng (1); Yuan, Jianyu (1); Liu, Dongyang (1); Wang, Yongjie (1); Zhang, Yannan (1); Chen, Si (1); Wu, Haihua (1); Jin, Feng (3); Wu, Fupeng (1); Shi, Guozheng (1); Tang, Xun (1); Zheng, Jiawei (1); Liu, Shengzhong (2); Liu, Zhike (2); Ma, Wanli (1)
Author affiliation:(1) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou; 215123, China; (2) Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an; 710119, China; (3) Shanghai Ultra-Precision Optical Manufacturing Engineering Research Center, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai; 200433, China
Corresponding author:Liu, Zhike(zhike2015@snnu.edu.cn)
Source title:ACS Applied Materials and Interfaces
Abbreviated source title:ACS Appl. Mater. Interfaces
Volume:9
Issue:27
Issue date:July 12, 2017
Publication year:2017
Pages:23181-23188
Language:English
ISSN:19448244
E-ISSN:19448252
Document type:Journal article (JA)
Publisher:American Chemical Society
Abstract:In this work, we demonstrate high-efficiency planar perovskite solar cells (PSCs), using room-temperature sputtered niobium oxide (Nb2O5) as the electron-transporting layer (ETL). Widely spread ETL-like TiO2often requires high-temperature (>450 °C) sintering, which is not desired for the fabrication of flexible devices. The amorphous Nb2O5(labeled as a-Nb2O5) ETL, without any heat treatment, can give a best power conversion efficiency (PCE) of 17.1% for planar PSCs. Interestingly, the crystalline Nb2O5(labeled as c-Nb2O5), with high-temperature (500 °C) annealing, results in a very similar PCE of 17.2%, indicating the great advantage of a-Nb2O5in energy saving. We thus carried out a systematical investigation on the properties of the a-Nb2O5film. The Hall effect measurements indicate both high mobility and conductivity of the a-Nb2O5film. Kelvin probe force microscopy measurements define the Fermi levels of a-Nb2O5and c-Nb2O5as -4.31 and -4.02 eV, respectively, which allow efficient electron extraction at the Nb2O5/perovskite interface, regardless of the additional heat treatment on Nb2O5film. Benefitting from the low-temperature process, we further demonstrated flexible PSCs based on a-Nb2O5, with a considerable PCE of 12.1%. The room-temperature processing and relatively high device performance of a-Nb2O5suggest a great potential for its application in optoelectrical devices. 2017 American Chemical Society.
Number of references:59
Main heading:Niobium oxide
Controlled terms:Electrons - Energy conservation - Hall mobility - Interfaces (materials) - Perovskite - Perovskite solar cells - Sintering - Solar cells - Temperature - Titanium dioxide
Uncontrolled terms:Electron transporting layer - flexible - Hall effect measurement - Kelvin probe force microscopy - Low- temperature process - Nb2O5 - Power conversion efficiencies - Room temperature processing
Classification code:482.2 Minerals - 525.2 Energy Conservation - 641.1 Thermodynamics - 702.3 Solar Cells - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 933.3 Electronic Structure of Solids - 951 Materials Science
Numerical data indexing:Electron_Volt -4.02e+00eV, Percentage 1.21e+01%, Percentage 1.71e+01%, Percentage 1.72e+01%, Temperature 7.73e+02K
DOI:10.1021/acsami.7b05113
Funding details: Number: 2016YFA0202402, Acronym: -, Sponsor: -;Number: -, Acronym: -, Sponsor: Soochow University;Number: 61222401, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61674111, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The author thanks the Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University. This work was supported by the 111 projects, National Key Research Projects (Grant No. 2016YFA0202402), the National Natural Science Foundation of China (Grant Nos. 61222401 and 61674111). And we also acknowledge the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Database:Compendex
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<253>

Accession number:20171103452502
Title:4.62 kW excellent beam quality laser output with a low-loss Yb/Ce co-doped fiber fabricated by chelate gas phase deposition technique
Authors:Zheng, Jinkun (1, 2); Zhao, Wei (1); Zhao, Baoyin (1); Hou, Chaoqi (1); Li, Zhe (1); Li, Gang (1); Gao, Qi (1); Ju, Pei (1); Gao, Wei (1); She, Shengfei (1); Wu, Peng (2); Li, Weinan (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Zhao, Baoyin(joseph.zhao@opt.ac.cn)
Source title:Optical Materials Express
Abbreviated source title:Opt. Mater. Express
Volume:7
Issue:4
Issue date:2017
Publication year:2017
Pages:1259-1266
Language:English
E-ISSN:21593930
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A high-power Yb/Ce co-doped double-clad fiber with low optical loss was successfully fabricated by an optimized chelate gas phase deposition technique. It exhibits a nearly homogenous distribution of Al, Ce and Yb ions in the fiber core region, which reduce the clustering. The core attenuation at 1080 nm and 1383 nm are 12 dB/km and 46 dB/km, respectively, indicating high optical performance with a low optical loss. The amplifier stage with this fiber delivers 4.62 kW excellent beam quality (M2= 1.67) laser output with a slope efficiency of 80.3%. The experimental results show that the chelate gas phase deposition technique is a prospective method to fabricate a Yb/Ce co-doped fiber with low optical loss, which is beneficial for acquiring multi-kilowatt continuous-wave fiber laser with excellent beam quality. 2017 Optical Society of America.
Number of references:42
Main heading:Fiber amplifiers
Controlled terms:Chelation - Deposition - Fabrication - Fiber lasers - Fibers - Gases - Optical losses
Uncontrolled terms:Continuous Wave - Double clad fibers - Fiber cores - Gas-phase deposition techniques - Laser output - Nearly homogenous - Optical performance - Slope efficiencies
Classification code:741 Light, Optics and Optical Devices - 744.4 Solid State Lasers - 802.2 Chemical Reactions - 802.3 Chemical Operations
Numerical data indexing:Percentage 8.03e+01%, Power 4.62e+03W, Size 1.08e-06m, Size 1.38e-06m
DOI:10.1364/OME.7.001259
Funding details: Number: 61675229, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61138007, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was financially supported by the National Natural Science Foundation of China (NSFC) (No. 61675229, No. 61138007).

Database:Compendex
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<254>

Accession number:20172703894546
Title:Dimensionality Reduction by Spatial-Spectral Preservation in Selected Bands
Authors:Zheng, Xiangtao (1); Yuan, Yuan (1); Lu, Xiaoqiang (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Center for Optical Imagery Analysis and Learning (OPTIMAL), Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Lu, Xiaoqiang
Source title:IEEE Transactions on Geoscience and Remote Sensing
Abbreviated source title:IEEE Trans Geosci Remote Sens
Volume:55
Issue:9
Issue date:September 2017
Publication year:2017
Pages:5185-5197
Article number:7954794
Language:English
ISSN:01962892
CODEN:IGRSD2
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Dimensionality reduction (DR) has attracted extensive attention since it provides discriminative information of hyperspectral images (HSI) and reduces the computational burden. Though DR has gained rapid development in recent years, it is difficult to achieve higher classification accuracy while preserving the relevant original information of the spectral bands. To relieve this limitation, in this paper, a different DR framework is proposed to perform feature extraction on the selected bands. The proposed method uses determinantal point process to select the representative bands and to preserve the relevant original information of the spectral bands. The performance of classification is further improved by performing multiple Laplacian eigenmaps (LEs) on the selected bands. Different from the traditional LEs, multiple Laplacian matrices in this paper are defined by encoding spatial-spectral proximity on each band. A common low-dimensional representation is generated to capture the joint manifold structure from multiple Laplacian matrices. Experimental results on three real-world HSIs demonstrate that the proposed framework can lead to a significant advancement in HSI classification compared with the state-of-the-art methods. 2017 IEEE.
Number of references:60
Main heading:Classification (of information)
Controlled terms:Laplace transforms - Spectroscopy
Uncontrolled terms:Band selection - Classification accuracy - Computational burden - Dimensionality reduction - Laplacian eigenmaps - Low-dimensional representation - Point process - State-of-the-art methods
Classification code:716.1 Information Theory and Signal Processing - 921.3 Mathematical Transformations
DOI:10.1109/TGRS.2017.2703598
Funding details: Number: LSIT201408, Acronym: -, Sponsor: -;Number: QYZDB-SSW-JSC015, Acronym: -, Sponsor: -;Number: 2013CB336500, Acronym: -, Sponsor: -;Number: KGZD-EW-T03, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 60632018, Acronym: -, Sponsor: -;Number: 61232010, Acronym: -, Sponsor: -;Number: 61472413, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Basic Research Program of China (Youth 973 Program) under Grant 2013CB336500, in part by the State Key Program of National Natural Science of China under Grant 60632018, in part by the State Key Program of National Natural Science of China under Grant 61232010, in part by the National Natural Science Foundation of China under Grant 61472413, in part by the Key Research Program of the Chinese Academy of Sciences under Grant KGZD-EW-T03, in part by the Open Research Fund of the Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences, under Grant LSIT201408, and in part by the Young Top-Notch Talent Program of Chinese Academy of Sciences under Grant QYZDB-SSW-JSC015.

Database:Compendex
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Accession number:20171103436784
Title:Research on polarized optical properties of space target material
Authors:Yuan, Bo (1, 2); Gao, Jing (1); Yang, Fan-Chao (1, 2); Hu, Bing-Liang (1); Gao, Xiao-Hui (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Yang, Fan-Chao(frankyang1987@126.com)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:1
Issue date:January 1, 2017
Publication year:2017
Article number:0116003
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Based on the bidirectional reflectance model, the polarization characteristics and spectral radiosities of four space target samples, such as carbon fiber, carburizing film, F46 and OSR, were measured. By calculating the Stokes parameters of the samples, the degrees of linear polarization and polarization orientations under multiple observing angles were obtained and recorded. The statistical results show that, the different samples have great differences in average and variance of the degree of linear polarization and Orientation. The analysis of the difference between the average and variance of samples can improve the effects in detecting and identifying simples efficiently and solve the “Same object with different spectrums” and “Foreign body in the same spectrum” problems occurred in spectroscopic techniques. The polarization property provides more optical information for remote sensing, which is an effective and reliable method for target recognition. 2017, Science Press. All right reserved.
Number of references:13
Page count:8
Main heading:Polarization
Controlled terms:Carbon fibers - Crystal orientation - Optical properties - Remote sensing - Spectroscopic analysis
Uncontrolled terms:Average values - Degree of linear polarization - Spectral polarization - Stokes parameters - Variance
Classification code:741.1 Light/Optics - 801 Chemistry - 804 Chemical Products Generally - 933.1.1 Crystal Lattice
DOI:10.3788/gzxb20174601.0116003
Funding details: Number: 2015PFA10140, Acronym: -, Sponsor: -;Number: 61405239, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11327303, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11573058, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (Nos. 11573058, 61405239, 11327303, 61501456), the International S&T Cooperation Program of China(No.2015PFA10140).

Database:Compendex
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Accession number:20170703341448
Title:Discovering diverse subset for unsupervised hyperspectral band selection
Authors:Yuan, Yuan (1); Zheng, Xiangtao (1); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transit Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:1
Issue date:January 2017
Publication year:2017
Pages:51-64
Article number:7590041
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Band selection, as a special case of the feature selection problem, tries to remove redundant bands and select a few important bands to represent the whole image cube. This has attracted much attention, since the selected bands provide discriminative information for further applications and reduce the computational burden. Though hyperspectral band selection has gained rapid development in recent years, it is still a challenging task because of the following requirements: 1) an effective model can capture the underlying relations between different high-dimensional spectral bands; 2) a fast and robust measure function can adapt to general hyperspectral tasks; and 3) an efficient search strategy can find the desired selected bands in reasonable computational time. To satisfy these requirements, a multigraph determinantal point process (MDPP) model is proposed to capture the full structure between different bands and efficiently find the optimal band subset in extensive hyperspectral applications. There are three main contributions: 1) graphical model is naturally transferred to address band selection problem by the proposed MDPP; 2) multiple graphs are designed to capture the intrinsic relationships between hyperspectral bands; and 3) mixture DPP is proposed to model the multiple dependencies in the proposed multiple graphs, and offers an efficient search strategy to select the optimal bands. To verify the superiority of the proposed method, experiments have been conducted on three hyperspectral applications, such as hyperspectral classification, anomaly detection, and target detection. The reliability of the proposed method in generic hyperspectral tasks is experimentally proved on four real-world hyperspectral data sets. 1992-2012 IEEE.
Number of references:74
Main heading:Radar target recognition
Controlled terms:Hyperspectral imaging - Spectroscopy - Speech recognition
Uncontrolled terms:Anomaly detection - Band selection - Computational burden - Feature selection problem - Hyper-spectral classification - Multiple dependencies - multiple graphs - Point process
Classification code:716.2 Radar Systems and Equipment - 751.5 Speech
DOI:10.1109/TIP.2016.2617462
Funding details: Number: LSIT201408, Acronym: -, Sponsor: -;Number: QYZDB-SSW-JSC015, Acronym: -, Sponsor: -;Number: 2013CB336500, Acronym: -, Sponsor: -;Number: KGZD-EWT03, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61232010, Acronym: -, Sponsor: -;Number: 61472413, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported in part by the National Basic Research Program of China (Youth 973 Program) under Grant 2013CB336500, in part by the State Key Program of National Natural Science of China under Grant 61232010, in part by the National Natural Science Foundation of China under Grant 61472413, in part by the Key Research Program of the Chinese Academy of Sciences under Grant KGZD-EWT03, in part by the Open Research Fund of the Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences under Grant LSIT201408, and in part by the Young Top-Notch Talent Program of Chinese Academy of Sciences under Grant QYZDB-SSW-JSC015.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<257>

Accession number:20170603331857
Title:Watt-level high-power passively Q-switched laser based on a black phosphorus solution saturable absorber
Authors:Wang, Xi (1, 2); Wang, Zhenfu (1); Wang, Yonggang (1, 3); Li, Lu (1, 2); Yang, Guowen (1); Li, Jinping (3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Physics and information Technology, Shaanxi Normal University, Xi'an; 710119, China
Corresponding author:Wang, Yonggang(chinawygxjw@snnu.edu.cn)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:15
Issue:1
Issue date:January 10, 2017
Publication year:2017
Article number:011402
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A novel black phosphorus (BP) solution saturable absorber (SA) is fabricated by the liquid-phase-exfoliated method and successfully used for passively Q-switched (QS) Nd:YVO4laser. Compared with a traditional solid SA, a BP solution SA possesses more excellent optical transparency and higher damage resistance. The shortest pulse duration and highest average output power are measured to be 119 ns and 1.23 W, respectively. To the best of our knowledge, both of them are the best results among QS solid-state lasers with BP-based absorbers so far. The repetition rate is in the range of 533.2 to 722 kHz. The results indicate the potential application of the BP solution SA into high-power solid-state pulse lasers. 2017 Chinese Optics Letters.
Number of references:35
Page count:5
Main heading:Solid state lasers
Controlled terms:Phosphorus - Q switched lasers - Q switching - Saturable absorbers
Uncontrolled terms:Average output power - Damage resistance - Nd:YVO4 laser - Optical transparency - Passively Q-switched - Passively Q-switched lasers - Pulse durations - Repetition rate
Classification code:744 Lasers - 804 Chemical Products Generally
Numerical data indexing:Frequency 5.33e+05Hz to 7.22e+05Hz, Power 1.23e+00W, Time 1.19e-07s
DOI:10.3788/COL201715.011402
Funding details: Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant 61378024.

Database:Compendex
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<258>

Accession number:20173104014165
Title:Design of a smooth freeform illumination system for a point light source based on polar-type optimal transport mapping
Authors:Mao, Xianglong (1); Xu, Songbo (1); Hu, Xinrong (1); Xie, Yongjun (1)
Author affiliation:(1) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China
Corresponding author:Xie, Yongjun(yjxie@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:56
Issue:22
Issue date:August 1, 2017
Publication year:2017
Pages:6324-6331
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:A design method is proposed to generate smooth freeform illumination optics for a point light source based on the L2optimal transport (LOT) mapping. In this method, the LOT mapping between an assumed circular planar source and a prescribed target is first obtained by solving a polar-type LOT problem. Then, the mapping calculated for the circular source is applied for a point light source. Finally, the freeform optical surface is generated by a geometric construction method to realize the ray mapping. As examples, a series of smooth-surface freeform lenses are designed for a point light source to form uniform and complex illumination patterns on rectangular targets. The ray-tracing results show that all the designs achieve excellent performance with the light utilization efficiency η over 0.87 (Fresnel loss considered) and the relative standard deviation (RSD) of the simulated illumination distribution less than 0.051 simultaneously. 2017 Optical Society of America.
Number of references:35
Main heading:Light
Controlled terms:Design - Light sources - Mapping - Ray tracing
Uncontrolled terms:Freeform illuminations - Geometric construction - Illumination distribution - Illumination patterns - Light utilization - Optimal transport - Point light source - Relative standard deviations
Classification code:405.3 Surveying - 741.1 Light/Optics
DOI:10.1364/AO.56.006324
Funding details: Number: XAB2015B29, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: XAB2016B22, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:?Light of West China? Program, Chinese Academy of Sciences (CAS) (XAB2015B29, XAB2016B22).

Database:Compendex
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<259>

Accession number:20173104011751
Title:Leveraging Spatial Context Disparity for Power Line Detection
Authors:Pan, Chaofeng (1, 4); Shan, Haotian (1, 4); Cao, Xianbin (1); Li, Xuelong (2, 3); Wu, Dapeng (1, 5)
Author affiliation:(1) School of Electronics and Information Engineering, Beihang University, and National Key Laboratory of CNS/ATM, Beijing; 100191, China; (2) The Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; Shaanxi; 710119, China; (3) The University of Chinese Academy of Sciences, Beijing; 100049, China; (4) School of Electronics and Information Engineering, Beihang University, Beijing Laboratory for General Aviation Technology, Beijing; 100191, China; (5) University of Florida, Gainesville; FL, United States
Corresponding author:Cao, Xianbin(xbcao@buaa.edu.cn)
Source title:Cognitive Computation
Abbreviated source title:Cognitive Comput.
Volume:9
Issue:6
Issue date:December 1, 2017
Publication year:2017
Pages:766-779
Language:English
ISSN:18669956
E-ISSN:18669964
Document type:Journal article (JA)
Publisher:Springer New York LLC
Abstract:For the safety of low flying aircraft, it will become increasingly important that an aircraft should have the ability to detect and avoid small obstacles in the low flying environment. In recent years, using context information to assist in detecting power lines has shown great potential to better detect power lines at a remote distance. Therefore, how to adequately use the context information for a better detection is a hot issue of concern. This paper proposes a novel auxiliary assisted power line detection method, in which the spatial context disparity of auxiliaries is quantitatively and uniformly evaluated for the first time. As a cognitive strategy, the spatial context disparity depends on two factors, the spatial context peakedness and the spatial context difference. With this cognitive method, objects that achieve high spatial context disparity scores are more suitable for being the auxiliaries of the power lines. Experimental results show that, owing to the spatial context disparity, the proposed method can acquire proper auxiliaries with abundant context information to support the detection, so that better power line detections are achieved comparing to traditional power line detection methods. The proposed power line detection method, which can automatically choose the optimal auxiliaries, is effective and has the potential for practical use in ensuring the flight safety of unmanned air vehicles (UAVs) in the low flying environment. 2017, Springer Science+Business Media, LLC.
Number of references:51
Main heading:Aircraft detection
Controlled terms:Fighter aircraft - Information use - Learning systems - Semantics
Uncontrolled terms:Auxiliaries - Cognitive methods - Cognitive Strategy - Context information - Detect and avoid - Power lines - Spatial context - Unmanned air vehicle (UAVs)
Classification code:652.1.2 Military Aircraft - 716.2 Radar Systems and Equipment - 903.3 Information Retrieval and Use
DOI:10.1007/s12559-017-9488-y

Database:Compendex
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<260>

Accession number:20172703873676
Title:Three-dimensional characterization of tightly focused fields for various polarization incident beams
Authors:Cai, Yanan (1, 2); Liang, Yansheng (1, 2); Lei, Ming (1); Yan, Shaohui (1); Wang, Zhaojun (1, 2); Yu, Xianghua (1); Li, Manman (1, 2); Dan, Dan (1); Qian, Jia (1, 2); Yao, Baoli (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Review of Scientific Instruments
Abbreviated source title:Rev. Sci. Instrum.
Volume:88
Issue:6
Issue date:June 1, 2017
Publication year:2017
Article number:063106
Language:English
ISSN:00346748
E-ISSN:10897623
CODEN:RSINAK
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:Tightly focused vectorial optical beams have found extensive applications in variety of technical fields like single-molecule detection, optical tweezers, and super-resolution optical microscopy. Such applications require an accurate measurement and manipulation of focal optical fields. We have developed a compact instrument (with dimensions of 35 × 35 × 30 cm3) to rapidly measure the intensity distribution in three dimensions of the focused fields of vectorial beams and any other incident beams. This instrument employs a fluorescent nanoparticle as a probe to scan the focal region to obtain a high spatial resolution of intensity distribution. It integrates a liquid-crystal spatial light modulator to allow for tailoring the point spread function of the optical system, making it a useful tool for multi-purpose and flexible research. The robust applicability of the instrument is verified by measuring the 3D intensity distributions of focal fields of various polarization and wavefront modulated incident beams focused by a high NA (=1.25) objective lens. The minimal data acquisition time achievable in the experiment is about 8 s for a scanning region of 3.2 × 3.2 μm2(512 × 512 pixels). The measured results are in good agreement with those predicted by the vectorial diffraction theory. 2017 Author(s).
Number of references:25
Main heading:Optical tweezers
Controlled terms:Data acquisition - Light modulators - Liquid crystals - Optical systems - Optical transfer function - Polarization
Uncontrolled terms:Accurate measurement - Dimensional characterization - Fluorescent nanoparticles - High spatial resolution - Intensity distribution - Liquid crystal spatial light modulators - Single-molecule detection - Vectorial diffraction theories
Classification code:723.2 Data Processing and Image Processing - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 744.9 Laser Applications
Numerical data indexing:Time 8.00e+00s, Volume 3.00e-05m3
DOI:10.1063/1.4989519

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<261>

Accession number:20180504692888
Title:Fabrication and optical performances measurements of flexible chalcogenide imaging fiber bundles
Authors:Wang, Xing-Feng (1, 2); Yang, Jian-Feng (1); Yan, Xing-Tao (1); Chen, Guo-Qing (1, 2); Xu, Yan-Tao (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing; 101408, China
Corresponding author:Yan, Xing-Tao(yanxt@opt.ac.cn)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:25
Issue:12
Issue date:December 1, 2017
Publication year:2017
Pages:3137-3144
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:The academic meanings of infrared imaging fiber bundles were researched and their fabrication technologies were given. A kinds of flexible chalcogenide infrared imaging fiber bundles were fabricated, and their characteristics were tested. By taking As40S58Se2and As40S60as the rod and tube materials, the fibers were drawn by rod-in-tube technique. The infrared imaging fiber bundle with a core diameter of 40 μm and a cladding diameter of 50 μm was prepared by man-machine-integration technique and it shows squared arrangement which incorporates 576 individual fibers. A special experimental equipment was constructed. The properties of this imaging fiber bundle including spatial arrangement and shaping, blind-fiber ratio and optical transmission efficiency were measured, and the decrease of Modulation Transfer Function (MTF) in the system caused by infrared imaging fiber bundle were measured. Experimental results indicate that the fiber bundle shows a good spatial arrangement and shaping. The blind-fiber ratio is 2.7%, fiber attenuation loss is lower than 0.5 dB/m, and the optical efficiency is almost 31%. Moreover, The decrease of MTF resulted from the fiber bundle in the system is less than 10%. Finally, an infrared imaging experiment was implemented, and the result shows that fine infrared thermal images have been delivered through this system. 2017, Science Press. All right reserved.
Number of references:19
Main heading:Optical fiber fabrication
Controlled terms:Arsenic compounds - Chalcogenides - Efficiency - Fibers - Light transmission - Optical transfer function - Selenium compounds - Sulfur compounds - Thermography (imaging)
Uncontrolled terms:Chalcogenide glass fibers - Experimental equipments - Fabrication Technologies - Imaging fiber bundle - Infrared imaging technology - Infrared thermal image - Modulation transfer function (MTF) - Transmission efficiency
Classification code:741.1 Light/Optics - 741.1.2 Fiber Optics - 742.1 Photography - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 1.00e+01%, Percentage 2.70e+00%, Percentage 3.10e+01%, Size 4.00e-05m, Size 5.00e-05m
DOI:10.3788/OPE.20172512.3137

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<262>

Accession number:20173504100414
Title:Modeling and research of infrared characteristics of space target based on radiation dissipation
Authors:Li, Wenhao (1, 2); Liu, Zhaohui (1); Mu, You (1); Liang, Dongsheng (1); Yang, Rui (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:46
Issue:6
Issue date:June 25, 2017
Publication year:2017
Article number:0604003
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:Radiators used to maintain space target functioning normal were introduced. Operating mode and working condition were presented. Current used space target infrared characteristics models were summarized. With further analysis, the outside surface of space target were divided into common area and radiator, and energy equations were built separately. Taking FY-1C as an example, and taking account of orbit, materials and structure, temperature field of the outer surface of space target was calculated using finite element method. When dissipation power was 0 W and 100 W, the biggest temperature difference of radiator was 51.49℃. Analyzing the temperature field with orbit, the illumination in entrance pupil of detection system in a distance of 5 km was calculated. When space target was in the shadow of earth, during which the radiation from earth or solar radiation reflected by earth was negligible because of the big incident angle, the illumination of the space target differed by 1-2 orders of magnitude. When space target was under the sun, different dissipation powers can only affect the illumination of long infrared spectra apparently, because of the reflected radiation of target. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:10
Main heading:Earth (planet)
Controlled terms:Finite element method - Incident solar radiation - Orbits - Radiators - Temperature
Uncontrolled terms:Detection system - Incident angles - Infrared characteristics - Model and simulation - Operating modes - Orders of magnitude - Space targets - Temperature differences
Classification code:616.1 Heat Exchange Equipment and Components - 641.1 Thermodynamics - 657.1 Solar Energy and Phenomena - 921.6 Numerical Methods
Numerical data indexing:Power 0.00e+00W, Power 1.00e+02W, Size 5.00e+03m
DOI:10.3788/IRLA201746.0604003

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<263>

Accession number:20171003425216
Title:Influence of Layup and Curing on the Surface Accuracy in the Manufacturing of Carbon Fiber Reinforced Polymer (CFRP) Composite Space Mirrors
Authors:Yang, Zhiyong (1, 2); Zhang, Jianbao (2); Xie, Yongjie (3); Zhang, Boming (1); Sun, Baogang (2); Guo, Hongjun (2)
Author affiliation:(1) School of Material Science and Engineering, Beihang University, Beijing; 100191, China; (2) Aerospace Research Institute of Materials & Processing Technology, Beijing; 100076, China; (3) Xi’an Institute of Optics & Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710068, China
Corresponding author:Yang, Zhiyong(yzy512007@163.com)
Source title:Applied Composite Materials
Abbreviated source title:Appl Compos Mater
Volume:24
Issue:6
Issue date:December 1, 2017
Publication year:2017
Pages:1447-1458
Language:English
ISSN:0929189X
E-ISSN:15734897
CODEN:APCMEL
Document type:Journal article (JA)
Publisher:Springer Netherlands
Abstract:Carbon fiber reinforced polymer, CFRP, composite materials have been used to fabricate space mirror. Usually the composite space mirror can completely replicate the high-precision surface of mould by replication process, but the actual surface accuracy of replicated space mirror is always reduced, still needed further study. We emphatically studied the error caused by layup and curing on the surface accuracy of space mirror through comparative experiments and analyses, the layup and curing influence factors include curing temperature, cooling rate of curing, method of prepreg lay-up, and area weight of fiber. Focusing on the four factors, we analyzed the error influence rule and put forward corresponding control measures to improve the surface figure of space mirror. For comparative analysis, six CFRP composite mirrors were fabricated and surface profile of mirrors were measured. Four guiding control measures were described here. Curing process of composite space mirror is our next focus. 2017, Springer Science+Business Media Dordrecht.
Number of references:13
Main heading:Carbon fiber reinforced plastics
Controlled terms:Cooling - Curing - Fiber reinforced materials - Fiber reinforced plastics - Fibers - Mirrors - Reinforced plastics - Reinforcement
Uncontrolled terms:Carbon fiber reinforced polymer - Carbon fiber reinforced polymer composite - CFRP composites - Comparative analysis - Comparative experiments - Cooling rates - Curing temperature - Prepregs
Classification code:641.2 Heat Transfer - 741.3 Optical Devices and Systems - 802.2 Chemical Reactions - 817.1 Polymer Products - 951 Materials Science
DOI:10.1007/s10443-017-9595-7

Database:Compendex
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<264>

Accession number:20171703607570
Title:Design of a common-aperture VIS/LWIR imaging optical system with muti-field of view
Authors:Jing, Duan (1); Kai, Liu (1); Gang, Li (1, 2); Peipei, Yan (1, 2); Qiusha, Shan (1); Kai, Jiang (1)
Author affiliation:(1) Photoelectric Track and Measurement Technology Research Department, Xi'an Institute of Optics and Precision Mechanics, CAS, Shaanxi Xi'an; 710119, China; (2) University of the Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102563Z
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:In order to achieve the multi-band and multi-field of view imaging for target and to meet the needs of target detection for large amount of information, a common-aperture visible light/long-wave infrared(VIS/LWIR) imaging optical system with muti-field of view was designed. In this paper, the aperture is 400mm, the working wavelength is 500~700nm and 7.5~10μm, the temperature range is -15°C+50°C, this system can realize 1500mm and 3000mm dual focal length(VIS), the full field of view of short focal length is 1.16° and long focal length is 0.58° respectively, and realize 1400mm focal length(LWIR) and the full field of view of 0.54°, satisfy 100% cold shield efficiency. A re-imaging system was adopted in this designed optical system consists of main optics, VIS projection components and LMIR projection components. First of all, the structural selection and the initial parameter calculation were introduced in detail. Secondly, to improve image quality and environment adaptability, the analysis of temperature change was described particularly and the structural design requirements were put forward according to the analysis of the data. The design results proved that at the spatial frequency of 50 lp/mm, the axis MTF of the VIS system is greater than 0.48, the MTF of the LWIR system approaches the diffraction limit, the system can offer a high resolution and excellent images in whole range of the focal length, and it has the advantages of good adaptability, compact structure and small size, the results satisfy the design requirement. 2017 SPIE.
Number of references:7
Main heading:Optical systems
Controlled terms:Cold working - Diffraction - Image enhancement - Imaging systems - Infrared radiation - Optical design - Optical transfer function - Photonics - Quality control
Uncontrolled terms:Common aperture - Compact structures - Diffraction limits - Field of views - Imaging optical systems - Long focal lengths - Short focal lengths - Temperature changes
Classification code:535.2 Metal Forming - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 746 Imaging Techniques - 913.3 Quality Assurance and Control
Numerical data indexing:Percentage 1.00e+02%, Size 1.40e+00m, Size 1.50e+00m, Size 3.00e+00m, Size 4.00e-01m
DOI:10.1117/12.2257878

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<265>

Accession number:20173804169352
Title:Autofocus window selection algorithm based on visual saliency
Authors:Wei, Zhaoqi (1, 2); Su, Xiuqin (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, China; (2) University of Chinese Academy of Sciences, Beijing, China
Source title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017
Abbreviated source title:Int. Conf. Image, Vis. Comput., ICIVC
Part number:1 of 1
Issue title:2017 2nd International Conference on Image, Vision and Computing, ICIVC 2017
Issue date:July 18, 2017
Publication year:2017
Pages:720-723
Article number:7984650
Language:English
ISBN-13:9781509062379
Document type:Conference article (CA)
Conference name:2nd International Conference on Image, Vision and Computing, ICIVC 2017
Conference date:June 2, 2017 - June 4, 2017
Conference location:Chengdu, China
Conference code:129351
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Aiming at the problem of Autofocus window selection in imaging system, a new algorithm based on visual saliency for Autofocus window selection is proposed, which provides a new solution. A re-designed Itti model is used to predict the salient region in the visual scene. By choosing the local maxima in the saliency map to be the seed, the most salient region can be obtained by growing around it and a minimum enclosing rectangle can be found as the focus window. In this paper, the focus window selection based on visual saliency can efficiently capture the visual salient region and the position of general target well, highlight potential focus targets and improves the accuracy of focusing. Compared with the common focusing window selection algorithm, the method proposed in this paper can improve the focusing performance of the imaging system and has wider applicability in the general scene. 2017 IEEE.
Number of references:16
Main heading:Visualization
Controlled terms:Computer vision - Focusing - Imaging systems
Uncontrolled terms:Auto focus - Focusing performance - Local maximum - Minimum enclosing rectangle - Salient regions - Self-adaptability - Visual saliency - Window selection
Classification code:723.5 Computer Applications - 746 Imaging Techniques
DOI:10.1109/ICIVC.2017.7984650

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<266>

Accession number:20175304592810
Title:The study of quantum spectral imaging
Authors:Bi, Siwen (1, 2); Wang, Guoguo (2); Wang, Li (2); Chen, Mingrui (2); Dou, Xibo (2); Liu, Wangyun (2); Chen, Lu (2); Lu, Baozhu (2)
Author affiliation:(1) Institute of Remote Sensing and Digital Earth, Chinese Academy of Science, State Key Laboratory of Remote Sensing Science, Peking; 100101, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, State Key Laboratory of Transient Optics and Photonics, Xi'an; 710068, China
Corresponding author:Bi, Siwen
Volume:10111
Part number:1 of 1
Issue title:Quantum Sensing and Nano Electronics and Photonics XIV 2017
Issue date:2017
Publication year:2017
Article number:101113D
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510606630
Document type:Conference article (CA)
Conference name:Quantum Sensing and Nano Electronics and Photonics XIV 2017
Conference date:January 29, 2017 - February 2, 2017
Conference location:San Francisco, CA, United states
Conference code:128432
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:At the beginning of 2001, Professor Siwen Bi first proposed the new direction of quantum remote sensing at home and abroad. Based on the research of fundamental theory and information mechanism of quantum remote sensing, a new concept of quantum spectral imaging was put forward in August 2006. 10 years, quantum spectral imaging research has made breakthrough progress and stage results. Firstly, the research status of spectral imaging and the background of quantum spectrum imaging are introduced. Secondly, the concept and research methods of quantum spectrum imaging, the relationship between quantum spectrum imaging and spectral imaging and advantages are introduced. The basic theory of quantum spectroscopy is described, especially the research of quantum spectroscopy imaging and quantum spectroscopy. Finally, the significance and application prospect of quantum spectrum imaging are described. 2017 SPIE.
Number of references:22
Main heading:Spectroscopy
Controlled terms:Experiments - Nanoelectronics - Remote sensing
Uncontrolled terms:Application prospect - Basic theory - Fundamental theory - Light fields - Quantum spectrum - Research status - Spectral imaging
Classification code:761 Nanotechnology - 901.3 Engineering Research
Numerical data indexing:Age 1.00e+01yr
DOI:10.1117/12.2250112

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<267>

Accession number:20180404671093
Title:Design of inspection system for surface defects on industrial parts under complex background
Authors:Wang, Yudan (1, 2); Wen, Desheng (1); Song, Zongxi (1)
Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104620P
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:This work aims at detecting defects on metallic industrial parts with complex surface. The searched defects are scar, rust and inclusion. A specific inspection system has been designed to deal with the particular inspected surface features. In the system, two images are acquired with the help of multiple light sources and CCD color digital camera. Based on the traditional algorithm, the background removal algorithm is designed in this article, and the color image feature extraction is also used for auxiliary analysis. A thresholding processing is then applied on this image in order to segment the imperfections. The perimeter and area of defects are calculated to further identifies the characteristics. The developed inspection system has been tested and it can accurately detect the defects of industrial parts with complex background. The recognition rate of algorithm is more than 96%. 2017 SPIE.
Number of references:9
Main heading:Surface defects
Controlled terms:Extraction - Feature extraction - Fourier transforms - Image segmentation - Inspection - Inspection equipment - Light sources
Uncontrolled terms:Background removal algorithms - Color digital cameras - Complex background - Detecting defects - Inspection system - Multiple light source - Surface defect detections - Thresholding
Classification code:802.3 Chemical Operations - 913.3.1 Inspection - 921.3 Mathematical Transformations - 951 Materials Science
Numerical data indexing:Percentage 9.60e+01%
DOI:10.1117/12.2282664

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<268>

Accession number:20174304306489
Title:Study on Single Dispersion Spectral Imager Based on Compressed Coding
Authors:Tang, Xing-Jia (1, 2); Li, Li-Bo (1); Zhao, Qiang (1); Li, Hong-Bo (1); Hu, Bing-Liang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Mathematics and Statistics, Xi'an Jiaotong University, Xi'an; 710149, China
Corresponding author:Li, Li-Bo(lilibo@opt.ac.cn)
Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi
Volume:37
Issue:9
Issue date:September 1, 2017
Publication year:2017
Pages:2919-2926
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press
Abstract:With the development of spectral imaging towards higher space resolution, higher spectral resolution and higher signal to noise ratio, some problems have appeared in the traditional spectral imager, for example, data acquisition quantity is too big, the resolution is affected by frame frequency and pixel size of detector, precise alignment is difficult for big caliber and long focus system, and hard to develop signal to noise ratio because of limited optics power. To solve the above problems, a single dispersion spectral imager based on compressed coding is studied. Specially, for the lack of system realization and experiment verification at home, the designation, realization, mathematic model and reconstruction algorithm under multi-frame measurement are mainly studied, and the prototype testing and data processing are achieved. At last, some key problems still need to study, such as code error analysis, multi-model and multi-algorithm, system demarcation, and reconstruction evaluation. This imaging system is consisted of object glass, coding template, dispersion element, collimating lens, focus lens and detector, and hyperspectral data was reconstructed by sparse reconstruction algorithm. There are many advantages in the new system, for example, a smaller data size due to the sparse sample of multi-information, a higher resolution because of code super-resolution, an easier implementation for lower hardware requirement, a higher optical energy usage because the code is instead of slit. The results show that the measurement is efficient, the design of prototype is proper, reconstruction algorithm and calibration method are accurate, the space information of alphabet HSI object is clear, and the spectral information of alphabet HSI object is accurate and closed to tungsten lamp spectral, so the system designation and engineering realization are feasible. 2017, Peking University Press. All right reserved.
Number of references:11
Main heading:Image processing
Controlled terms:Codes (symbols) - Data acquisition - Data handling - Dispersions - Energy utilization - Hyperspectral imaging - Incandescent lamps - Problem solving - Signal to noise ratio - Spectroscopy
Uncontrolled terms:Compressed coding - Engineering realizations - Experiment verification - Multi-frame - Reconstruction algorithms - Sparse reconstruction - Spectral imaging - Spectral information
Classification code:525.3 Energy Utilization - 707.2 Electric Lamps - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 951 Materials Science
DOI:10.3964/j.issn.1000-0593(2017)09-2919-08

Database:Compendex
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<269>

Accession number:20164703044365
Title:Er-doped mode-locked fiber laser with WS2/fluorine mica (FM) saturable absorber
Authors:Li, Lu (1, 4); Wang, Yonggang (1, 2); Wang, Xi (1); Yang, Guowen (1); Jiang, Shouzhen (3); Li, Zhen (3); Man, Baoyuan (3); Wang, Yishan (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (3) School of Physics and Electronics, Shandong Normal University, Jinan; 250014, China; (4) School of Science, Xi'an University of Posts and Telecommunications, Xi'an; 710121, China
Corresponding author:Wang, Yonggang(chinawygxjw@snnu.edu.cn)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:90
Issue date:May 1, 2017
Publication year:2017
Pages:109-112
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:The report presents conventional soliton operation in an anomalous-dispersion fiber laser with a novel WS2saturable absorber (SA) based on fluorine mica (FM) substrate. Compared to organic host material such as polymer composite, FM has higher softening temperature, heat dissipation and laser damage threshold. In this work, the modulation depth (MD) and non-saturable loss (NL) of WS2/FM SA are measured to be 3.1% and 15%, respectively. By employing the SA, a stable conventional soliton mode-locked fiber laser is achieved. The repetition rate is 8.2 MHz and the pulse duration is 830 fs. The fiber laser works in mode locking operation for at least ten days and no damage of the SA is observed. The results indicate that WS2/FM material is an ideal SA for Er-doped fiber (EDF) lasers. 2016 Elsevier Ltd
Number of references:45
Main heading:Mode-locked fiber lasers
Controlled terms:Dispersions - Fiber lasers - Fibers - Frequency modulation - Laser damage - Locks (fasteners) - Mica - Optical materials - Organic lasers - Pulse repetition rate - Saturable absorbers - Silicate minerals - Solitons - Tungsten compounds
Uncontrolled terms:Anomalous dispersion - Laser damage threshold - Mode-locked - Modulation depth - Non-linear optical material - Non-saturable loss - Polymer composite - Softening temperature
Classification code:482.2 Minerals - 741.3 Optical Devices and Systems - 744 Lasers - 951 Materials Science
Numerical data indexing:Frequency 8.20e+06Hz, Percentage 1.50e+01%, Percentage 3.10e+00%, Time 8.30e-13s
DOI:10.1016/j.optlastec.2016.10.011
Funding details: Number: 61205174, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11474187, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61378024, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by National Natural Science Foundation of China under Grants 61378024, 61205174, and 11474187.

Database:Compendex
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Accession number:20181605026929
Title:Introduction to the high energy cosmic-radiation detection (HERD) facility onboard China's future space station
Authors:Zhang, Shuang-Nan (1, 3); Adriani, Oscar (12); Albergo, Sebastiano (6); Ambrosi, Giovanni (7); An, Qi (27); Azzarello, Philippe (8); Bai, Yonglin (9); Bao, Tianwei (10); Bernardini, Paolo (17); Bertucci, Bruna (13); Bi, Xiaojun (1); Bongi, Massimo (12); Bottai, Sergio (15); Cao, Weiwei (2); Cao, Zhen (1); Chai, Junying (1, 3); Chang, Jin (28); Chen, Guoming (1); Chen, Y. (21); Chen, Zhen (2); Cui, X.H. (22); Dai, Z.G. (21); D'Alessandro, Raffaello (12); Di Santo, Margherita (11); Dong, Yongwei (1); Duranti, Matteo (7); Fan, Y.Z. (28); Fang, Kun (1); Feng, C.Q. (27); Feng, Hua (4); Formato, Valerio (7); Fusco, Piergiorgio (18); Gao, Jiarui (2); Gargano, Fabio (14); Giglietto, Nicola (18); Gou, Q.B. (1); Guo, Y.Q. (1); He, H.H. (1); Hu, H.B. (1); Hu, Peng (1, 3); Huang, G.S. (27); Huang, J. (1); Huang, Y.F. (21); Li, H. (1); Li, Ran (2); Li, Yong (2); Li, Z. (23); Liang, E.W. (5); Lin, Sujie (1); Liu, H. (1); Liu, Hongbang (5); Liu, J.B. (27); Liu, S.B. (27); Liu, S.M. (28); Liu, Xin (1, 3); Loparco, Francesco (18); Lyu, Junguang (1); Marsella, Giovanni (17); Mazziottai, Mario Nicola (14); De Mitri, Ivan (17); Mori, Nicola (15); Papini, Paolo (15); Pearce, Mark (19); Peng, Wenxi (1); Pohl, Martin (8); Quan, Zheng (1); Ryde, Felix (19); Shi, Dalian (2); Su, Meng (20); Sun, X.L. (1); Sun, Xin (2); Surdo, Antonio (11); Tang, Z.C. (1); Vannuccini, Elena (15); Walter, Roland (8); Wang, Bingbing (16); Wang, Bo (2); Wang, J.C. (24); Wang, J.M. (1); Wang, Junjing (1, 3); Wang, Le (2); Wang, Ruijie (1); Wang, X.L. (27); Wang, X.Y. (21); Wang, Zhigang (1); Wei, D.M. (28); Wu, Bobing (1); Wu, J. (25); Wu, Qiong (4); Wu, Xin (8); Wu, X.F. (28); Xu, Ming (1); Xu, Z.Z. (27); Yan, H.R. (23); Yin, P.F. (1); Yu, Y.W. (26); Yuan, Q. (28); Zha, M. (1); Zhang, L. (1); Zhang, Li (1); Zhang, Y. (1); Zhang, Y.L. (27); Zhao, Z.G. (27)
Author affiliation:(1) Key Laboratory of Particle and Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an, Shaanxi, China; (3) University of Chinese, Academy of Sciences, Beijing, China; (4) Department of Engineering Physics, Center for Astrophysics, Tsinghua University, Beijing, China; (5) Department of Physics, Guangxi University, Nanning, China; (6) Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Catania, Italy; (7) Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Perugia, Italy; (8) Nuclear and Corpuscular Physics Department, University of Geneva, Geneva, Switzerland; (9) University of Pisa, Pisa, Italy; (10) Istituto Nazionale di Fisica Nucleare, Sezione di Trento, Trento, Italy; (11) Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, Lecce, Italy; (12) University of Florence, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, Firenze, Italy; (13) University of Perugia, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Perugia, Italy; (14) Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Bari, Italy; (15) Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, Firenze, Italy; (16) ISDC, University of Geneva, Geneva, Switzerland; (17) Universita' del Salento, Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, Lecce, Italy; (18) Dipartimento di Fisica, Univerisit'a del Politecnico di Bari, Istituto Nazionale di Fisica Nucleare, Bari, Italy; (19) KTH Royal Institute of Technology, Stockholm, Sweden; (20) Hong Kong University, Hong Kong; (21) School of Astronomy and Space Science, Nanjing University, Nanjing, China; (22) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China; (23) Department of Astronomy, Peking University, Beijing, China; (24) Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, China; (25) Department of Physics, China University of Geosciences, Wuhan, China; (26) Institute of Astrophysics, Central China Normal University, Wuhan, China; (27) Department of Modern Physics, University of Science and Technology of China, Hefei, China; (28) Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, China
Source title:Proceedings of Science
Abbreviated source title:Proc. Sci.
Part number:1 of 1
Issue title:35th International Cosmic Ray Conference, ICRC 2017
Issue date:2017
Publication year:2017
Language:English
E-ISSN:18248039
Document type:Conference article (CA)
Conference name:35th International Cosmic Ray Conference, ICRC 2017
Conference date:July 10, 2017 - July 20, 2017
Conference location:Bexco, Busan, Korea, Republic of
Conference code:135186
Publisher:Sissa Medialab Srl
Abstract:The High Energy cosmic-Radiation Detection (HERD) facility is one of several space astronomy payloads onboard China's Space Station, which is planned for operation starting around 2025 for about 10 years. The main scientific objectives of HERD are searching for signals of dark matter annihilation products, precise cosmic electron (plus positron) spectrum and anisotropy measurements up to 10 TeV, precise cosmic ray spectrum and composition measurements up to the knee energy, and high energy gamma-ray monitoring and survey. HERD is composed of a 3-D cubic calorimeter (CALO) surrounded by microstrip silicon trackers (STKs) from five sides except the bottom. CALO is made of about 7,500 cubes of LYSO crystals, corresponding to about 55 radiation lengths and 3 nuclear interaction lengths, respectively. The top STK microstrips of six X-Y layers are sandwiched with tungsten converters to make precise directional measurements of incoming electrons and gamma-rays. In the baseline design, each of the four side STKs is made of only three layers microstrips. All STKs will also be used for measuring the charge and incoming directions of cosmic rays, as well as identifying back scattered tracks. With this design, HERD can achieve the following performance: energy resolution of 1% for electrons and gamma-rays beyond 100 GeV and 20% for protons from 100 GeV to 1 PeV; electron/proton separation power better than 10-5; effective geometrical factors of >3 m2sr for electron and diffuse gamma-rays, >2 m2sr for cosmic ray nuclei. R&D is under way for reading out the LYSO signals with optical fiber coupled to image intensified IsCMOS and CALO prototype of 250 LYSO crystals. Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND 4.0).
Number of references:30
Main heading:Gamma rays
Controlled terms:Cosmic ray measurement - Cosmic rays - Cosmology - Electrons - Germanium compounds - Optical fibers - Space stations
Uncontrolled terms:Anisotropy measurements - Annihilation products - Composition measurements - Directional measurement - Geometrical factors - Microstrip silicon tracker - Nuclear interaction - Scientific objectives
Classification code:656.1 Space Flight - 657 Space Physics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 741.1.2 Fiber Optics - 931.3 Atomic and Molecular Physics
Numerical data indexing:Age 1.00e+01yr, Electron_Volt 1.00e+11eV, Electron_Volt 1.00e+13eV, Percentage 1.00e+00%, Percentage 2.00e+01%
Funding details: Number: QYZDY-SSW-SLH008, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 113111KYSB20160053, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 11327303, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11473028, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:?Speaker. ?This work is supported by the National Natural Science Foundation of China, Grant No.11327303 and Grant No.11473028; Key Research Program of Frontier Sciences, CAS, Grant NO. QYZDY-SSW-SLH008; the International Partnership Program of Chinese Academy of Sciences, Grant No. 113111KYSB20160053.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20171403518578
Title:Measuring dispersed spot of positioning CMOS camera from star image quantitative interpretation based on a bivariate-error least squares curve fitting algorithm
Authors:Bu, Fan (1); Qiu, Yuehong (1); Yao, Dalei (1); Yan, Xingtao (1)
Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics. CAS, Shaanxi Xi'an; 710119, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10250
Part number:1 of 1
Issue title:International Conference on Optical and Photonics Engineering, icOPEN 2016
Issue date:2017
Publication year:2017
Article number:102500T
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510610019
Document type:Conference article (CA)
Conference name:International Conference on Optical and Photonics Engineering, icOPEN 2016
Conference date:September 26, 2016 - September 30, 2016
Conference location:Chengdu, China
Conference code:126841
Sponsor:International Association of Computer Science and Information Technology; Sichuan Institute of Electronics
Publisher:SPIE
Abstract:For a positioning CMOS camera, we put forward a system which can measure quantitatively dispersed spot parameters and the degree of energy concentration of certain optical system. Based on this method, the detection capability of the positioning CMOS camera can be verified. The measuring method contains some key instruments, such as 550mm collimator, 0.2mm star point, turntable and a positioning CMOS camera. Firstly, the definition of dispersed spot parameters is introduced. Then, the steps of measuring dispersed spot parameters are listed. The energy center of dispersed spot is calculated using centroid algorithm, and then a bivariate-error least squares curve Gaussian fitting method is presented to fit dispersion spot energy distribution curve. Finally, the connected region shaped by the energy contour of the defocused spots is analyzed. The diameter equal to the area which is 80% of the total energy of defocused spots and the energy percentage to the 3×3 central area of the image size are both calculated. The experimental results show that 80% of the total energy of defocused spots is concentrated in the diameter of the inner circle of 15μm, and the percentage to the 3×3 pixels central area can achieve 80% and even higher. Therefore, the method meets the needs of the optical systems in positioning CMOS camera for the imaging quality control. 2017 COPYRIGHT SPIE.
Number of references:10
Main heading:Least squares approximations
Controlled terms:Cameras - CMOS integrated circuits - Curve fitting - Errors - Optical systems - Photonics - Stars
Uncontrolled terms:Bivariate - CMOS camera - Dispersed spot - Energy concentration - Least squares curve fittings
Classification code:657.2 Extraterrestrial Physics and Stellar Phenomena - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 921.6 Numerical Methods
Numerical data indexing:Percentage 8.00e+01%, Size 1.50e-05m, Size 2.00e-04m, Size 5.50e-01m
DOI:10.1117/12.2266810

Database:Compendex
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Accession number:20174304293745
Title:Thermal Stress and Smile of Conduction-cooled High Power Semiconductor Laser Arrays
Authors:Lu, Yao (1, 2); Nie, Zhi-Qiang (1); Chen, Tian-Qi (1, 2); Zhang, Pu (1); Xiong, Ling-Ling (1); Wu, Di-Hai (1, 2); Li, Xiao-Ning (3); Wang, Zhen-Fu (1); Liu, Xing-Sheng (1, 3)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Focuslight Technologies Inc., Xi'an; 710077, China
Corresponding author:Nie, Zhi-Qiang(niezq@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:46
Issue:9
Issue date:September 1, 2017
Publication year:2017
Article number:0914001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Finite element analysis model of the conduction-cooled package high power semiconductor lasers were established respectively to analyze normal stress, shear stress and displacement in reflowing process and operating process independently. With the help of analytical solution model, the cause and the distribution of thermal stress and smile were analyzed. The results show that shear stress is the origin of other thermo-mechanical behavior in reflowing process due to coefficient thermal expansion mismatch, while both coefficient thermal expansion mismatch and temperature gradient affect the thermal stress and displacement in operating process. In order to obtain the accurate result, the residual stress and displacement of reflowing process were considered as the initial condition in operating finite element analysis simulation, and the thermal stress and smile were simulated. The influence of heat sink temperature on smile was studied with finite element analysis and experiment. The result shows operating process has great impact on smile and results in worse smile, and with the rising of temperature of heat sink, smile also becomes larger. 2017, Science Press. All right reserved.
Number of references:23
Main heading:Finite element method
Controlled terms:Heat sinks - High power lasers - Lasers - Semiconductor lasers - Shear stress - Temperature - Thermal expansion - Thermal stress
Uncontrolled terms:Finite element analysis model - Heat sink temperature - High power semiconductor laser - Initial conditions - Operating process - Stress and displacements - Thermal expansion mismatch - Thermo-mechanical behaviors
Classification code:616.1 Heat Exchange Equipment and Components - 641.1 Thermodynamics - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 921.6 Numerical Methods - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3788/gzxb20174609.0914001
Funding details: Number: 61306096, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61334010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61404172, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (Nos. 61334010, 61306096, 61404172, 61504167).

Database:Compendex
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Accession number:20180104605344
Title:Demonstration of on-chip multi-mode phase-sensitive amplification
Authors:Zhang, Y. (1); Reimer, C. (1); Wu, J. (1); Roztocki, P. (1); Wetzel, B. (1); Little, Brent E. (2); Chu, S.T. (3); Moss, D.J. (4); Kues, M. (1); Morandotti, R. (1, 5)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Science, Xi'an, China; (3) City University of Hong Kong, Department of Physics and Material Science, Tat Chee Avenue, Hong Kong, China; (4) Center for Micro-Photonics, Swinburne University of Technology, Hawthorne; VIC; 3122, Australia; (5) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Zhang, Y.(yanbing.zhang@emt.inrs.ca)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F81-EQEC 2017
Part number:1 of 1
Issue title:European Quantum Electronics Conference, EQEC 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:European Quantum Electronics Conference, EQEC 2017
Conference date:June 25, 2017 - June 29, 2017
Conference location:Munich, Germany
Conference code:138998
Publisher:OSA - The Optical Society
Number of references:9
Page count:1

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<274>

Accession number:20170803365225
Title:Hyperspectral Image Superresolution by Transfer Learning
Authors:Yuan, Yuan (1); Zheng, Xiangtao (1); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China
Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)
Source title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Abbreviated source title:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.
Volume:10
Issue:5
Issue date:May 2017
Publication year:2017
Pages:1963-1974
Article number:7855724
Language:English
ISSN:19391404
E-ISSN:21511535
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers
Abstract:Hyperspectral image superresolution is a highly attractive topic in computer vision and has attracted many researchers' attention. However, nearly all the existing methods assume that multiple observations of the same scene are required with the observed low-resolution hyperspectral image. This limits the application of superresolution. In this paper, we propose a new framework to enhance the resolution of hyperspectral images by exploiting the knowledge from natural images: The relationship between low/high-resolution images is the same as that between low/high-resolution hyperspectral images. In the proposed framework, the mapping between low- A nd high-resolution images can be learned by deep convolutional neural network and be transferred to hyperspectral image by borrowing the idea of transfer learning. In addition, to study the spectral characteristic between low- A nd high-resolution hyperspectral image, collaborative nonnegative matrix factorization (CNMF) is proposed to enforce collaborations between the low- A nd high-resolution hyperspectral images, which encourages the estimated solution to extract the same endmembers with low-resolution hyperspectral image. The experimental results on ground based and remote sensing data suggest that the proposed method achieves comparable performance without requiring any auxiliary images of the same scene. 2016 IEEE.
Number of references:58
Main heading:Image enhancement
Controlled terms:Convolution - Deep neural networks - Factorization - Independent component analysis - Matrix algebra - Neural networks - Optical resolving power - Remote sensing - Spectroscopy
Uncontrolled terms:Convolutional Neural Networks (CNN) - Deep convolutional neural networks - High resolution image - Image super-resolution - Nonnegative matrix factorization - Remote sensing data - Spectral characteristics - Super resolution
Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 921 Mathematics - 921.1 Algebra
DOI:10.1109/JSTARS.2017.2655112

Database:Compendex
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Accession number:20171103443058
Title:Preparation and optical properties of TeO2–BaO–ZnO–ZnF2 fluoro-tellurite glass for mid-infrared fiber Raman laser applications
Authors:Li, Jie (1); Xiao, Xusheng (2); Gu, Shaoxuan (1); Xu, Yantao (2); Zhou, Zhiguang (2); Guo, Haitao (2)
Author affiliation:(1) State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology), Wuhan; Hubei; 430070, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an; Shaanxi; 710119, China
Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)
Source title:Optical Materials
Abbreviated source title:Opt Mater
Volume:66
Issue date:April 1, 2017
Publication year:2017
Pages:567-572
Language:English
ISSN:09253467
CODEN:OMATET
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:A serial of novel fluoro-tellurite glasses with compositions of 60TeO2–20BaO–(20-x)ZnO–xZnF2 (x = 0, 2, 4, 5 and 6 mol%) were prepared. The compositional dependences of glass structural evaluation, Raman gain coefficient, UV–Vis transmission spectrum, IR transmission spectrum, linear refractive index and third-order nonlinearity were analyzed. The results showed that the addition of 6 mol% ZnF2 can further improve the Raman gain coefficient to as well as 52 × 10?11 cm/W and effectively decrease around 73% and 57% absorption coefficients respectively caused by free O[sbnd]H groups (@3.3 μm) and hydrogen-bonded O[sbnd]H groups (@4.5 μm) in glass. Addition of ZnF2 does not change the UV–Vis absorption edge, optical band gap energy and infrared region cut-off edge almost, while the linear refraction index and ultrafast third-nonlinearity show unmonotonic changes. These novel fluoro-tellurite glasses may be suitable candidates for using in mid-infrared Raman fiber laser and/or amplifier. 2017 Elsevier B.V.
Number of references:38
Main heading:Fluorine compounds
Controlled terms:Barium compounds - Energy gap - Fiber amplifiers - Fiber lasers - Glass - Hydrogen bonds - II-VI semiconductors - Infrared devices - Laser applications - Refractive index - Tellurium compounds - Zinc oxide
Uncontrolled terms:Compositional dependence - Fluoride - IR transmission spectra - Optical band gap energy - Properties - Raman gain coefficients - Tellurite glass - Third-order non-linearity
Classification code:741.1 Light/Optics - 744.4 Solid State Lasers - 744.9 Laser Applications - 801.4 Physical Chemistry - 804.2 Inorganic Compounds - 812.3 Glass
Numerical data indexing:Percentage 5.70e+01%, Percentage 7.30e+01%
DOI:10.1016/j.optmat.2017.03.006
Funding details: Number: SYSJJ2016-04, Acronym: -, Sponsor: Wuhan University of Technology;Number: -, Acronym: -, Sponsor: Key State Laboratory of Superhard Materials;Number: 2016YFB0303804, Acronym: -, Sponsor: -;Number: 61405240, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:This work was financially supported by the National Natural Science Foundation of China (No. 61405240 and 61475189) and the Natural Key Research and Development Program of China (No. 2016YFB0303804). The work was also funded by the State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology) (SYSJJ2016-04).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<276>

Accession number:20172703887483
Title:Learning multilayer channel features for pedestrian detection (Open Access)
Authors:Cao, Jiale (1); Pang, Yanwei (1); Li, Xuelong (2)
Author affiliation:(1) School of Electrical and Information Engineering, Tianjin University, Tianjin; 300072, China; (2) Center for OPTical IMagery Analysis and Learning(OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Pang, Yanwei(pyw@tju.edu.cn)
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:7
Issue date:July 2017
Publication year:2017
Pages:3210-3220
Article number:7912366
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Pedestrian detection based on the combination of convolutional neural network (CNN) and traditional handcrafted features (i.e., HOG+LUV) has achieved great success. In general, HOG+LUV are used to generate the candidate proposals and then CNN classifies these proposals. Despite its success, there is still room for improvement. For example, CNN classifies these proposals by the fully connected layer features, while proposal scores and the features in the inner-layers of CNN are ignored. In this paper, we propose a unifying framework called multilayer channel features (MCF) to overcome the drawback. It first integrates HOG+LUV with each layer of CNN into a multi-layer image channels. Based on the multi-layer image channels, a multistage cascade AdaBoost is then learned. The weak classifiers in each stage of the multi-stage cascade are learned from the image channels of corresponding layer. Experiments on Caltech data set, INRIA data set, ETH data set, TUD-Brussels data set, and KITTI data set are conducted. With more abundant features, an MCF achieves the state of the art on Caltech pedestrian data set (i.e., 10.40% miss rate). Using new and accurate annotations, an MCF achieves 7.98% miss rate. As many non-pedestrian detection windows can be quickly rejected by the first few stages, it accelerates detection speed by 1.43 times. By eliminating the highly overlapped detection windows with lower scores after the first stage, it is 4.07 times faster than negligible performance loss. 2016 IEEE.
Number of references:60
Main heading:Feature extraction
Controlled terms:Adaptive boosting - Classification (of information) - Multilayers - Neural networks
Uncontrolled terms:Caltech pedestrian data sets - Convolutional Neural Networks (CNN) - Detection windows - Fully-connected layers - HOG+LUV - Multilayer channels - Pedestrian detection - State of the art
Classification code:716.1 Information Theory and Signal Processing - 723 Computer Software, Data Handling and Applications
Numerical data indexing:Percentage 1.04e+01%, Percentage 7.98e+00%
DOI:10.1109/TIP.2017.2694224
Funding details: Number: QYXB201501, Acronym: -, Sponsor: -;Number: 2014CB340400, Acronym: -, Sponsor: -;Number: 61632081, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61632081, in part by the National Basic Research Program of China 973 Program under Grant 2014CB340400, and in part by the Research Fund of Hainan Tropical Ocean University Grant QYXB201501.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<277>

Accession number:20180204633874
Title:Design of low noise imaging system
Authors:Hu, Bo (1, 2); Chen, Xiaolai (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10459
Part number:1 of 1
Issue title:AOPC 2017: Optical Storage and Display Technology
Issue date:2017
Publication year:2017
Article number:104590Z
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510613997
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Storage and Display Technology, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:132930
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:In order to meet the needs of engineering applications for low noise imaging system under the mode of global shutter, a complete imaging system is designed based on the SCMOS (Scientific CMOS) image sensor CIS2521F. The paper introduces hardware circuit and software system design. Based on the analysis of key indexes and technologies about the imaging system, the paper makes chips selection and decides SCMOS + FPGA+ DDRII+ Camera Link as processing architecture. Then it introduces the entire system workflow and power supply and distribution unit design. As for the software system, which consists of the SCMOS control module, image acquisition module, data cache control module and transmission control module, the paper designs in Verilog language and drives it to work properly based on Xilinx FPGA. The imaging experimental results show that the imaging system exhibits a 2560?2160 pixel resolution, has a maximum frame frequency of 50 fps. The imaging quality of the system satisfies the requirement of the index. 2017 COPYRIGHT SPIE.
Number of references:3
Main heading:Computer architecture
Controlled terms:Cameras - Computer hardware description languages - Computer software - Digital storage - Display devices - Electric conductance - Field programmable gate arrays (FPGA) - Image resolution - Imaging systems - Integrated circuit design
Uncontrolled terms:Camera links - DDRII - Engineering applications - Power supply and distribution - Processing architectures - SCMOS - Software system designs - Transmission control
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits - 721.2 Logic Elements - 722.1 Data Storage, Equipment and Techniques - 722.2 Computer Peripheral Equipment - 723 Computer Software, Data Handling and Applications - 723.1.1 Computer Programming Languages - 742.2 Photographic Equipment - 746 Imaging Techniques
DOI:10.1117/12.2285716

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<278>

Accession number:20181304944640
Title:Novel long-period fiber gratings: Fabrication and sensing applications
Authors:Ren, Liyong (1); Ren, Kaili (1, 2); Kong, Xudong (1); Liang, Jian (1); Ju, Haijuan (1); Wu, Zhaoxin (2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Xi'an Jiaotong University, Xi'an; 710049, China
Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.
Volume:2017-January
Part number:1 of 1
Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Issue date:October 25, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781943580279
Document type:Conference article (CA)
Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:131854
Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We presented two novel schemes for fabricating micro-tapered long-period fiber gratings (LPFGs) and helical LPFGs, respectively, by periodically tapering and by directly twisting single mode fibers. Superior sensing characteristics of them are also demonstrated experimentally. 2017 IEEE.
Number of references:6
Main heading:Diffraction gratings
Controlled terms:Fabrication - Single mode fibers
Uncontrolled terms:Long period fiber grating - Sensing applications - Sensing characteristics
Classification code:741.1.2 Fiber Optics - 741.3 Optical Devices and Systems
DOI:10.1364/CLEO_SI.2017.AW4B.6

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<279>

Accession number:20173904217981
Title:Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source (Open Access)
Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Nguyen, Thach G. (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5, 6, 7); Mitchell, Arnan (2); Moss, David J. (1)
Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) ARC Centre of Excellence for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), School of Engineering, RMIT University, Melbourne; VIC; 3001, Australia; (3) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (5) INSR-énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (6) National Research University of Information Technologies, Mechanics and Optics, St.-Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Corresponding author:Moss, David J.(dmoss@swin.edu.au)
Source title:APL Photonics
Abbreviated source title:APL Photonics
Volume:2
Issue:9
Issue date:September 1, 2017
Publication year:2017
Article number:096104
Language:English
E-ISSN:23780967
Document type:Journal article (JA)
Publisher:AIP Publishing
Abstract:We propose and experimentally demonstrate a microwave photonic intensity differentiator based on a Kerr optical comb generated by a compact integrated micro-ring resonator (MRR). The on-chip Kerr optical comb, containing a large number of comb lines, serves as a high-performance multi-wavelength source for implementing a transversal filter, which will greatly reduce the cost, size, and complexity of the system. Moreover, owing to the compactness of the integrated MRR, frequency spacings of up to 200-GHz can be achieved, enabling a potential operation bandwidth of over 100 GHz. By programming and shaping individual comb lines according to calculated tap weights, a reconfigurable intensity differentiator with variable differentiation orders can be realized. The operation principle is theoretically analyzed, and experimental demonstrations of the first-, second-, and third-order differentiation functions based on this principle are presented. The radio frequency amplitude and phase responses of multi-order intensity differentiations are characterized, and system demonstrations of real-time differentiations for a Gaussian input signal are also performed. The experimental results show good agreement with theory, confirming the effectiveness of our approach. 2017 Author(s).
Number of references:43
Main heading:Microwave resonators
Controlled terms:Optical resonators
Uncontrolled terms:Experimental demonstrations - Frequency spacing - Microring Resonator (MRR) - Microwave Photonics - Multi-wavelength source - Operation bandwidth - Optical frequency comb sources - Radio frequencies
Classification code:714 Electronic Components and Tubes - 741.3 Optical Devices and Systems
Numerical data indexing:Frequency 1.00e+11Hz, Frequency 2.00e+11Hz
DOI:10.1063/1.4989871
Funding text:This work was supported by the Australian Research Council Discovery Projects Program (No. DP150104327). R.M. acknowledges support by the Natural Sciences and Engineering Research Council of Canada (NSERC) through the Strategic, Discovery and Acceleration Grants Schemes, by the MESI PSR-SIIRI Initiative in Quebec, and by the Canada Research Chair Program. He also acknowledges additional support by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program (Grant No. 074-U 01) and by the 1000 Talents Sichuan Program in China. B.E.L. was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences, Grant No. XDB24030000.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<280>

Accession number:20182205251253
Title:The application of BI-RADS feature in the ultrasound breast tumor CAD system
Authors:Zhang, Fan (1); Huang, Qinghua (1); Li, Xuelong (2)
Author affiliation:(1) School of Electronic and Information Engineering, South China University of Technology, Guangzhou; 510641, China; (2) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China
Corresponding author:Huang, Qinghua(qhhuang@scut.edu.cn)
Source title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., BioMed. Eng. Inf., CISP-BMEI
Volume:2018-January
Part number:1 of 1
Issue title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Issue date:July 2, 2017
Publication year:2017
Pages:1-5
Language:English
ISBN-13:9781538619377
Document type:Conference article (CA)
Conference name:10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Conference date:October 14, 2017 - October 16, 2017
Conference location:Shanghai, China
Conference code:135071
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The breast cancer is one of the most common diseases in women. This paper proposed a breast tumor computer aided diagnosis (CAD) system utilized the Breast Imaging Reporting and Data System (BI-RADS) features. The BI-RADS feature scoring scheme is designed to transform the BI-RADS report to a vector. And the decision tree algorithm is adopted to classify the vector. Compared with previous CAD system, the proposed system is easier to be understood by the clinician. Without the image preprocessing, the proposed system can be applied in different ultrasound machines. There are 440 samples collected from the Cancer Center of Sun Yat-sen University. In the experiment, the five-fold cross validation is employed to evaluate the proposed system. The result shows that the performance of the proposed system is better than the CAD method which takes the BI-RADS feature as a guide to extract features from images. The average accuracy achieves 89.38%, specificity is 90.74%, sensitivity is 86.18%, positive predictive value (PPV) reaches 93.57% and negative predictive value (NVP) is 79.82%. 2017 IEEE.
Number of references:20
Main heading:Computer aided diagnosis
Controlled terms:Biomedical engineering - Data mining - Decision trees - Diseases - Image processing - Medical imaging - Trees (mathematics) - Tumors - Ultrasonics
Uncontrolled terms:BI-RADS - Breast imaging reporting and data systems - CAD system - Computer Aided Diagnosis(CAD) - Decision-tree algorithm - Image preprocessing - Negative predictive value - Positive predictive values
Classification code:461.1 Biomedical Engineering - 461.2 Biological Materials and Tissue Engineering - 723.2 Data Processing and Image Processing - 753.1 Ultrasonic Waves - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
Numerical data indexing:Percentage 7.98e+01%, Percentage 8.62e+01%, Percentage 8.94e+01%, Percentage 9.07e+01%, Percentage 9.36e+01%
DOI:10.1109/CISP-BMEI.2017.8302276
Funding details: Number: 201605030011, Acronym: -, Sponsor: -;Number: 2014A050503020, Acronym: -, Sponsor: -;Number: 61571193, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:ACKNOWLEDGMENT This work was partially supported by National Natural Science Foundation of China (Nos. 61372007 and 61571193), Guangzhou Key Lab of Body Data Science (no.201605030011), and Guangdong Provincial Science and Technology Program - International Collaborative Projects (No. 2014A050503020).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<281>

Accession number:20181304938231
Title:Visibility enhancement of hazy images using polarimetric dehazing method based on stokes parameters
Authors:Liang, Jian (1, 2); Zhang, Wenfei (1, 2); Ren, Liyong (1); Ju, Haijuan (1, 2); Bai, Zhaofeng (1); Qu, Enshi (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Abbreviated source title:Conf. Lasers. Electr.-Opt., Proc.
Volume:2017-January
Part number:1 of 1
Issue title:2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings
Issue date:October 25, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781943580279
Document type:Conference article (CA)
Conference name:2017 Conference on Lasers and Electro-Optics, CLEO 2017
Conference date:May 14, 2017 - May 19, 2017
Conference location:San Jose, CA, United states
Conference code:131854
Sponsor:AdValue Photonics; American Elements - The Materials Science Company; Coherent; et al.; KMLabs - Leading in Ultrafast; MKS
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Polarimetric dehazing methods are proven very effective in enhancing the contrast and visibility of images captured in hazy weather. In this paper, we analyze the capability of visibility enhancement in experiments. 2017 IEEE.
Number of references:6
Main heading:Image enhancement
Controlled terms:Demulsification - Polarimeters - Visibility
Uncontrolled terms:Dehazing - Stokes parameters
Classification code:741.2 Vision - 802.3 Chemical Operations - 941.3 Optical Instruments
DOI:10.1364/CLEO_SI.2017.AM4B.5

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<282>

Accession number:20175104549160
Title:FFGS: Feature fusion with gating structure for image caption generation
Authors:Yuan, Aihong (1, 2); Li, Xuelong (1); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100049, China
Corresponding author:Lu, Xiaoqiang(luxq666666@gmail.com)
Source title:Communications in Computer and Information Science
Abbreviated source title:Commun. Comput. Info. Sci.
Volume:771
Part number:1 of 3
Issue title:Computer Vision - 2nd CCF Chinese Conference, CCCV 2017, Proceedings
Issue date:2017
Publication year:2017
Pages:638-649
Language:English
ISSN:18650929
ISBN-13:9789811072987
Document type:Conference article (CA)
Conference name:2nd Chinese Conference on Computer Vision, CCCV 2017
Conference date:October 11, 2017 - October 14, 2017
Conference location:Tianjin, China
Conference code:208009
Publisher:Springer Verlag
Abstract:Automatically generating a natural language to describe the content of the given image is a challenging task in the interdisciplinary between computer vision and natural language processing. The task is challenging because computers not only need to recognize objects, their attributions and relationships between them in an image, but also these elements should be represented into a natural language sentence. This paper proposed a feature fusion with gating structure for image caption generation. First, the pre-trained VGG-19 is used as the image feature extractor. We use the FC-7 and CONV5-4 layer’s outputs as the global and local image feature, respectively. Second, the image features and the corresponding sentence are imported into LSTM to learn their relationship. The global image feature is gated at each time-step before imported into LSTM while the local image feature used the attention model. Experimental results show our method outperform the state-of-the-art methods. Springer Nature Singapore Pte Ltd. 2017.
Number of references:22
Main heading:Long short-term memory
Controlled terms:Computer vision - Image fusion - Natural language processing systems - Recurrent neural networks
Uncontrolled terms:Attention model - Convolutional neural network - Feature fusion - Image caption - Local image features - Multi-modal - Natural languages - State-of-the-art methods
Classification code:723.2 Data Processing and Image Processing - 723.5 Computer Applications
DOI:10.1007/978-981-10-7299-4_53

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<283>

Accession number:20182205249318
Title:Robust control of boost converter
Authors:Qi, Lijie (1, 2); Xiao, Maosen (1)
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) University of Chinese Academy of Sciences, Beijing, China
Corresponding author:Qi, Lijie(qisir123@163.com)
Source title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Abbreviated source title:Proc. - Int. Conf. Cybern., Robot. Control, CRC
Volume:2018-January
Part number:1 of 1
Issue title:Proceedings - 2017 2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Issue date:July 2, 2017
Publication year:2017
Pages:61-65
Language:English
ISBN-13:9781538606773
Document type:Conference article (CA)
Conference name:2nd International Conference on Cybernetics, Robotics and Control, CRC 2017
Conference date:July 21, 2017 - July 23, 2017
Conference location:Chengdu, Sichuan, China
Conference code:135561
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In recent years, high-performance DC-DC converter is a key research direction in the fields of power design. This paper takes the Boost-converter as an example to construct the mathematical model. Besides, it also applies several control strategies which includes PID control based on genetic algorithm, sliding mode control algorithm and so on to the design of DC-DC converter. Finally, we analyzed the simulation results. 2017 IEEE.
Number of references:10
Main heading:DC-DC converters
Controlled terms:Cybernetics - Electric inverters - Genetic algorithms - Robotics - Robust control - Sliding mode control - Three term control systems
Uncontrolled terms:BOOST converter - component - Control strategies - Power design - simulation
Classification code:704.1 Electric Components - 731 Automatic Control Principles and Applications
DOI:10.1109/CRC.2017.17

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<284>

Accession number:20173604120668
Title:Transmission performance of 90°-bend optical waveguides fabricated in fused silica by femtosecond laser inscription
Authors:Lv, Jing (1, 2); Bai, Jing (2); Zhou, Kaiming (2, 3); Mei, Xuesong (1); Wang, Kedian (1); Li, Ming (1, 2); Cheng, Guanghua (2)
Author affiliation:(1) State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Shaanxi Key Laboratory of Intelligent Robots, Xi’an Jiaotong University, Xi’an; 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (3) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom
Corresponding author:Cheng, Guanghua(gcheng@opt.ac.cn)
Source title:Optics Letters
Abbreviated source title:Opt. Lett.
Volume:42
Issue:17
Issue date:September 1, 2017
Publication year:2017
Pages:3470-3473
Language:English
ISSN:01469592
E-ISSN:15394794
CODEN:OPLEDP
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:The L-shape waveguide was written in fused silica using a femtosecond laser with beam shaping. The guiding structure supports good light turning; 0.88 dB/turn was achieved at the silica-air interface. By using the finite-different time-domain method, the turn loss due to the turning structure and refractive index of the L-shape waveguide has been simulated. The results show that the proposed method has unprecedented flexibility in fabricating a 90°-bend waveguide. 2017 Optical Society of America.
Number of references:16
Main heading:Fused silica
Controlled terms:Fabrication - Femtosecond lasers - Refractive index - Time domain analysis - Waveguides
Uncontrolled terms:Air interface - Beam-shaping - Bend waveguide - Femtosecond laser inscriptions - Finite different time domain method - Guiding structures - Light turning - Transmission performance
Classification code:714.3 Waveguides - 741.1 Light/Optics - 812.3 Glass - 921 Mathematics
DOI:10.1364/OL.42.003470
Funding details: Number: IRT_15R54, Acronym: -, Sponsor: -;Number: 2016YFB1102501, Acronym: -, Sponsor: -;Number: 61378019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 51375374, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Funding. National Natural Science Foundation of China (NSFC) (51375374, 61378019); Program for Chang Jiang Scholars and the Innovative Research Team in University (IRT_15R54); National Key Research and Development Program (2016YFB1102501).

Database:Compendex
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<285>

Accession number:20174204273453
Title:Interleaved segment correction achieves higher improvement factors in using genetic algorithm to optimize light focusing through scattering media
Authors:Li, Runze (1, 2, 3); Peng, Tong (1, 3); Liang, Yansheng (1, 3); Yang, Yanlong (1); Yao, Baoli (1); Yu, Xianghua (1); Min, Junwei (1); Lei, Ming (1); Yan, Shaohui (1); Zhang, Chunmin (2); Ye, Tong (4)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Science, Xi'An Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Department of Bioengineering, Clemson University, Clemson-MUSC Bioengineering Program, Charleston; SC; 29425, United States
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Journal of Optics (United Kingdom)
Abbreviated source title:J. Opt.
Volume:19
Issue:10
Issue date:September 13, 2017
Publication year:2017
Article number:105602
Language:English
ISSN:20408978
E-ISSN:20408986
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:Focusing and imaging through scattering media has been proved possible with high resolution wavefront shaping. A completely scrambled scattering field can be corrected by applying a correction phase mask on a phase only spatial light modulator (SLM) and thereby the focusing quality can be improved. The correction phase is often found by global searching algorithms, among which Genetic Algorithm (GA) stands out for its parallel optimization process and high performance in noisy environment. However, the convergence of GA slows down gradually with the progression of optimization, causing the improvement factor of optimization to reach a plateau eventually. In this report, we propose an interleaved segment correction (ISC) method that can significantly boost the improvement factor with the same number of iterations comparing with the conventional all segment correction method. In the ISC method, all the phase segments are divided into a number of interleaved groups; GA optimization procedures are performed individually and sequentially among each group of segments. The final correction phase mask is formed by applying correction phases of all interleaved groups together on the SLM. The ISC method has been proved significantly useful in practice because of its ability to achieve better improvement factors when noise is present in the system. We have also demonstrated that the imaging quality is improved as better correction phases are found and applied on the SLM. Additionally, the ISC method lowers the demand of dynamic ranges of detection devices. The proposed method holds potential in applications, such as high-resolution imaging in deep tissue. 2017 IOP Publishing Ltd.
Number of references:27
Main heading:Genetic algorithms
Controlled terms:Focusing - Imaging systems - Light modulation - Light modulators - Scattering - Wavefronts
Uncontrolled terms:High-resolution imaging - Improvement factors - Memory effects - Number of iterations - Parallel optimization - Spatial light modulators - Turbid media - Wave front control
Classification code:741.1 Light/Optics - 746 Imaging Techniques
DOI:10.1088/2040-8986/aa84dc
Funding details: Number: 2012CB921900, Acronym: -, Sponsor: -;Number: 1539034, Acronym: NSF, Sponsor: National Science Foundation;Number: P20GM-103499, Acronym: NIGMS, Sponsor: National Institute of General Medical Sciences;Number: R21GM-104683, Acronym: NIGMS, Sponsor: National Institute of General Medical Sciences;Number: 61377008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275193, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This research is supported by the National Basic Research Program (973 Program) of China under grant No. 2012CB921900 and the Natural Science Foundation of China under the grant No. 81427802, 61275193 and 61377008. TY is grateful for the supports from National Institute of General Medical Sciences (R21GM-104683 and P20GM-103499) and a grant from the National Science Foundation (1539034).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<286>

Accession number:20172203708621
Title:Reweighted Infrared Patch-Tensor Model with Both Nonlocal and Local Priors for Single-Frame Small Target Detection
Authors:Dai, Yimian (1); Wu, Yiquan (1, 2)
Author affiliation:(1) College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing; 211106, China; (2) Key Laboratory of Spectral Imaging Technology CAS, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710000, China
Corresponding author:Wu, Yiquan(nuaaimagestrong@163.com)
Source title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Abbreviated source title:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.
Volume:10
Issue:8
Issue date:August 2017
Publication year:2017
Pages:3752-3767
Article number:7932858
Language:English
ISSN:19391404
E-ISSN:21511535
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers
Abstract:Many state-of-the-art methods have been proposed for infrared small target detection. They work well on the images with homogeneous backgrounds and high-contrast targets. However, when facing highly heterogeneous backgrounds, they would not perform very well, mainly due to: 1) the existence of strong edges and other interfering components, 2) not utilizing the priors fully. Inspired by this, we propose a novel method to exploit both local and nonlocal priors simultaneously. First, we employ a new infrared patch-tensor (IPT) model to represent the image and preserve its spatial correlations. Exploiting the target sparse prior and background nonlocal self-correlation prior, the target-background separation is modeled as a robust low-rank tensor recovery problem. Moreover, with the help of the structure tensor and reweighted idea, we design an entrywise local-structure-adaptive and sparsity enhancing weight to replace the globally constant weighting parameter. The decomposition could be achieved via the elementwise reweighted higher order robust principal component analysis with an additional convergence condition according to the practical situation of target detection. Extensive experiments demonstrate that our model outperforms the other state-of-the-arts, in particular for the images with very dim targets and heavy clutters. 2008-2012 IEEE.
Number of references:52
Main heading:Principal component analysis
Controlled terms:Tensors
Uncontrolled terms:Infrared small targets - Local structure - Robust principal component analysis - Self correlation - Tensor model
Classification code:921.1 Algebra - 922.2 Mathematical Statistics
DOI:10.1109/JSTARS.2017.2700023
Funding details: Number: LSIT201401, Acronym: -, Sponsor: Chinese Academy of Sciences;Number: 61573183, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Natural Science Foundation of China under Grant 61573183, and in part by Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences under Grant LSIT201401.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<287>

Accession number:20174304308520
Title:JM-Net and cluster-SVM for aerial scene classification
Authors:Lu, Xiaoqiang (1); Yuan, Yuan (1); Fang, Jie (1, 2)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning (OPTIMAL), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China; (2) University of the Chinese Academy of Sciences, 19A Yuquanlu, Beijing; 100047, China
Source title:IJCAI International Joint Conference on Artificial Intelligence
Abbreviated source title:IJCAI Int. Joint Conf. Artif. Intell.
Volume:0
Part number:1 of 1
Issue title:26th International Joint Conference on Artificial Intelligence, IJCAI 2017
Issue date:2017
Publication year:2017
Pages:2386-2392
Language:English
ISSN:10450823
ISBN-13:9780999241103
Document type:Conference article (CA)
Conference name:26th International Joint Conference on Artificial Intelligence, IJCAI 2017
Conference date:August 19, 2017 - August 25, 2017
Conference location:Melbourne, VIC, Australia
Conference code:130864
Sponsor:Alibaba Group; Artificial Intelligence Journal; et al.; Melbourne Convention Bureau; Victoria Government; Xiaoi
Publisher:International Joint Conferences on Artificial Intelligence
Abstract:Aerial scene classification, which is a fundamental problem for remote sensing imagery, can automatically label an aerial image with a specific semantic category. Although deep learning has achieved competitive performance for aerial scene classification, training the conventional neural networks with aerial datasets will easily stick in overfitting. Because the aerial datasets only contain a few hundreds or thousands images, meanwhile the conventional networks usually contain millions of parameters to be trained. To address the problem, a novel convolutional neural network named Justify Mentioned Net (JM-Net) is proposed in this paper, which has different size of convolution kernels in same layer and ignores the fully convolution layer, so it has fewer parameters and can be trained well on aerial datasets. Additionally, Cluster-SVM, a strategy to improve the accuracy and speed up the classification is used in the specific task. Finally, our method surpass the state-of-art result on the challenging AID dataset while cost shorter time and used smaller storage space.

Number of references:19
Main heading:Antennas
Controlled terms:Classification (of information) - Convolution - Deep learning - Neural networks - Remote sensing - Semantics
Uncontrolled terms:Competitive performance - Convolution kernel - Convolutional neural network - Different sizes - Remote sensing imagery - Scene classification - Specific semantics - Specific tasks
Classification code:716.1 Information Theory and Signal Processing

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<288>

Accession number:20170903384132
Title:Refractive index and temperature sensitivity characterization of excessively tilted fiber grating
Authors:Yan, Z. (1, 2, 3); Sun, Q. (1); Wang, C. (2); Sun, Z. (2); Mou, C. (2, 3); Zhou, K. (2, 4); Liu, D. (1); Zhang, L. (2)
Author affiliation:(1) School of Optical and Electronic Information, National Engineering Laboratory for Next Generation Internet Access System, Huazhong University of Science and Technology, Wuhan, Hubei; 430074, China; (2) Aston Institute of Photonic Technologies, Aston University, Birmingham; B4 7ET, United Kingdom; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (4) Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai; 200072, China
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:4
Issue date:February 20, 2017
Publication year:2017
Pages:3336-3346
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:We have investigated experimentally and numerically the temperature and refractive index (RI) sensitivity characteristics of excessively tilted fiber gratings (Ex-TFGs) in detail. Both results have shown that the temperature and RI sensitivities of Ex-TFGs are mode order dependent. For temperature sensitivity, the higher order cladding mode of Ex- TFG exhibited lower temperature sensitivity, quantitatively, the temperature sensitivities of TM cladding modes at the resonance wavelength around 1550nm are 9pm/°C, 6.8pm/°C, 5.6pm/°C and, 4pm/°C for cladding mode 28th, 31st, 35th, 40th, respectively, indicating the overall temperature sensitivity of Ex-TFGs were lower than that of normal FBGs. The SRI sensing results have shown that the RI sensitivity of Ex-TFG at the special index value could be improved by choosing the cladding mode with effective index close to the refractive index of the detecting medium. The SRI sensitivities at the effective mode index were 2250nm/RIU at 1.408, 864nm/RIU at 1.395, 1536nm/RIU at 1.380 and 1360nm/RIU at 1.355, for the cladding mode of 28th, 31st, 35th, 43rd, respectively. The experimental results have also shown the SRI sensitivity of Ex-TFG was increasing with increasing of the resonance wavelength. 2017 Optical Society of America.
Number of references:34
Main heading:Refractive index
Controlled terms:Cladding (coating)
Uncontrolled terms:Cladding modes - Effective index - Index values - Lower temperature sensitivities - Resonance wavelengths - Sensitivity characteristics - Temperature sensitivity - Tilted fiber gratings
Classification code:741.1 Light/Optics
Numerical data indexing:Size 1.55e-06m
DOI:10.1364/OE.25.003336

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<289>

Accession number:20173704163011
Title:Overlapping community detection for multimedia social networks
Authors:Huang, Faliang (1); Li, Xuelong (2); Zhang, Shichao (3); Zhang, Jilian (4); Chen, Jinhui (5); Zhai, Zhinian (6)
Author affiliation:(1) Fujian Engineering Research Center of Public Service Big Data Mining and Application, Faculty of Software, Fujian Normal University, Fuzhou; 350007, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (3) College of Computer Science and IT, Guangxi Normal University, Guilin; 541000, China; (4) Department of Computer Science, Jinan University, Guangzhou, Shi; 510630, China; (5) Graduate School of System Informatics, Kobe University, Kobe; 657-0013, Japan; (6) School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou; 311122, China
Corresponding author:Zhang, Jilian(zhangjilian@yeah.net)
Source title:IEEE Transactions on Multimedia
Abbreviated source title:IEEE Trans Multimedia
Volume:19
Issue:8
Issue date:August 2017
Publication year:2017
Pages:1881-1893
Article number:7895160
Language:English
ISSN:15209210
CODEN:ITMUF8
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Finding overlapping communities from multimedia social networks is an interesting and important problem in data mining and recommender systems. However, extant overlapping community discovery with swarm intelligence often generates overlapping community structures with superfluous small communities. To deal with the problem, in this paper, an efficient algorithm (LEPSO) is proposed for overlapping communities discovery, which is based on line graph theory, ensemble learning, and particle swarm optimization (PSO). Specifically, a discrete PSO, consisting of an encoding scheme with ordered neighbors and a particle updating strategy with ensemble clustering, is devised for improving the optimization ability to search communities hidden in social networks. Then, a postprocessing strategy is presented for merging the finer-grained and suboptimal overlapping communities. Experiments on some real-world and synthetic datasets show that our approach is superior in terms of robustness, effectiveness, and automatically determination of the number of clusters, which can discover overlapping communities that have better quality than those computed by state-of-the-art algorithms for overlapping communities detection. 1999-2012 IEEE.
Number of references:53
Main heading:Particle swarm optimization (PSO)
Controlled terms:Data mining - Graph theory - Social networking (online) - Swarm intelligence
Uncontrolled terms:Ensemble clustering - Ensemble learning - Line graph - Number of clusters - Optimization ability - Overlapping communities - Overlapping community detections - State-of-the-art algorithms
Classification code:723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1109/TMM.2017.2692650
Funding details: Number: -, Acronym: -, Sponsor: Fujian Normal University;Number: 2017J01497, Acronym: -, Sponsor: Natural Science Foundation of Fujian Province;Number: 2016YFB1000905, Acronym: -, Sponsor: -;Number: 2013CB329404, Acronym: -, Sponsor: -;Number: 61363009, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61672177, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Manuscript received October 10, 2016; revised January 7, 2017 and March 3, 2017; accepted March 27, 2017. Date of publication April 12, 2017; date of current version July 15, 2017. This work was supported in part by the China 1000-Plan National Distinguished Professorship, in part by the China 973 Program under Grant 2013CB329404, in part by the China Key Research Program under Grant 2016YFB1000905, in part by the Natural Science Foundation of China under Grant 61672177 and Grant 61363009, in part by the Natural Science Foundation of Fujian Province under Grant 2017J01497, in part by the Guangxi Bagui Teams for Innovation and Research, and in part by the Guangxi Collaborative Innovation Center of MultisSource Information Integration and Intelligent Processing. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Shu-Ching Chen. (Corresponding authors: Faliang Huang; Jilian Zhang.) F. Huang is with the Fujian Engineering Research Center of Public Service Big Data Mining and Application, Faculty of Software, Fujian Normal University, Fuzhou 350007, China (e-mail: faliang.huang@gmail.com).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<290>

Accession number:20180904840307
Title:Data preprocessing methods for robust Fourier ptychographic microscopy
Authors:Zhang, Yan (1, 2); Pan, An (1, 2); Lei, Ming (1); Yao, Baoli (1, 3)
Author affiliation:(1) Chinese Academy of Sciences, Xi'An Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics, Xi'an, Shaanxi, China; (2) University of Chinese Academy of Sciences, Beijing, China; (3) Shanxi University, Collaborative Innovation Center of Extreme Optics, Taiyuan, Shanxi, China
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Optical Engineering
Abbreviated source title:Opt Eng
Volume:56
Issue:12
Issue date:December 1, 2017
Publication year:2017
Article number:123107
Language:English
ISSN:00913286
E-ISSN:15602303
CODEN:OPEGAR
Document type:Journal article (JA)
Publisher:SPIE
Abstract:Fourier ptychographic microscopy (FPM) is a recently developed computational imaging technique that achieves gigapixel images with both high resolution and large field-of-view. In the current FPM experimental setup, the dark-field images with high-angle illuminations are easily overwhelmed by stray lights and background noises due to the low signal-to-noise ratio, thus significantly degrading the achievable resolution of the FPM approach. We provide an overall and systematic data preprocessing scheme to enhance the FPM's performance, which involves sampling analysis, underexposed/overexposed treatments, background noises suppression, and stray lights elimination. It is demonstrated experimentally with both US Air Force (USAF) 1951 resolution target and biological samples that the benefit of the noise removal by these methods far outweighs the defect of the accompanying signal loss, as part of the lost signals can be compensated by the improved consistencies among the captured raw images. In addition, the reported nonparametric scheme could be further cooperated with the existing state-of-the-art algorithms with a great flexibility, facilitating a stronger noise-robust capability of the FPM approach in various applications. 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
Number of references:25
Main heading:Image enhancement
Controlled terms:Fourier transforms - Image reconstruction - Signal to noise ratio - Stray light
Uncontrolled terms:Biological samples - Computational imaging - Data preprocessing - Fourier - Large field of views - Low signal-to-noise ratio - Phase retrieval - State-of-the-art algorithms
Classification code:716.1 Information Theory and Signal Processing - 741.1 Light/Optics - 921.3 Mathematical Transformations
DOI:10.1117/1.OE.56.12.123107
Funding details: Number: 61377008, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors acknowledge the National Natural Science Foundation of China (Nos. 61377008 and 81427802). The authors have no relevant financial interests in this article and no potential conflicts of interest to disclose.

Database:Compendex
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<291>

Accession number:20183705811725
Title:Study on resin layer polishing of carbon fiber mirror based on ion beam figuring
Authors:Ding, Jiao Teng (1, 2); Fan, Xue Wu (1); Xu, Liang (1); Ma, Zhen (1); Xie, Yong Jie (1); Wang, Yong Jie (1); Luo, Yao (3)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Shannxi, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Xi'an Branch of China Academy of Space Technology, Shannxi, Xi'an; 710100, China
Source title:ICCM International Conferences on Composite Materials
Abbreviated source title:ICCM Int. Conf. Compos. Mater.
Volume:2017-August
Part number:1 of 1
Issue title:21st International Conference on Composite Materials, ICCM 2017
Issue date:2017
Publication year:2017
Language:English
Document type:Conference article (CA)
Conference name:21st International Conference on Composite Materials, ICCM 2017
Conference date:August 20, 2017 - August 25, 2017
Conference location:Xi'an, China
Conference code:138793
Publisher:International Committee on Composite Materials
Abstract:Based on the advantages of stress-free and non-liquid environment, ion beam polishing is the ideal processing technology for the Resin modified layer polishing of the carbon fiber mirror. Since the glass transition temperature of the resin is low, the energy absorbed by the surface of the mirror during ion beam processing can cause localized high temperatures, which can lead to the risk of resin softening. The finite element analysis software was used to simulate the heat transfer process of Ion beam acting on the resin modified layer. The optimum process parameters of the ion beam polishing were determined. At the same time, the resin layer surface polishing test was completed. The experimental results show that the surface polishing of the resin modified layer can be achieved by ion beam processing, and it has the convergence property and the correctness of the theoretical model is Verified. 2017 International Committee on Composite Materials. All rights reserved.
Number of references:8
Funding details: Number: 51402351, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work has been supported by the National Natural Science Foundation of China under Grant No.51402351.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<292>

Accession number:20172403788917
Title:A General Framework for Edited Video and Raw Video Summarization
Authors:Li, Xuelong (1); Zhao, Bin (2); Lu, Xiaoqiang (1)
Author affiliation:(1) Center for OPTical IMagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Center for OPTical IMagery Analysis and Learning, Northwestern Polytechnical University, Xi'an; 710072, China
Corresponding author:Lu, Xiaoqiang
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:26
Issue:8
Issue date:August 2017
Publication year:2017
Pages:3652-3664
Article number:7904630
Language:English
ISSN:10577149
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In this paper, we build a general summarization framework for both of edited video and raw video summarization. Overall, our work can be divided into three folds. 1) Four models are designed to capture the properties of video summaries, i.e., containing important people and objects (importance), representative to the video content (representativeness), no similar key-shots (diversity), and smoothness of the storyline (storyness). Specifically, these models are applicable to both edited videos and raw videos. 2) A comprehensive score function is built with the weighted combination of the aforementioned four models. Note that the weights of the four models in the score function, denoted as property-weight, are learned in a supervised manner. Besides, the property-weights are learned for edited videos and raw videos, respectively. 3) The training set is constructed with both edited videos and raw videos in order to make up the lack of training data. Particularly, each training video is equipped with a pair of mixing-coefficients, which can reduce the structure mess in the training set caused by the rough mixture. We test our framework on three data sets, including edited videos, short raw videos, and long raw videos. Experimental results have verified the effectiveness of the proposed framework. 1992-2012 IEEE.
Number of references:53
Main heading:Video recording
Controlled terms:Mixing
Uncontrolled terms:Mixing coefficient - property-weight - Score function - Training data - Training sets - Video contents - Video summaries - Video summarization
Classification code:716.4 Television Systems and Equipment - 802.3 Chemical Operations
DOI:10.1109/TIP.2017.2695887
Funding details: Number: LSIT201408, Acronym: -, Sponsor: -;Number: KGZD-EWT03, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: QYZDB-SSW-JSC015, Acronym: -, Sponsor: -;Number: 61472413, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61761130079, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Grant 61472413 and Grant 61761130079, the Key Research Program of the Chinese Academy of Sciences under Grant KGZD-EWT03, the Open Research Fund of the Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences under Grant LSIT201408, and the Young Top-notch Talent Program of Chinese Academy of Sciences under Grant QYZDB-SSW-JSC015.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<293>

Accession number:20180304654851
Title:Design and analysis of push-broom optical camera's following windows
Authors:Chen, Su (1); Wang, Hu (1); Xue, Yaoke (1); Liu, Meiying (1); Wang, Lingguang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, No. 17 Xinxi Road, Xi'an; 710119, China
Corresponding author:Chen, Su(qqq1111ppp@aliyun.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10463
Part number:1 of 1
Issue title:AOPC 2017: Space Optics and Earth Imaging and Space Navigation
Issue date:2017
Publication year:2017
Article number:1046313
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614079
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Space Optics and Earth Imaging and Space Navigation, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133232
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:In order to solve the problem of push-broom optical camera's imagery quality difficult to content request which windows size is too large, the author proposed a kind of project for camera's following windows. The author analysed the characteristic of the push-broom optical camera's windows, and proposed the ideal model of the push-broom optical camera's windows. Simultaneously, analyzed the transformational rule of the windows' location and size in the ideal condition. The author proposed the design project of the push-broom optical camera's following windows according to the result of the ideal windows' analysis, and performed an analysis of kinematics simultaneously. Finally, the author designed and analyzed kinematics for the following windows in allusion to a certain push-broom optical camera. According the analysis result, this project could decrease a half size of the light opening area compare with the current technique. It could decrease the stray light's influence of the camera's imagery quality, the following windows move smoothly, and this project could be satisfied to the requirements of engineering use. 2017 SPIE.
Number of references:9
Main heading:Cameras
Controlled terms:Earth (planet) - Kinematics - Machine design - Stray light
Uncontrolled terms:Design and analysis - Design projects - Ideal model - Kinematics analysis - Mechanism design - Opening areas - Optical camera - Push-broom
Classification code:601 Mechanical Design - 741.1 Light/Optics - 742.2 Photographic Equipment - 931.1 Mechanics
DOI:10.1117/12.2284267
Funding details: Number: 2013YQ310799, Acronym: -, Sponsor: -;
Funding text:This research is supported by the Special Project on Development of National Key Instruments and Equipments (No. 2013YQ310799).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<294>

Accession number:20171703607511
Title:ADRC system of FSM for image motion compensation
Authors:Wang, Kaidi (1, 2); Su, Xiuqin (1); Li, Zhe (1); Wu, Shaobo (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, 17 Xinxi Road, Xi'an; 710119, China; (2) University of Chinese, Academy of Sciences, 19 A Yuquan Road, Beijing; 100049, China
Corresponding author:Su, Xiuqin
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:1025604
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:In order to increase the speed controlling accuracy of fast steering mirror (FSM) for image motion compensation and thus to increase the definition of picture taken by moving camera, active disturbance rejection control (ADRC) is designed. First, mathematical model of FSM driven by voice coil motor (VCM) is established. Next, ADRC algorithm and its simplified form in actual application are clarified. Finally, simulation research for controlled object is made. The result is compared to control effect of PID. Simulation curves demonstrate that the settling time of ADRC is 6 ms and the bandwidth of system attains 102.2 Hz, which are nearly the same as those of PID. When the error is very small, it can converge to zero at a faster rate if ADRC is used. When the same range disturbance is given to system, the relative error of ADRC reaches 0.050%, which is about 42% of that of PID. 2017 SPIE.
Number of references:9
Main heading:Disturbance rejection
Controlled terms:Motion compensation - Photonics - Position control
Uncontrolled terms:Active disturbance rejection controls - ADRC - Controlled objects - Fast steering mirror - Image motion compensation - Simulation curves - Simulation research - Voice coil motors
Classification code:731 Automatic Control Principles and Applications - 731.3 Specific Variables Control - 741.1 Light/Optics
Numerical data indexing:Frequency 1.02e+02Hz, Percentage 4.20e+01%, Percentage 5.00e-02%, Time 6.00e-03s
DOI:10.1117/12.2268727

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<295>

Accession number:20180404671170
Title:Design of an off-Axis reflective zoom optical system
Authors:Guo, Zhanli (1, 2); Yang, Hongtao (1); Mei, Chao (1); Yan, Aqi (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xinxi Road No17, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Yang, Hongtao
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10462
Part number:1 of 1
Issue title:AOPC 2017: Optical Sensing and Imaging Technology and Applications
Issue date:2017
Publication year:2017
Article number:104623M
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614055
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optical Sensing and Imaging Technology and Applications, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133396
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:With the limit of optical materials, it is difficult to design zoom optical systems which have long focal length by refractive systems with a simple configuration. All-reflective zoom optical systems could be lightweighted, compact and free of chromatic aberrations, and reflective optical systems can be unobscured by off-Axis mirrors and have very good application foreground. In this paper, an all-reflective zoom optical system was designed, the all-reflective zoom optical system worked in the band of 400~1000nm, the diameter of the pupil was 100mm, the F number was 6~15, focal length varied from 600~1500mm, field of view (FOV) was 2°×0.8°~0.8°×0.48°. The pixel size of detector was 10×10μm. The result showed that MTF was higher than 0.3 at 50lp/mm and the quality of the optical system approached the diffraction limit, which met the design demand. 2017 SPIE.
Number of references:8
Main heading:Optical systems
Controlled terms:Aberrations - Diffraction - Mirrors
Uncontrolled terms:All-reflective zoom - Chromatic aberration - Diffraction limits - Long focal lengths - Off-axis - Reflective mirrors - Reflective optical system - Zoom optical system
Classification code:741.3 Optical Devices and Systems
Numerical data indexing:Size 1.00e-01m, Size 4.00e-07m to 1.00e-06m, Size 6.00e-01m to 1.50e+00m
DOI:10.1117/12.2285188
Funding details: Number: No.Y629551213, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This work has been supported by the CAS "Light of West China" Program (No.Y629551213).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<296>

Accession number:20174204273439
Title:Structural evolution study of additions of Sb2S3and CdS into GeS2chalcogenide glass by Raman spectroscopy
Authors:Guo, Hai-Tao (1, 2); Zhang, Ming-Jie (1, 3); Xu, Yan-Tao (2); Xiao, Xu-Sheng (2); Yang, Zhi-Yong (1)
Author affiliation:(1) Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou; 221116, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (3) State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan; 430070, China
Corresponding author:Guo, Hai-Tao(guoht_001@opt.ac.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:26
Issue:10
Issue date:October 2017
Publication year:2017
Article number:104208
Language:English
ISSN:16741056
E-ISSN:20583834
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:The structures of pseudo-binary GeS2Sb2S3, GeS2CdS, Sb2S3CdS, and pseudo-ternary GeS2Sb2S3CdS chalcogenide systems are systematically investigated by Raman spectroscopy. It is shown that a small number of [S3GeGeS3] structural units (SUs) and -S-S-/S8groups exist simultaneously in GeS2 glass which has a three-dimensional continuous network backbone consisting of cross-linked corner-sharing and edge-sharing [GeS4] tetrahedra. When Sb2S3is added into GeS2glass, the network backbone becomes interconnected [GeS4] tetrahedra and [SbS3] pyramids. Moreover, Ge atoms in [S3GeGeS3] SUs tend to capture S atoms from Sb2S3, leading to the formation of [S2SbSbS2] SUs. When CdS is added into GeS3glass, [Cd4GeS6] polyhedra are formed, resulting in a strong crystallization tendency. In addition, Ge atoms in [S3GeGeS3] SUs tend to capture S atoms from CdS, resulting in the dissolution of GeGe bond. Co-melting of Sb2S3or CdS with GeS2 reduces the viscosity of the melt and improves the homogeneity of the glass. The GeS2glass can only dissolve up to 10-mol% CdS without crystallization. In comparison, GeS2Sb2S3glasses can dissolve up to 20-mol% CdS, implying that Sb2S3could delay the construction of [Cd4GeS6] polyhedron and increase the dissolving amount of CdS in the glass. 2017 Chinese Physical Society and IOP Publishing Ltd.
Number of references:47
Main heading:Germanium compounds
Controlled terms:Antimony compounds - Atoms - Cadmium sulfide - Chalcogenides - Cobalt compounds - Geometry - Germanium - Glass - II-VI semiconductors - Raman spectroscopy - Structure (composition)
Uncontrolled terms:Chalcogenide glass - Corner sharing - Crystallization tendency - Network backbones - Pseudo-binaries - S-systems - Structural evolution - Structural unit
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.3 Glass - 921 Mathematics - 931.3 Atomic and Molecular Physics - 951 Materials Science
DOI:10.1088/1674-1056/26/10/104208
Funding details: Number: 2015JQ5141, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61405240, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61475189, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61575086, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: KLALMD-2015-08, Acronym: -, Sponsor: -;
Funding text:?Project supported by the National Natural Science Foundation of China (Grant Nos. 61475189, 61405240, and 61575086), the Natural Science Basic Research Project in Shaanxi Province, China (Grant No. 2015JQ5141), and the Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, China (Grant No. KLALMD-2015-08). ?Corresponding author. E-mail: guoht 001@opt.ac.cn ?Corresponding author. E-mail: yangzhiyong@jsnu.edu.cn

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<297>

Accession number:20170403275293
Title:Penalized Linear Discriminant Analysis of Hyperspectral Imagery for Noise Removal
Authors:Lu, Ming (1, 2, 3); Hu, Luojia (3); Yue, Tianxiang (1); Chen, Ziyue (3); Chen, Bin (3); Lu, Xiaoqiang (4); Xu, Bing (3, 5)
Author affiliation:(1) State Key Laboratory of Resources and Environment Information System, Institute of Geographical Science and Natural Resources Research, Chinese Academy of Sciences, Beijing; 100101, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) State Key Lab of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing; 100875, China; (4) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) Ministry of Education Key Lab for Earth System Modelling, Center for Earth System Science, School of Environment, Tsinghua University, Beijing; 100084, China
Corresponding author:Xu, Bing
Source title:IEEE Geoscience and Remote Sensing Letters
Abbreviated source title:IEEE Geosci. Remote Sens. Lett.
Volume:14
Issue:3
Issue date:March 2017
Publication year:2017
Pages:359-363
Article number:7812585
Language:English
ISSN:1545598X
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The existence of noise in hyperspectral ima-gery (HSI) seriously affects image quality. Noise removal is one of the most important and challenging tasks to complete before hyperspectral information extraction. Though many advances have been made in alleviating the effect of noise, problems, including a high correlation among bands and predefined structure of noise covariance, still prevent us from the effective implementation of hyperspectral denoising. In this letter, a new algorithm named the penalized linear discriminant analysis (PLDA) and noise adjusted principal components transformation (NAPCT) was proposed. PLDA was applied to search for the best noise covariance structure, while the NAPCT was employed to remove the noise. The results of the tests with both HJ-1A HSI and EO-1 Hyperion showed that the proposed PLDA-NAPCT method could remove the noise effectively and that it could preserve the spectral fidelity of the restored hyperspectral images. Specifically, the recovered spectral curves using the proposed method are visually more similar to the original image compared with the control methods; quantitative matrices, including the noise reduction ration and mean relative deviation, also showed that the PLDA-NAPCT produced less bias than the control methods. Furthermore, the PLDA-NAPCT method is sensor-independent, and it could be easily adapted for removing the noise from different sensors. 2017 IEEE.
Number of references:13
Main heading:Image denoising
Controlled terms:Discriminant analysis - Image analysis - Linear transformations - Mathematical transformations - Noise abatement - Principal component analysis - Remote sensing - Spectroscopy
Uncontrolled terms:Hyper-spectral imageries - Hyperspectral denoising - Hyperspectral imagery - Hyperspectral information - Linear discriminant analysis - Noise removal - Principal components transformations - Quantitative matrices
Classification code:716.1 Information Theory and Signal Processing - 751.4 Acoustic Noise - 921.3 Mathematical Transformations - 922 Statistical Methods - 922.2 Mathematical Statistics
DOI:10.1109/LGRS.2016.2643001
Funding details: Number: .2016YFA0600104, Acronym: -, Sponsor: -;Number: 41421001, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 91325204, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Key Research and Development Program of China under Grant.2016YFA0600104 and in part by the National Natural Science Foundation of China under Grant 91325204 and Grant 41421001.

Database:Compendex
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<298>

Accession number:20171403544917
Title:Non-diffracting optical Bloch oscillations in hexagonal photonic lattices
Authors:Liu, Sheng (1); Rao, Bingjie (1); Wang, Meirong (1); Zhang, Peng (2); Xiao, Fajun (1); Gan, Xuetao (1); Zhao, Jianlin (1)
Author affiliation:(1) Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an; 710129, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:7
Issue date:April 3, 2017
Publication year:2017
Pages:7475-7482
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Light beams undergoing optical Bloch oscillations (OBOs) in two-dimensional (2D) photonic lattices suffer from severe diffraction along the perpendicular direction to the oscillation plane. In this paper, we propose and demonstrate that such diffraction could be suppressed in hexagonal photonic lattices via sophisticated managements of the discrete diffraction. By positioning the Fourier spectrum of the beam to a special region in the Brillouin zone, the light driven by the OBO experiences normal and anomalous diffractions alternatively, leading to a non-diffracting propagation for a long distance. We show that non-diffracting OBOs can be implemented not only for Gaussian beam but also for other complex 2D beams including self-accelerating Airy beams and vortex beams. Our results provide novel insights into the diffraction or dispersion engineering of waves in periodic structures. 2017 Optical Society of America.
Number of references:26
Main heading:Optical lattices
Controlled terms:Diffraction - Gaussian beams - Photonics
Uncontrolled terms:Anomalous diffraction - Bloch oscillations - Brillouin zones - Discrete diffraction - Dispersion engineering - Fourier spectra - Nondiffracting - Two-dimensional (2D) photonic lattices
Classification code:711 Electromagnetic Waves - 741.1 Light/Optics - 744.8 Laser Beam Interactions
DOI:10.1364/OE.25.007475
Funding details: Number: U1630125, Acronym: -, Sponsor: NSAF Joint Fund;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2016JQ6004, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61675168, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11574389, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11304250, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11634010, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 3102015ZY057, Acronym: -, Sponsor: -;Number: -, Acronym: -, Sponsor: China Academy of Engineering Physics THz Science and Technology Foundation;
Funding text:Natural National Science Foundation (NSFC) (61675168, 11634010, 11304250, and 11574389); Joint Fund of the National Natural Science Foundation Committee of China Academy of Engineering Physics (NSAF) (U1630125); the Fundamental Research Funds for the Central Universities (3102015ZY057); the Natural Science Basic Research Plan in Shaanxi Province of China (2016JQ6004).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<299>

Accession number:20170603332883
Title:Sheared-beam imaging target reconstruction based on all-phase spectrum analysis
Authors:Chen, Ming-Lai (1); Luo, Xiu-Juan (1); Zhang, Yu (1); Lan, Fu-Yang (1); Liu, Hui (1); Cao, Bei (1); Xia, Ai-Li (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Chen, Ming-Lai(shuxuemlchen@163.com)
Source title:Wuli Xuebao/Acta Physica Sinica
Abbreviated source title:Wuli Xuebao
Volume:66
Issue:2
Issue date:January 20, 2017
Publication year:2017
Article number:024203
Language:Chinese
ISSN:10003290
CODEN:WLHPAR
Document type:Journal article (JA)
Publisher:Institute of Physics, Chinese Academy of Sciences
Abstract:Sheared-beam imaging technique is considered to be a non-conventional speckle technique for remote imaging through turbulent medium. In this high resolution imaging technique, three beams are splitted from one laser source and illuminate a remote target simultaneously in shearing distribution. Each beam is modulated by a tiny frequency shift so that these beams can interfere and beat together. The returning speckle signals are received by an array of detectors. The primary algorithm for the signal processing and image reconstruction has been developed previously. However, the reconstructed image is deteriorated by the frequency drifting error and spectrum leakage. These frequency errors are always from the transmitter and scattered signals that are caused by spectrum-shift errors from acoustic-optic modulators, atmospheric turbulence, Doppler effects of moving targets, etc. To solve the problems mentioned above, in this paper we propose a new image reconstruction algorithm based on the all-phase spectrum analysis theory. The all-phase fast Fourier transform (FFT) spectrum analysis theory, which can effectively inhibit spectral leakage and correct speckle spectrum, is used to process the scattered signals. By searching for the accurate positions of the beat frequency components in the transformed frequency domain data, the speckle amplitude and phase difference frames can be extracted accurately. Based on the speckle phase-difference frames, the phase distribution of the wavefront is derived by least-square algorithm. The phase distribution in grid is highly coherent, in which each point is related to the phases of its four nearest neighbors. If an initial phase map is given or preset, the phase map of the wavefront can be estimated accurately by Gauss-Seidel method. Meanwhile, the amplitude of wavefront is obtained by the algebraic operation of speckle amplitude frames. The reconstructed wavefront is inverse Fourier transformed to yield a two dimensional image. A series of speckled images of the same object are averaged to reduce the speckle noise. The proposed method improves the ability of system imaging in the actual imaging environment. Simulation experiments validate the effectiveness of the proposed algorithm, and simulation results show that the proposed image reconstruction algorithm can inhibit the frequency errors from influencing imaging quality when there exist frequency errors in scattered signals. Thus, the imaging quality of the algorithm based on the all-phase FFT method is much better than that of the algorithm based on the traditional FFT method. The substantial usage of this technique is widely spread after the reconstruction algorithm has been optimized. 2017 Chinese Physical Society.
Number of references:20
Page count:6
Main heading:Spectrum analysis
Controlled terms:Atmospheric turbulence - Computerized tomography - Errors - Fast Fourier transforms - Frequency domain analysis - Image reconstruction - Inverse problems - Speckle - Wavefronts
Uncontrolled terms:Acoustic-optic modulators - All-phase spectrum analysis - Beam imaging - High-resolution imaging - Image reconstruction algorithm - Least square algorithms - Reconstruction algorithms - Two dimensional images
Classification code:443.1 Atmospheric Properties - 723.5 Computer Applications - 741.1 Light/Optics - 921.3 Mathematical Transformations
DOI:10.7498/aps.66.024203
Funding details: Number: 61505248, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Project supported by the National Natural Science Foundation of China (Grant No. 61505248).

Database:Compendex
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<300>

Accession number:20171203485833
Title:Visible and near-infrared optical properties of Nd:CLNGG crystal waveguides formed by proton implantation
Authors:Liu, Chun-Xiao (1); Shen, Xiao-Liang (1); Li, Wei-Nan (2); Wei, Wei (1)
Author affiliation:(1) School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing; 210023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China
Corresponding author:Liu, Chun-Xiao(cxliu0816@sina.com)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:26
Issue:3
Issue date:March 2017
Publication year:2017
Article number:034207
Language:English
ISSN:16741056
E-ISSN:20583834
Document type:Journal article (JA)
Publisher:Institute of Physics Publishing
Abstract:A Nd:CLNGG waveguide structure operated at wavelengths of both 632.8 nm and 1539 nm was demonstrated for the first time to our knowledge, which was produced by the 480-keV H+ ion implantation with a dose of 1.0 × 1017protons/cm2. Its propagating modes at 632.8 nm and 1539 nm were measured by the well-known prism coupling technique. The refractive index profile at either 632.8-nm wavelength or 1539-nm wavelength was optical barrier type in the proton-implanted Nd:CLNGG crystal optical waveguide, which was calculated by using the reflectivity calculation method. The near-field light intensity distributions were also simulated by the finite-difference beam propagation method in the visible and nearinfrared bands. 2017 Chinese Physical Society and IOP Publishing Ltd.
Number of references:24
Main heading:Infrared devices
Controlled terms:Beam propagation method - Ion implantation - Optical waveguides - Refractive index - Waveguides
Uncontrolled terms:Crystal waveguides - Finite difference beam propagation method - Prism coupling technique - Proton implantation - Proton implanted - Refractive index profiles - Visible and near infrared - Waveguide structure
Classification code:711 Electromagnetic Waves - 714.3 Waveguides - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 921 Mathematics
Numerical data indexing:Size 1.54e-06m, Size 6.33e-07m
DOI:10.1088/1674-1056/26/3/034207
Funding details: Number: -, Acronym: NUPT, Sponsor: Nanjing University of Posts and Telecommunications;Number: NY214159, Acronym: -, Sponsor: -;Number: ZSF0401, Acronym: -, Sponsor: -;Number: 61177084, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11405041, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Project supported by the National Natural Science Foundation of China (Grant Nos. 11405041 and 61177084), the Nanjing University of Posts and Telecommunications Scientific Foundation (NUPTSF), China (Grant No. NY214159), and the RCOCET, China (Grant No. ZSF0401).

Database:Compendex
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<301>

Accession number:20173204034220
Title:Practical system for the generation of pulsed quantum frequency combs
Authors:Roztocki, Piotr (1); Kues, Michael (1, 2); Reimer, Christian (1); Wetzel, Benjamin (1, 3); Sciara, Stefania (1, 4); Zhang, Yanbing (1); Cino, Alfonso (4); Little, Brent E. (5); Chu, Sai T. (6); Moss, David J. (7); Morandotti, Roberto (1, 8, 9)
Author affiliation:(1) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (2) School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow; G12 8LT, United Kingdom; (3) School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton; BN1 9RH, United Kingdom; (4) University of Palermo, Department of Energy, Information Engineering and Mathematical Models, Palermo, Italy; (5) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (6) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (7) Centre for Micro Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (8) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China; (9) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia
Corresponding author:Kues, Michael(michael.kues@emt.inrs.ca)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:25
Issue:16
Issue date:August 7, 2017
Publication year:2017
Pages:18940-18949
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:The on-chip generation of large and complex optical quantum states will enable low-cost and accessible advances for quantum technologies, such as secure communications and quantum computation. Integrated frequency combs are on-chip light sources with a broad spectrum of evenly-spaced frequency modes, commonly generated by four-wave mixing in optically-excited nonlinear micro-cavities, whose recent use for quantum state generation has provided a solution for scalable and multi-mode quantum light sources. Pulsed quantum frequency combs are of particular interest, since they allow the generation of single-frequency-mode photons, required for scaling state complexity towards, e.g., multi-photon states, and for quantum information applications. However, generation schemes for such pulsed combs have, to date, relied on micro-cavity excitation via lasers external to the sources, being neither versatile nor power-efficient, and impractical for scalable realizations of quantum technologies. Here, we introduce an actively-modulated, nested-cavity configuration that exploits the resonance pass-band characteristic of the micro-cavity to enable a mode-locked and energy-efficient excitation. We demonstrate that the scheme allows the generation of high-purity photons at large coincidence-to-accidental ratios (CAR). Furthermore, by increasing the repetition rate of the excitation field via harmonic mode-locking (i.e. driving the cavity modulation at harmonics of the fundamental repetition rate), we managed to increase the pair production rates (i.e. source efficiency), while maintaining a high CAR and photon purity. Our approach represents a significant step towards the realization of fully on-chip, stable, and versatile sources of pulsed quantum frequency combs, crucial for the development of accessible quantum technologies. 2017 Optical Society of America.
Number of references:42
Main heading:Quantum cryptography
Controlled terms:Accidents - Energy efficiency - Excited states - Four wave mixing - Light - Light sources - Locks (fasteners) - Microcavities - Photons - Quantum computers - Quantum optics
Uncontrolled terms:Cavity configuration - Harmonic mode locking - Multiphoton state - On-chip generation - Quantum information applications - Quantum state generation - Quantum technologies - Single-frequency mode
Classification code:525.2 Energy Conservation - 714 Electronic Components and Tubes - 722 Computer Systems and Equipment - 741.1 Light/Optics - 914.1 Accidents and Accident Prevention - 931.3 Atomic and Molecular Physics
DOI:10.1364/OE.25.018940
Funding details: Number: 7004189, Acronym: CityU, Sponsor: City University of Hong Kong;Number: -, Acronym: REA, Sponsor: Research Executive Agency;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: 074-U 01, Acronym: -, Sponsor: Government Council on Grants, Russian Federation;Number: 656607, Acronym: -, Sponsor: -;Number: PIOF-GA-2013-625466, Acronym: -, Sponsor: -;Number: XDB24030300, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: NSERC, Sponsor: Natural Sciences and Engineering Research Council of Canada;Number: DP150104327, Acronym: -, Sponsor: -;Number: -, Acronym: -, Sponsor: Canada Research Chairs;
Funding text:Natural Sciences and Engineering Research Council of Canada (NSERC) (Steacie, Strategic, Discovery, and Acceleration Grants Schemes, Vanier Canada Graduate Scholarships); MESI PSR-SIIRI Initiative; Canada Research Chair Program; Australian Research Council Discovery Projects (DP150104327); European Union?s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant (656607); CityU SRG-Fd program (7004189); Strategic Priority Research Program of the Chinese Academy of Sciences (XDB24030300); People Programme (Marie Curie Actions) of the European Union?s FP7 Programme under REA grant agreement INCIPIT (PIOF-GA-2013-625466); Government of the Russian Federation through the ITMO Fellowship and Professorship Program (Grant 074-U 01); 1000 Talents Sichuan Program (China) We thank R. Helsten for technical insights; J. Aza?a for providing some of the required experimental equipment; P. Kung from QPS Photronics for the help and processing equipment; as well as QuantumOpus and N. Bertone of OptoElectronics Components for their support and for providing us with state-of-the-art photon detection equipment.

Database:Compendex
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<302>

Accession number:20160201782760
Title:Learning Sampling Distributions for Efficient Object Detection (Open Access)
Authors:Pang, Yanwei (1); Cao, Jiale (1); Li, Xuelong (2)
Author affiliation:(1) School of Electronic Information Engineering, Tianjin University, Tianjin; 300072, China; (2) Center for Optical Imagery Analysis and Learning, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Source title:IEEE Transactions on Cybernetics
Abbreviated source title:IEEE Trans. Cybern.
Volume:47
Issue:1
Issue date:January 2017
Publication year:2017
Pages:117-129
Article number:7373611
Language:English
ISSN:21682267
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Object detection is an important task in computer vision and machine intelligence systems. Multistage particle windows (MPW), proposed by Gualdi et al., is an algorithm of fast and accurate object detection. By sampling particle windows (PWs) from a proposal distribution (PD), MPW avoids exhaustively scanning the image. Despite its success, it is unknown how to determine the number of stages and the number of PWs in each stage. Moreover, it has to generate too many PWs in the initialization step and it unnecessarily regenerates too many PWs around object-like regions. In this paper, we attempt to solve the problems of MPW. An important fact we used is that there is a large probability for a randomly generated PW not to contain the object because the object is a sparse event relative to the huge number of candidate windows. Therefore, we design a PD so as to efficiently reject the huge number of nonobject windows. Specifically, we propose the concepts of rejection, acceptance, and ambiguity windows and regions. Then, the concepts are used to form and update a dented uniform distribution and a dented Gaussian distribution. This contrasts to MPW which utilizes only on region of support. The PD of MPW is acceptance-oriented whereas the PD of our method (called iPW) is rejection-oriented. Experimental results on human and face detection demonstrate the efficiency and the effectiveness of the iPW algorithm. The source code is publicly accessible. 2016 IEEE.
Number of references:47
Main heading:Object detection
Controlled terms:Face recognition - Feature extraction - Object recognition
Uncontrolled terms:Efficient object detections - Initialization step - Machine intelligence - Proposal distribution - Publicly accessible - Random sampling - Sampling distribution - Uniform distribution
Classification code:723.2 Data Processing and Image Processing
DOI:10.1109/TCYB.2015.2508603
Funding details: Number: 2014CB340400, Acronym: -, Sponsor: -;Number: 61222109, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61503274, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61172121, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61271412, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the National Basic Research Program of China (973 Program) under Grant 2014CB340400, and in part by the National Natural Science Foundation of China under Grant 61172121, Grant 61271412, Grant 61503274, and Grant 61222109.

Database:Compendex
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<303>

Accession number:20182205255953
Title:The simulation and experiment of a time-resolved polarization interferometer
Authors:Gao, Xiaohui (1); Yu, Tao (1); Wu, Yinhua (1); Wei, Ruyi (1); Xu, Guanghui (2)
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of CAS, Xi'An Institute of Optics and Precision Mechanics, Xi'an, China; (2) Library of xi'An Aeronautical University, Xi'an, China
Corresponding author:Gao, Xiaohui
Source title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Abbreviated source title:Proc. - Int. Congr. Image Signal Process., BioMed. Eng. Inf., CISP-BMEI
Volume:2018-January
Part number:1 of 1
Issue title:Proceedings - 2017 10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Issue date:July 2, 2017
Publication year:2017
Pages:1-5
Language:English
ISBN-13:9781538619377
Document type:Conference article (CA)
Conference name:10th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics, CISP-BMEI 2017
Conference date:October 14, 2017 - October 16, 2017
Conference location:Shanghai, China
Conference code:135071
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:In a traditional dual optics routes Michelson interferometer, the critical time delay is acquired by scanning one mirror that needs a precision physical translation mechanism. The so-called translation mechanism usually dominates the risk, cost, power consumption, and performance of such instruments which limits the development of interference spectrometer. This paper describes the principle of a novel temporal modulated interference spectrometer that generates time delay by using birefringence crystal because of speed difference and the refraction indexes between the ordinary and the extraordinary component. A greater optical path difference can be abstained by cascading a series of wave plates that interlaced with a series of achromatic ferroelectric liquid crystal switches. Through the simulation analysis and experiment of the principle of polarization interference spectrometer, it demonstrates the validity of the instrument principle and data inversion method. 2017 IEEE.
Number of references:16
Main heading:Image processing
Controlled terms:Biomedical engineering - Birefringence - Liquid crystals - Michelson interferometers - Optical switches - Polarization - Spectrometers - Time delay
Uncontrolled terms:Ferroelectric liquid crystal - Imaging spectrometers - Interference spectrometer - Optical path difference - Polarization interferences - Polarization interferometer - Simulation analysis - Temporal modulations
Classification code:461.1 Biomedical Engineering - 713 Electronic Circuits - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 941.3 Optical Instruments
DOI:10.1109/CISP-BMEI.2017.8302038
Funding details: Number: 61405239, Acronym: -, Sponsor: National Natural Science Foundation of China;Number: 61405239, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:This research is sponsored by the National Natural Science Foundation of China (Grant No. 61405239, 11327303).The simulation and experiment was carried out in the Key Laboratory of Spectral Imaging Technology of CAS. Except for the financial support by the National Natural Science Foundation of China (Grant No. 61405239, 11327303), we also be sponsored by Chinese Academy of Defense Science and Technology Innovation Fund.

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<304>

Accession number:20182405305274
Title:Reconfigurable microwave photonic differentiator based on an integrated Kerr frequency comb source
Authors:Xu, Xingyuan (1); Wu, Jiayang (1); Shoeiby, Mehrdad (2); Nguyen, Thach G. (2); Chu, Sai T. (3); Little, Brent E. (4); Morandotti, Roberto (5, 6, 7); Mitchell, Arnan (2); Moss, David J. (1)
Author affiliation:(1) Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia; (3) Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Hong Kong; (4) Xi'An Institute of Optics and Precision Mechanics Precision Mechanics, CAS, Xi'an, China; (5) INSR-énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X1S2, Canada; (6) National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China
Source title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Abbreviated source title:Opto-Electron. Commun. Conf., OECC Photonics Glob. Conf., PGC
Volume:2017-November
Part number:1 of 1
Issue title:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Issue date:November 17, 2017
Publication year:2017
Pages:1-2
Language:English
ISBN-13:9781509062935
Document type:Conference article (CA)
Conference name:2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017
Conference date:July 31, 2017 - August 4, 2017
Conference location:Singapore, Singapore
Conference code:132616
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:We propose and experimentally demonstrate a reconfigurable photonic RF differentiator based on a Kerr frequency comb generated in an integrated nonlinear microring resonator. The RF magnitude and phase responses are experimentally characterized. Systems demonstrations for Gaussian input signals are also performed. 2017 IEEE.
Number of references:8
Main heading:Microwave resonators
Controlled terms:Optical resonators - Photonics - Signal processing
Uncontrolled terms:Differentiators - Frequency combs - Gaussian inputs - Microring resonator - Microwave Photonics - Phase response - Reconfigurable - Reconfigurable photonics
Classification code:714 Electronic Components and Tubes - 716.1 Information Theory and Signal Processing - 741.3 Optical Devices and Systems
DOI:10.1109/OECC.2017.8114872
Funding details:
Funding text:We also performed systems demonstrations of real-time signal differentiation for the Gaussian input pulses shown in Fig. 4(a), with a full width half maximum (FWHM) of ~0.12 ns, generated by an arbitrary waveform generator, with the output signal after differentiation recorded by a fast sampling oscilloscope. As shown in Fig. 4(b), the measured output waveform agrees well with theory, which further confirms the feasibility of our approach. IV. CONCLUSION We demonstrate a reconfigurable photonic RF differentiator based on an integrated Kerr comb source, achieving good performance that agrees well with theory. ACKNOWLEDGMENTS This work was supported by the Australian Research Council Discovery Projects Program and NSERC Canada.

Database:Compendex
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<305>

Accession number:20182405301283
Title:Noise reduction and analysis for Chang'E-1 Imaging Interferometer (IIM) data
Authors:Zhu, Feng (1); Liu, Jiahang (1); Chen, Tieqiao (1)
Author affiliation:(1) Laboratory of Remote Sensing and Intelligent Information System, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
Source title:Proceedings of 2017 International Conference on Progress in Informatics and Computing, PIC 2017
Abbreviated source title:Proc. Int. Conf. Prog. Inf. Comput., PIC
Part number:1 of 1
Issue title:Proceedings of 2017 International Conference on Progress in Informatics and Computing, PIC 2017
Issue date:2017
Publication year:2017
Pages:148-153
Language:English
ISBN-13:9781538619773
Document type:Conference article (CA)
Conference name:5th International Conference on Progress in Informatics and Computing, PIC 2017
Conference date:December 15, 2017 - December 17, 2017
Conference location:Nanjing, China
Conference code:136571
Sponsor:IEEE Beijing Section; Nanjing University of Science and Technology; Shanghai University of Finance and Economics
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Imaging Interferometer (IIM) aboard Chang'E-1 is a Fourier transform imaging spectrometer, with goals to analyze the abundance and distribution of chemical elements on the lunar surface. IIM data suffer from various degradations, which will lead to misleading interpretations of IIM data and inaccuracy of subsequent applications. In this paper, we introduced a noise reduction method based on low-rank matrix decomposition theory. The restoration results are expected to have a better performance in image quality and spectral signatures according to visual and quantitative assessments. Meanwhile, we analyze the characteristic of the noise separated from IIM data using top spectral view of noise cube. The preliminary analysis of the noise characteristics contribute to optimize the data preprocessing of IIM data such as spectrum reconstruction and radiometric correction. 2017 IEEE.
Number of references:21
Main heading:Matrix algebra
Controlled terms:Chemical analysis - Chemical elements - Computation theory - Hyperspectral imaging - Image reconstruction - Interferometers - Noise abatement - Restoration - Spectroscopy
Uncontrolled terms:Chang'E-1 - Fourier transform imaging spectrometers - Imaging interferometers - Low-rank matrices - Noise reduction methods - Quantitative assessments - Radiometric corrections - Spectrum reconstruction
Classification code:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 751.4 Acoustic Noise - 804 Chemical Products Generally - 921.1 Algebra - 941.3 Optical Instruments
DOI:10.1109/PIC.2017.8359532

Database:Compendex
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<306>

Accession number:20171703607557
Title:A novel approach of an absolute coding pattern based on Hamiltonian graph
Authors:Wang, Ya'nan (1, 2); Wang, Huawei (1); Hao, Fusheng (1, 2); Liu, Liqiang (1, 2)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, China; (2) University of the Chinese Academy of Sciences, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10256
Part number:1 of 1
Issue title:Second International Conference on Photonics and Optical Engineering
Issue date:2017
Publication year:2017
Article number:102563K
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
Document type:Conference article (CA)
Conference name:2nd International Conference on Photonics and Optical Engineering
Conference date:October 14, 2016
Conference location:Xi'an, China
Conference code:127345
Publisher:SPIE
Abstract:In this paper, a novel approach of an optical type absolute rotary encoder coding pattern is presented. The concept is based on the principle of the absolute encoder to find out a unique sequence that ensures an unambiguous shaft position of any angular. We design a single-ring and a n-by-2 matrix absolute encoder coding pattern by using the variations of Hamiltonian graph principle. 12 encoding bits is used in the single-ring by a linear array CCD to achieve an 1080-position cycle encoding. Besides, a 2-by-2 matrix is used as an unit in the 2-track disk to achieve a 16-bits encoding pattern by using an area array CCD sensor (as a sample). Finally, a higher resolution can be gained by an electronic subdivision of the signals. Compared with the conventional gray or binary code pattern (for a 2nresolution), this new pattern has a higher resolution (2n?n) with less coding tracks, which means the new pattern can lead to a smaller encoder, which is essential in the industrial production. 2017 SPIE.
Number of references:9
Main heading:Signal encoding
Controlled terms:Encoding (symbols) - Hamiltonians - Photonics
Uncontrolled terms:Absolute encoders - Absolute rotary encoders - CCD sensors - Encoding patterns - Hamiltonian graph - Higher resolution - Industrial production - Optical encoder
Classification code:716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 741.1 Light/Optics
DOI:10.1117/12.2257823

Database:Compendex
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<307>

Accession number:20171103440249
Title:A Tunable Dispersion Waveguide Based on Graphene-Silicon Lateral Slot Geometric Structure (Open Access)
Authors:Li, Zhen (1); Liu, Hongjun (1, 2); Huang, Nan (1); Wang, Zhaolu (1); Han, Jing (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China
Corresponding author:Liu, Hongjun(liuhongjun@opt.ac.cn)
Source title:IEEE Photonics Journal
Abbreviated source title:IEEE Photon. J.
Volume:9
Issue:1
Issue date:February 2017
Publication year:2017
Article number:7823018
Language:English
ISSN:19430655
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:The dispersion profiles of a hybrid graphene-silicon (HyGS) slot waveguide with trilayers of graphene are investigated in this paper. By tuning the bias voltage on graphene layer, the zero dispersion wavelengths (ZDW) of HyGS slot waveguide can be tailored dynamically and effectively. With small disturbed voltage (6 V), a large ZDW tuning amount (200 nm) is achieved, without the need for changing the geometric structure of the waveguide, which has been verified with numerical simulation. Moreover, the dispersion curve of HyGS slot waveguide is flat enough (group velocity dispersion slope less than 2 ps/nm2·km), in the vicinity of ZDW. This waveguide is highly beneficial to such applications as integrated optics and graphene-related active optical devices. 2016 IEEE.
Number of references:34
Main heading:Waveguides
Controlled terms:Dispersion (waves) - Geometry - Graphene - Group velocity dispersion - Integrated optics - Nanostructures - Nonlinear optics - Silicon
Uncontrolled terms:Active optical devices - Dispersion curves - Dispersion profile - Geometric structure - Graphene layers - Sub-wavelength structures - Tunable dispersion - Zero-dispersion wavelength
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.3 Waveguides - 741.1.1 Nonlinear Optics - 761 Nanotechnology - 804 Chemical Products Generally - 921 Mathematics - 933 Solid State Physics
Numerical data indexing:Size 2.00e-07m, Voltage 6.00e+00V
DOI:10.1109/JPHOT.2017.2654447

Database:Compendex
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<308>

Accession number:20171703602276
Title:AID: A benchmark data set for performance evaluation of aerial scene classification
Authors:Xia, Gui-Song (1); Hu, Jingwen (1, 2); Hu, Fan (1, 2); Shi, Baoguang (3); Bai, Xiang (3); Zhong, Yanfei (1); Zhang, Liangpei (1); Lu, Xiaoqiang (4)
Author affiliation:(1) State Key Laboratory of Information Engineering, Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan; 430079, China; (2) Signal Processing Laboratory, School of Electronics Information, Wuhan University, Wuhan; 430072, China; (3) School of Electronics Information, Huazhong University of Science and Technology, Wuhan; 430074, China; (4) State Key Laboratory of Transient Optics and Photonics, Center for OPTical IMagery Analysis and Learning, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Xia, Gui-Song(guisong.xia@whu.edu.cn)
Source title:IEEE Transactions on Geoscience and Remote Sensing
Abbreviated source title:IEEE Trans Geosci Remote Sens
Volume:55
Issue:7
Issue date:July 2017
Publication year:2017
Pages:3965-3981
Article number:7907303
Language:English
ISSN:01962892
CODEN:IGRSD2
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Aerial scene classification, which aims to automatically label an aerial image with a specific semantic category, is a fundamental problem for understanding high-resolution remote sensing imagery. In recent years, it has become an active task in the remote sensing area, and numerous algorithms have been proposed for this task, including many machine learning and data-driven approaches. However, the existing data sets for aerial scene classification, such as UC-Merced data set and WHU-RS19, contain relatively small sizes, and the results on them are already saturated. This largely limits the development of scene classification algorithms. This paper describes the Aerial Image data set (AID): a large-scale data set for aerial scene classification. The goal of AID is to advance the state of the arts in scene classification of remote sensing images. For creating AID, we collect and annotate more than 10000 aerial scene images. In addition, a comprehensive review of the existing aerial scene classification techniques as well as recent widely used deep learning methods is given. Finally, we provide a performance analysis of typical aerial scene classification and deep learning approaches on AID, which can be served as the baseline results on this benchmark. 1980-2012 IEEE.
Number of references:100
Main heading:Classification (of information)
Controlled terms:Antennas - Benchmarking - Deep learning - Remote sensing - Semantics - Uranium compounds
Uncontrolled terms:Aerial images - Data-driven approach - High resolution remote sensing imagery - Large scale data sets - Performance analysis - Performance evaluations - Scene classification - Specific semantics
Classification code:716.1 Information Theory and Signal Processing
DOI:10.1109/TGRS.2017.2685945
Funding details: Number: 41501462, Acronym: -, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China under Contract 41501462 and Contract 91338113.

Database:Compendex
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<309>

Accession number:20173904210946
Title:Design and Test of Portable Hyperspectral Imaging Spectrometer (Open Access)
Authors:Zou, Chunbo (1, 2); Yang, Jianfeng (1); Wu, Dengshan (1); Zhao, Qiang (1); Gan, Yuquan (1); Fu, Di (1); Yang, Fanchao (1); Liu, Hong (1); Bai, Qinglan (1); Hu, Bingliang (1)
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 10049, China
Corresponding author:Zou, Chunbo(zouchb@opt.ac.cn)
Source title:Journal of Sensors
Abbreviated source title:J. Sensors
Volume:2017
Issue date:2017
Publication year:2017
Article number:7692491
Language:English
ISSN:1687725X
E-ISSN:16877268
Document type:Journal article (JA)
Publisher:Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
Abstract:We design and implement a portable hyperspectral imaging spectrometer, which has high spectral resolution, high spatial resolution, small volume, and low weight. The flight test has been conducted, and the hyperspectral images are acquired successfully. To achieve high performance, small volume, and regular appearance, an improved Dyson structure is designed and used in the hyperspectral imaging spectrometer. The hyperspectral imaging spectrometer is suitable for the small platform such as CubeSat and UAV (unmanned aerial vehicle), and it is also convenient to use for hyperspectral imaging acquiring in the laboratory and the field. 2017 Chunbo Zou et al.
Number of references:20
Main heading:Hyperspectral imaging
Controlled terms:Antennas - Spectral resolution - Spectrometers - Spectroscopy - Unmanned aerial vehicles (UAV)
Uncontrolled terms:Cubesat - Design and implements - Design and tests - Flight test - High spatial resolution - High spectral resolution - UAV (unmanned aerial vehicle)
Classification code:652.1 Aircraft, General - 741.1 Light/Optics - 741.3 Optical Devices and Systems
DOI:10.1155/2017/7692491
Funding details: Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work is supported by the National Natural Foundation of China under Grant 61501456.

Database:Compendex
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<310>

Accession number:20180104612237
Title:Repetition rate controllable filter-driven four wave mixing laser
Authors:Bao, Hualong (1); Cooper, Andrew (1); Lauro, Luigi Di (1); Rowley, Maxwell (1); Chu, Sai T. (2); Little, Brent E. (3); Morandotti, Roberto (4); Moss, David J (5); Peccianti, Marco (1); Pasquazi, Alessia (1)
Author affiliation:(1) Emergent Photonics (Epic) Lab, Dept. of Physics and Astronomy, University of Sussex, BN1 9QH, United Kingdom; (2) City University of Hong Kong, Tat Chee Avenue, Hong Kong; (3) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China; (4) INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (5) Swinburne University of Technology, Hawthorn; VIC; 3122, Australia
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Volume:Part F82-CLEO_Europe 2017
Part number:1 of 1
Issue title:The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Issue date:2017
Publication year:2017
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
Conference date:June 25, 2017 - June 29, 2017
Conference location:Munich, Germany
Conference code:139018
Publisher:OSA - The Optical Society
Number of references:4
Page count:1

Database:Compendex
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<311>

Accession number:20164803052067
Title:Proton-implanted optical waveguides fabricated in Er3+-doped phosphate glasses
Authors:Liu, Chun-Xiao (1); Shen, Xiao-Liang (1); Guo, Hai-Tao (2); Li, Wei-Nan (2); Wei, Wei (1)
Author affiliation:(1) School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing; 210023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi′an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi′an; 710119, China
Corresponding author:Liu, Chun-Xiao(cxliu0816@sina.com)
Source title:Optik
Abbreviated source title:Optik
Volume:131
Issue date:February 1, 2017
Publication year:2017
Pages:132-137
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:Er3+-doped phosphate glass is suitable to design and develop integrated photonic structures. Ion implantation is one of the most promising fabrication techniques for producing optical waveguides. In this work, we have combined Er3+-doped phosphate glass and ion implantation in order to improve the performances of waveguides. The proton-implanted Er3+-doped phosphate glass waveguides have been fabricated under implantation parameters with energies of (500 +550) keV and fluences of (1.0 + 2.0) × 1016ions/cm2. The guiding properties of the planar waveguide have been investigated at the wavelength of 632.8 nm through the prism-coupling system and the end-face coupling arrangement. Irradiation-induced damage and refractive index modulation have been simulated by the stopping and range of ions in matter 2010 and the intensity calculation method, respectively. It is an important step to the fabrication of rare-earth-doped optical integrated devices. 2016 Elsevier GmbH
Number of references:20
Main heading:Fabrication
Controlled terms:Glass - Ion implantation - Ions - Optical waveguides - Rare earths - Refractive index - Waveguides
Uncontrolled terms:Fabrication technique - Guiding properties - Implantation parameters - Integrated photonics - Optical integrated devices - Phosphate glass - Refractive index modulation - Stopping and range of ions in matters
Classification code:714.3 Waveguides - 741.1 Light/Optics - 804.2 Inorganic Compounds - 812.3 Glass
Numerical data indexing:Size 6.33e-07m
DOI:10.1016/j.ijleo.2016.11.080
Funding details: Number: ZSF0401, Acronym: -, Sponsor: -;Number: NY214159, Acronym: -, Sponsor: -;Number: 61177084, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 11405041, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 11405041 and 61177084 ), and NUPTSF (Grant No. NY214159 ), and Research Center of Optical Communications Engineering & Technology , Jiangsu Province (Grant No. ZSF0401 ).

Database:Compendex
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<312>

Accession number:20180304652990
Title:Brownian dynamics of the optically trapped spinning microparticles in low pressures
Authors:Lang, Mengjiao (1); Xiong, Wei (1); Xiao, Guangzong (1, 2); Han, Xiang (1); Tang, Jianxun (1)
Author affiliation:(1) College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha; 410073, China; (2) State Key Laboratory of Transient Optics and Photonic, Chinese Academy of Sciences, Xian; 710068, China
Corresponding author:Xiao, Guangzong(xiaoguangzong@nudt.edu.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10460
Part number:1 of 1
Issue title:AOPC 2017: Optoelectronics and Micro/Nano-Optics
Issue date:2017
Publication year:2017
Article number:1046010
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510614017
Document type:Conference article (CA)
Conference name:Applied Optics and Photonics China: Optoelectronics and Micro/Nano-Optics, AOPC 2017
Conference date:June 4, 2017 - June 6, 2017
Conference location:Beijing, China
Conference code:133231
Sponsor:Chinese Society for Optical Engineering; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Optical trap has become a powerful tool of biology and physics, since it has some useful functions such as optical rotator, optical spanner and optical binding. We present the translational motions in the transverse plane of a 4.4μm-diameter vaterite particle which is optically trapped in low pressures utilizing the Monte-Carlo method. We find that the air pressure around the microparticle plays an important part in the determination of dynamics of the trapped particle. According to the energy equipartition theorem, the position fluctuations of the optically trapped particle satisfy Maxwell-Bolzmann distributions. We present the features of particles' displacements and velocities changing with air pressures in detail, and find that the modulation of the trap stiffness makes a higher position variance. The mechanical quality factor Q larger than 10 induces a high peak of power spectral density. Our research presents a powerful tool towards further discovery of dynamical characteristics of optically trapped Brownian particles in low air pressures. 2017 SPIE.
Number of references:29
Main heading:Optical tweezers
Controlled terms:Atmospheric pressure - Brownian movement - Modulation - Monte Carlo methods - Spectral density
Uncontrolled terms:Ballistic motions - Dynamical characteristics - Mechanical quality factors - Position fluctuations - Position stability - Power spectrum density - Rotational modulation - Translational motions
Classification code:443.1 Atmospheric Properties - 744.9 Laser Applications - 801.3 Colloid Chemistry - 922.2 Mathematical Statistics
DOI:10.1117/12.2284450
Funding details: Number: 2017JJ3363, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The project is supported by Hunan Provincial Natural Science Foundation of China(2017JJ3363), and Open Research

Database:Compendex
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<313>

Accession number:20171503564241
Title:3 W narrow-linewidth ultra-short wavelength operation near 1707 nm in thulium-doped silica fiber laser with bidirectional pumping
Authors:Xiao, Xusheng (1, 2); Guo, Haitao (1); Yan, Zhijun (1); Wang, Hushan (1); Xu, Yantao (1); Lu, Min (1); Wang, Yishan (1); Peng, Bo (1)
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi’an; Shaanxi; 710119, China; (2) Graduate School of Chinese Academy of Sciences (CAS), Beijing; 100049, China
Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)
Source title:Applied Physics B: Lasers and Optics
Abbreviated source title:Appl Phys B
Volume:123
Issue:4
Issue date:April 1, 2017
Publication year:2017
Article number:135
Language:English
ISSN:09462171
CODEN:APBOEM
Document type:Journal article (JA)
Publisher:Springer Verlag
Abstract:We have developed an ultra-short wavelength operation of all-fiber Tm-doped laser system, in which the laser system was structured in a FBGs based linear cavity with FBG associated bidirectional pump mechanism at 1550 nm. The laser yielded 3.15 W of continuous-wave output at 1706.75 nm with a narrow-linewidth of ~50 pm. A high reflectivity FBG (HR-FBG) at 1550 nm was used to reflect the residual pump light and achieve the bidirectional pump mechanism. The maximum slope efficiency was improved from 23.2% without HR-FBG to 42.1% with HR-FBG at 1550 nm and the lowest pump threshold was reduced from 1.6 to 0.8 W accordingly. In the experiment, we have also investigated the dependencies of the slope efficiencies and pump threshold of the laser versus the length of active fiber and reflectivity of the output mirror (FBG) in detail. It is indisputable that the development of 1.7 μm silicate fiber lasers with Watt-level output power will open up a number of promising application windows. 2017, Springer-Verlag Berlin Heidelberg.
Number of references:26
Main heading:Pumping (laser)
Controlled terms:Efficiency - Fiber lasers - Fibers - Laser mirrors - Reflection - Silica - Silicates - Thulium
Uncontrolled terms:Bidirectional pumping - Continuous Wave - High reflectivity - Narrow-line width - Output mirrors - Short wavelengths - Silicate fibers - Slope efficiencies
Classification code:547.2 Rare Earth Metals - 744 Lasers - 913.1 Production Engineering
Numerical data indexing:Percentage 2.32e+01%, Percentage 4.21e+01%
DOI:10.1007/s00340-017-6713-z
Funding details: Number: 2015JQ5141, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61475189, Acronym: -, Sponsor: National Aerospace Science Foundation of China;Number: 61405241, Acronym: -, Sponsor: National Aerospace Science Foundation of China;
Funding text:This work was financially supported by the West Light Foundation from Chinese Academy of Sciences (CAS), the National Nature Science Foundation of China (Grants Nos. 61475189 and 61405241), and Natural Science Basic Research Project in Shaanxi Province (Grants No 2015JQ5141).

Database:Compendex
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<314>

Accession number:20170603336337
Title:Real-time image haze removal using an aperture-division polarimetric camera
Authors:Zhang, Wenfei (1, 2, 3); Liang, Jian (1, 3); Ren, Liyong (1); Ju, Haijuan (1, 3); Qu, Enshi (1); Bai, Zhaofeng (1); Tang, Yao (4); Wu, Zhaoxin (2)
Author affiliation:(1) Research Department of Information Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Department of Electronics Science and Technology, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Xi'an University of Posts and Telecommunication, Xi'an; 710121, China
Corresponding author:Ren, Liyong(renliy@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:56
Issue:4
Issue date:February 1, 2017
Publication year:2017
Pages:942-947
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:Polarimetric dehazing methods have been proven to be effective in enhancing the quality of images acquired in turbid media. We report a new full-Stokes polarimetric camera, which is based on the division of aperture structure. We design a kind of automatic polarimetric dehazing algorithm and load it into the field programmable gate array (FPGA) modules of our designed polarimetric camera, achieving a real-time image haze removal with an output rate of 25 fps. We demonstrate that the image quality can be significantly improved together with a good color restoration. This technique might be attractive in a range of real-time outdoor imaging applications, such as navigation, monitoring, and remote sensing. 2017 Optical Society of America.
Number of references:29
Main heading:Image enhancement
Controlled terms:Cameras - Demulsification - Field programmable gate arrays (FPGA) - Polarimeters - Remote sensing
Uncontrolled terms:Color restoration - Dehazing - Haze removal - Imaging applications - Output rate - Real time - Real time images - Turbid media
Classification code:721.2 Logic Elements - 742.2 Photographic Equipment - 802.3 Chemical Operations - 941.3 Optical Instruments
DOI:10.1364/AO.56.000942
Funding details: Number: 61535015, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61505246, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61275149, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (61505246, 61275149, 61535015).

Database:Compendex
Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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Accession number:20171403529431
Title:Effect of thermally induced birefringence on performance of KDP electro-optics crystal with rectangular shape
Authors:Yin, Xingliang (1); Jiang, Menghua (1); Sun, Zhe (2); Hui, Yongling (1); Lei, Hong (1); Li, Qiang (1)
Author affiliation:(1) Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China; (2) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China
Corresponding author:Jiang, Menghua(jmh@bjut.edu.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:56
Issue:10
Issue date:April 1, 2017
Publication year:2017
Pages:2893-2900
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:In this paper, we present what we believe is the first demonstration of a new rectangular KDP crystal as an electro-optic switch and calculations of the stress-induced birefringence and depolarization loss in the crystal. We simulated and experimentally demonstrate the thermal depolarization loss of crystal in both cylindrical and rectangular shape. The results show that by using a rectangular KDP crystal, the effects of the thermally induced birefringence and depolarization can be lessened. 2017 Optical Society of America.
Number of references:13
Main heading:Birefringence
Controlled terms:Depolarization
Uncontrolled terms:Electro-optic switch - Rectangular shapes - St