Record 1 of 42

Title: The near- and mid-infrared emission properties of Tm<SUP>3+</SUP>-doped GeGaS-CsI chalcogenide glasses

Author(s): Dai, SX (Dai Shixun); Peng, B (Peng Bo); Zhang, PJ (Zhang Pengjun); Xu, TF (Xu Tiefeng); Xunsi, W (Xunsi Wang); Nie, QH (Nie Qiuhua); Zhang, XH (Zhang Xianghua)

Source: JOURNAL OF NON-CRYSTALLINE SOLIDS  Volume: 356  Issue: 44-49  Special Issue: SI  Pages: 2424-2428  DOI: 10.1016/j.jnoncrysol.2010.03.020  Published: OCT 1 2010  

Abstract: Serials of chalcogenide glasses based on composition of 72GeS(2)-18Ga(2)S(3)-10CsI (in mol%) and doped with high Tm3+ content (up to 10,000 ppm) were prepared, and their luminescence properties were investigated under excitation with 800 nm laser. The influences of doping concentration on Judd-Ofelt intensity parameter Omega(i) spontaneous transition probability A, fluorescence branching ratio beta, and radiative lifetime tau(rad) of Tm3+ in the samples were studied. Four infrared emission bands observed were centered at 1.48, 1.8, 2.3, and 3.8 mu m, corresponding to optical transitions H-3(4) -> F-3(4), F-3(4) -> H-3(6), H-3(4) -> H-3(5) and H-3(5) -> F-3(4), respectively. For 1.0 wt.% Tm3+: doped sample, no concentration quenching was observed and its emission cross-sections at 2.3 and 3.8 mu m calculated by using Fuchtbauer-Ladenburg equation were 6.85 x 10(-21) and 7.66 x 10(-21) cm(-2), respectively. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000285282100029

Conference Title: 12th International Conference on the Physics of Non-Crystalline Solids (PNCS12)

Conference Date: SEP 06-09, 2009

Conference Location: Foz do Iguacu, BRAZIL

Author Identifiers:

ISSN: 0022-3093

eISSN: 1873-4812

Record 2 of 42

Title: Linear and nonlinear optical properties of the PbSe quantum dots doped germano-silica glass optical fiber

Author(s): Watekar, PR (Watekar, Pramod R.); Ju, S (Ju, Seongmin); Lin, AX (Lin, Aoxiang); Kim, MJ (Kim, Myoung Jin); Lee, BH (Lee, Byeong Ha); Han, WT (Han, Won-Taek)

Source: JOURNAL OF NON-CRYSTALLINE SOLIDS  Volume: 356  Issue: 44-49  Special Issue: SI  Pages: 2384-2388  DOI: 10.1016/j.jnoncrysol.2010.02.012  Published: OCT 1 2010  

Abstract: We report development of a new fiber doped with PbSe quantum dots for nonlinear optical applications. PbSe quantum dots related absorption peaks were obtained at 1021, 1093 and 1351 nm. The resonant optical nonlinearity and attenuation at 1500 nm were measured to be 9.4 x 10(-16) m(2)/W and 0.01 dB/m, respectively. The emission around 1540 nm was observed upon near resonant pumping at 1064 nm. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000285282100020

Conference Title: 12th International Conference on the Physics of Non-Crystalline Solids (PNCS12)

Conference Date: SEP 06-09, 2009

Conference Location: Foz do Iguacu, BRAZIL

Author Identifiers:

ISSN: 0022-3093

eISSN: 1873-4812

Record 3 of 42

Title: Separating misalignment from misfigure in stigmatic null tests of conic mirrors

Author(s): Chen, QF (Chen Qinfang); Ma, Z (Ma Zhen); Li, YC (Li Yingcai); Li, XY (Li Xuyang)

Edited by: Wang Y; Bentley J; Du C; Tatsuno K; Urbach HP

Source: OPTICAL DESIGN AND TESTING IV  Book Series: Proceedings of SPIE-The International Society for Optical Engineering  Volume: 7849  Article Number: 784909  DOI: 10.1117/12.869784  Published: 2010  

Abstract: Null testing of off-axis conic surface at the pair of conjugate foci can add sensitivity resulting from double pass off the test piece. However, the alignment procedure of the test is difficult. The main reason is that the return wavefront from off-axis aspheric surface is not rotationally symmetric so that the observer cannot tell if the wavefront asymmetries are due to surface or misalignment errors. In this paper, we analyze the effect of misalignments on test results with the optical path method, and derive an equation for misalignment-induced aberrations. Next we present an optimum method for the removal of alignment errors. As an example the method is applied to the alignment of an off-axis mirror. After several alignments, a misaligned test system giving 0.093 lambda rms wavefront error can be adjusted to 0.024 lambda, at 0.6328 microns.

Accession Number: WOS:000287704000008

Conference Title: Conference on Optical Design and Testing IV

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

ISBN: 978-0-8194-8379-9

Record 4 of 42

Title: Real-Time Compression System Research Based On DMD Hadamard Transform Spectrometer

Author(s): Fan, XY (Fan, Xianyun); Hu, BL (Hu, Bingliang); Li, ZT (Li, Zitian); Chen, XL (Chen, Xiaolai); Han, YJ (Han, Yajuan)

Edited by: Li M; Yu D

Source: 2010 SYMPOSIUM ON SECURITY DETECTION AND INFORMATION PROCESSING  Book Series: Procedia Engineering  Volume: 7  Pages: 297-303  DOI: 10.1016/j.proeng.2010.11.048  Published: 2010  

Abstract: We propose a new lossy compression approach for hyperspectral images which comes from hadamard transform (HT) spectral imager for space-based surveillance that uses the Digital Micro-mirror Device (DMD) as the programmable mask other than the conventional mechanical mask. This paper firstly introduces that the DMD Hadamard spectrometer described in this paper is good at obtaining multi-channel high-energy high-SNR spectral data, which is superior to traditional ones. And then, based on the hardware platform composed of Xilinx FPGA and ADV212 (a codec chip for special JPEG2000), the sampled image data was then compressed with high SNR, high-resolution compression ratio. Last, we show the experimental results which demonstrate that the PSNR is up to 47.3dB and make no significant distortion for vision. Obviously, this approach takes distinguished advantages on real-time ability, image distortion and the practical value. The design can be utilized in national defense, earth resource survey aerospace, environmental disaster monitoring and other fields. (c) 2010 Published by Elsevier Ltd.

Accession Number: WOS:000287143100048

Conference Title: 2010 Symposium on Security Detection and Information Processing

Conference Date: 2010

Conference Location: PEOPLES R CHINA

ISSN: 1877-7058

Record 5 of 42

Title: Experimental research for broadband spatial heterodyne spectroscopy

Author(s): Feng, YT (Feng, Yutao); Bai, QL (Bai, Qinglan); Yan, P (Yan, Peng); Hu, BL (Hu, Bingliang); Wen, DS (Wen, Desheng)

Edited by: Yoshizawa T; Wei P; Zheng J; Shimura T

Source: OPTOELECTRONIC IMAGING AND MULTIMEDIA TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 7850  Article Number: 78501U  DOI: 10.1117/12.870229  Published: 2010  

Abstract: Spatial heterodyne spectrometers have been used in multiple scientific studies since their invention and early development. Broadband spatial heterodyne spectrometers also have the advantages of large etendue, high spectral resolving powers, and high data collection rates as traditional spatial heterodyne spectrometer. Basic theory, design and performance parameters, breadboard experiment for a broadband, high-resolution spatial heterodyne spectrometer are reported. The experimental spatial heterodyne spectrometer achieves a design resolution 0.39cm-1. Firstly, it is demonstrated that broadband spatial heterodyne spectrometer have the advantages of wide spectral coverage and high spectral resolving power simultaneously; secondly, the effects of optical defects on the system are discussed; thirdly, Two dimension interference data procession also is mentioned.

Accession Number: WOS:000287705000051

Conference Title: Conference on Optoelectronic Imaging and Multimedia Technology

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8380-5

Record 6 of 42

Title: An Image Quality Assessment Metric with No Reference Using Hidden Markov Tree Model

Author(s): Gao, F (Gao, Fei); Gao, XB (Gao, Xinbo); Lu, W (Lu, Wen); Tao, DC (Tao, Dacheng); Li, XL (Li, Xuelong)

Edited by: Frossard P; Li H; Wu F; Girod B; Li S; Wei G

Source: VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2010  Book Series: Proceedings of SPIE  Volume: 7744  Article Number: 774410  DOI: 10.1117/12.862433  Published: 2010  

Abstract: No reference (NR) method is the most difficult issue of image quality assessment (IQA), which does not need the original image or its features as reference and only depends on the statistical law of the natural images. So, the NR-IQA is a high -level evaluation for image quality and simulates the complicated subjective process of human beings. This paper presents a NR-IQA metric based on Hidden Markov Tree (HMT) model. First, the HMT is utilized to model natural images, and the statistical properties of the model parameters are analyzed to mimic variation of image degradation. Then, by estimating the deviation degree of the parameters from the statistical law the distortion metric is constructed. Experimental results show that the proposed image quality assessment model is consistent well with the subjective evaluation results, and outperforms the existing models on difference distortions.

Accession Number: WOS:000394606500035

Conference Title: Conference on Visual Communications and Image Processing (VCIP)

Conference Date: JUL 11-14, 2010

Conference Location: Univ Sci & Technol China, Huangshan, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Microsoft Res Asia, IEEE Circuits & Syst Soc, Natl Nat Sci Fdn China, Huawei Technologies Co Ltd

Conference Host: Univ Sci & Technol China

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8234-1

Record 7 of 42

Title: Spatio-temporal Salience Based Video Quality Assessment

Author(s): Gao, XB (Gao, Xinbo); Liul, N (Liul, Ni); Lui, W (Lui, Wen); Tao, DC (Tao, Dacheng); Li, XL (Li, Xuelong)

Book Group Author(s): IEEE

Source: IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010)  Book Series: IEEE International Conference on Systems Man and Cybernetics Conference Proceedings  Published: 2010  

Abstract: It is important to design an effective and efficient objective metric of the video quality in video processing areas. The most reliable way is subjective evaluation, thus the most reasonable objective metric should adequately consider characteristics of the human visual system (HVS). Visual attention (VA) is one of the essential visual phenomena of HVS, the realization of which relies on the saliency of visual field. Moreover, the saliency of visual field has a great influence on recognition, memorization and subjective evaluation of the image. This paper explores the saliency of visual field for objective quality assessment of videos. The proposed method first uses the VA model to obtain visual saliency map of the distorted video, including color, intensity and motion. Then the salient map is used to weight a structural similarity map between the original and distorted videos to get the final value of the video quality. Experimental results prove that the proposed method achieves a good correlation with subjective valuation.

Accession Number: WOS:000295015300081

Conference Title: IEEE International Conference on Systems, Man and Cybernetics

Conference Date: OCT 10-13, 2010

Conference Location: Istanbul, TURKEY

Conference Sponsors: IEEE

Author Identifiers:

ISSN: 1062-922X

ISBN: 978-1-4244-6588-0

Record 8 of 42

Title: Image Quality Assessment and Human Visual System

Author(s): Gao, XB (Gao, Xinbo); Lu, W (Lu, Wen); Tao, DC (Tao, Dacheng); Li, XL (Li, Xuelong)

Edited by: Frossard P; Li H; Wu F; Girod B; Li S; Wei G

Source: VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2010  Book Series: Proceedings of SPIE  Volume: 7744  Article Number: 77440Z  DOI: 10.1117/12.862431  Published: 2010  

Abstract: This paper summaries the state-of-the-art of image quality assessment (IQA) and human visual system (HVS). IQA provides an objective index or real value to measure the quality of the specified image. Since human beings are the ultimate receivers of visual information in practical applications, the most reliable IQA is to build a computational model to mimic the HVS. According to the properties and cognitive mechanism of the HVS, the available HVS-based IQA methods can be divided into two categories, i.e., bionics methods and engineering methods. This paper briefly introduces the basic theories and development histories of the above two kinds of HVS-based IQA methods. Finally, some promising research issues are pointed out in the end of the paper.

Accession Number: WOS:000394606500034

Conference Title: Conference on Visual Communications and Image Processing (VCIP)

Conference Date: JUL 11-14, 2010

Conference Location: Univ Sci & Technol China, Huangshan, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Microsoft Res Asia, IEEE Circuits & Syst Soc, Natl Nat Sci Fdn China, Huawei Technologies Co Ltd

Conference Host: Univ Sci & Technol China

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8234-1

Record 9 of 42

Title: A new fluid state laser system realizes laser output

Author(s): Gui, L (Gui Luo); Hou, CQ (Hou Chaoqi); Peng, B (Peng Bo); Fan, DY (Fan Dianyuan)

Edited by: Singh UN; Fan D; Yao J; Walter RF

Source: HIGH-POWER LASERS AND APPLICATIONS V  Book Series: Proceedings of SPIE  Volume: 7843  Article Number: 78431I  DOI: 10.1117/12.870197  Published: 2010  

Abstract: This article demonstrates a diode-pumped pulse laser operation in a flowing fluid host containing Nd-glass particles, transversely pumped by 810nm laser diodes. A series of Laser pulse as the output are observed. The repetition frequency is 1Hz, and the pulse width is about 100 mu s, and the maximum pulse energy is up to 2.93mJ, and the average pulse energy is 0.84mJ. Given that fluid circulation offers improved heat management, the realization of laser output of this new fluid state laser verifies a practical way to solve the heat-induced problems in high energy laser systems.

Accession Number: WOS:000287765300042

Conference Title: Conference on High-Power Lasers and Applications V

Conference Date: OCT 18-19, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, COS-Chinese Opt Soc

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8373-7

Record 10 of 42

Title: Novel method to examine phase object by the use of TFT-LCD

Author(s): Guo, RL (Guo, Rongli); Yao, BL (Yao, Baoli); Han, J (Han, Jun); Yu, X (Yu, Xun); Nie, LA (Nie, Liang); Duan, CL (Duan, Cunli); Wang, F (Wang, Fan)

Edited by: Zhang Y; Sasian JM; Xiang L; To S

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 7656  Article Number: 76563D  DOI: 10.1117/12.866452  Published: 2010  

Abstract: A novel method of using Thin Film Transistor-Liquid Crystal Display(TFT-LCD) as phase filter in Zernike phase contrast method is introduced. First, theoretical analysis of using TFT-LCD as programmable phase modulator instead of conventional phase contrast plate to filter the spectrum is conducted. Then the phase modulation property curve of the used TFT-LCD is measured which is function of gray scales in modified Mach-Zehnder interferometer, and frequency filtering is used to eliminate interferogram's noise and the correlation method is adopted to determine the mini-displacement of interference fringe. At last, Experiment conducted in 4F system. The result showed that the method is effective in qualitative observation of phase distribution for a small phase object.

Accession Number: WOS:000287797800121

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optical Test and Measurement Technology and Equipment

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-8194-8086-6

Record 11 of 42

Title: Eight-channel Fourier transform computer generated holograms

Author(s): Guo, RL (Guo, Rongli); Yao, BL (Yao, Baoli); Han, J (Han, Jun); Lu, SJ (Lu, Shaojun); Duan, CL (Duan, Cunli); Wang, F (Wang, Fan)

Edited by: Sheng Y; Yu C; Chen L

Source: HOLOGRAPHY, DIFFRACTIVE OPTICS, AND APPLICATIONS IV  Book Series: Proceedings of SPIE  Volume: 7848  Article Number: 784839  DOI: 10.1117/12.871674  Published: 2010  

Abstract: A method of encoding eight objects simultaneously in a detour computer generated hologram(CGH) is proposed. In the method, we divide eight objects into two groups and multiple objects are encoded through synthesized spectrum. The simulation demonstrated the effectiveness of the method. In the reconstruction two groups of objects were reconstructed around the same diffraction order along x , y directions, respectively. The result showed that the method can improve the information capacity in a CGH efficiently.

Accession Number: WOS:000287702800097

Conference Title: Conference on Holography, Diffractive Optics, and Applications IV

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8378-2

Record 12 of 42

Title: An optimization detection angle for polarization measurement

Author(s): Jian, XH (Jian, Xiaohua); Zhang, CM (Zhang, Chunmin); Zhao, BC (Zhao, Baochang)

Edited by: Butler JJ; Xiong X; Gu X

Source: EARTH OBSERVING SYSTEMS XV  Book Series: Proceedings of SPIE  Volume: 7807  Article Number: 780717  DOI: 10.1117/12.859422  Published: 2010  

Abstract: Based on the basic theory of polarization measurement, this paper compares the differences between two detection angles: 45 degrees and 60 degrees, which are generally used in rotating polarization elements method for polarization measurement. Sequentially, an optimization detection angle is present, and it provides a better angle choice for polarization measurements which could obviously improve the polarization measurement accuracy and effectively reduce the influence of rotation errors to the degree of polarization.

Accession Number: WOS:000285840600030

Conference Title: Conference on Earth Observing Systems XV

Conference Date: AUG 02-05, 2010

Conference Location: San Diego, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8303-4

Record 13 of 42

Title: Identifying Camera and Processing from Cropped JPEG Photos via Tensor Analysis

Author(s): Li, WH (Li, Weihai); Yu, NH (Yu, Nenghai); Yuan, Y (Yuan, Yuan)

Book Group Author(s): IEEE

Source: IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010)  Book Series: IEEE International Conference on Systems Man and Cybernetics Conference Proceedings  Published: 2010  

Abstract: Digital image and video forensics is to detect the authenticity of digital images/videos. So far, existing algorithms are designed by exploring one or several special features, which usually result in limited performance and applicability. With the perspective of entire procedure including image acquisition and image processing, a theory of general blind image forensics is proposed in this paper. Then a new blind image forensic method is designed based on this theory to identify camera source and processing history of cropped compressed digital images. In this method, tensor decomposition analysis is applied to extract features of nonlinear operations, which come from both algorithms embedded within camera and operations done by post-software. Then, the Support Vector Machine is utilized to classify whether the target image is captured by the claimed camera and underwent the declared processing history. Experimental results show that this method has high detection accuracy, which demonstrated that our theory is correct.

Accession Number: WOS:000295015304017

Conference Title: IEEE International Conference on Systems, Man and Cybernetics

Conference Date: OCT 10-13, 2010

Conference Location: Istanbul, TURKEY

Conference Sponsors: IEEE

Author Identifiers:

ISSN: 1062-922X

ISBN: 978-1-4244-6588-0

Record 14 of 42

Title: A New Continuous Wave 2500W Semiconductor Laser Vertical Stack

Author(s): Li, XN (Li, Xiaoning); Peng, CH (Peng, Chenhui); Zhang, YX (Zhang, Yanxin); Wang, JW (Wang, Jingwei); Xiong, LL (Xiong, Lingling); Zhang, P (Zhang, Pu); Liu, XS (Liu, Xingsheng)

Edited by: Bi K; Yang Y; Dong G

Source: 2010 11TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY & HIGH DENSITY PACKAGING (ICEPT-HDP)  Pages: 1350-1354  Published: 2010  

Abstract: With the increasing applications of high power semiconductor lasers in industrial, advanced manufacturing, military, aerospace, medical systems, display, entertainment. etc., semiconductor lasers with high power and high performances are required. The performance of semiconductor lasers is greatly affected by packaging structure, packaging process and beam shaping. In this work, a high power semiconductor laser vertical stack was successfully fabricated. A series of techniques such as spectrum control and beam control were used to achieve marrow spectrum and high beam quality. The performances of the semiconductor laser vertical stack were characterized. A high power of 2500 W, a narrow spectrum of 3.11 nm and an excellent rectangular beam shape were obtained. The lifetime of the vertical stack laser was tested as well.

Accession Number: WOS:000328124000289

Conference Title: 11th International Conference on Electronic Packaging Technology and High Density Packaging (ICEPT-HDP)

Conference Date: AUG 16-19, 2010

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Chinese Inst Elect, Elect Mgf & Packaging Technol Soc, IEEE Component, Packaging, & Mgf Technol Soc, Xidian Univ, Beijing Faith Consulting Co Ltd

Author Identifiers:

ISBN: 978-1-4244-8142-2

Record 15 of 42

Title: A Novel Image Quality Metric Based on Morphological Component Analysis

Author(s): Li, XL (Li, Xuelong); He, LH (He, Lihuo); Lu, W (Lu, Wen); Gao, XB (Gao, Xinbo); Tao, DC (Tao, Dacheng)

Book Group Author(s): IEEE

Source: IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010)  Book Series: IEEE International Conference on Systems Man and Cybernetics Conference Proceedings  Published: 2010  

Abstract: Due to that human eye has different perceptual characteristics for different morphological components, so a novel image quality metric is proposed by incorporating morphological component analysis (MCA) and human visual system (HVS), which is capable of assessing the image with different types of distortion. Firstly, reference and distorted images are decomposed into texture and cartoon components by MCA respectively. Then these components are changed into perceptual features by just noticeable difference (JND) which integrates masking features, luminance adaptation and contrast sensitive function (CSF). Finally, the difference between reference and distorted images' perceptual features is quantified using a pooling strategy, and then the final result of the image quality is obtained. Experimental results demonstrate that the performance of the metric prevail over some existing methods on LIVE database II.

Accession Number: WOS:000295015300072

Conference Title: IEEE International Conference on Systems, Man and Cybernetics

Conference Date: OCT 10-13, 2010

Conference Location: Istanbul, TURKEY

Conference Sponsors: IEEE

Author Identifiers:

ISSN: 1062-922X

ISBN: 978-1-4244-6588-0

Record 16 of 42

Title: Analysis of bonding stress with high strength adhesive between the reflector and the mounts in space camera

Author(s): Li, Y (Li, Yan); Hu, YM (Hu, YongMing); Li, YC (Li, YingCai); Qu, YS (Qu, YouShan); Ding, JT (Ding, JiaoTeng)

Edited by: Jiang W; Cho MK; Wu F

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: LARGE MIRRORS AND TELESCOPES  Book Series: Proceedings of SPIE-The International Society for Optical Engineering  Volume: 7654  Article Number: 76541F  DOI: 10.1117/12.867760  Published: 2010  

Abstract: The bond stress is analyzed when the optics were attached to their mounts with high strength adhesive in space camera. The model was founded that a circular planar reflector supported by one, three, six or twelve adhesive points, which evenly distributed on different circles. The surface deformation of reflector is mainly caused by the shrinkage after solidity. The functional relation was deduced between the bonding force of the reflector and the characteristic dimension of the adhesive spot using piecewise function, and then analyzing the RMS error of no gravity assuming that the adhesive spot is fixed connect to the reflector using Nastran. The analytical RMS error was the aberration which added by solidification of adhesive. The calculation result is in good agreement with the experiment results. This analyzing method will be useful for the microstress clamping of high performance reflector system for application in space optical systems.

Accession Number: WOS:000287765500050

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Large Mirrors and Telescopes

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, IOE-Inst Opt Elec, SPIE

ISSN: 0277-786X

ISBN: 978-0-8194-8084-2

Record 17 of 42

Title: Spectrum acquisition of detonation based on CMOS

Author(s): Li, Y (Li Yan); Bai, YL (Bai Yonglin); Wang, B (Wang Bo); Liu, BY (Liu Baiyu); Xue, YD (Xue Yingdong); Zhang, W (Zhang Wei); Gou, YS (Gou Yongsheng); Bai, XH (Bai Xiaohong); Qin, JJ (Qin Junjun); Ouyang, XA (Ouyang Xian)

Edited by: Jiang Y; Kippelen B; Yu J

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTOELECTRONIC MATERIALS AND DEVICES FOR DETECTOR, IMAGER, DISPLAY, AND ENERGY CONVERSION TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 7658  Article Number: 76585C  DOI: 10.1117/12.865534  Published: 2010  

Abstract: The detection of high-speed dynamic spectrum is the main method to acquire transient information. In order to obtain the large amount spectral data in real-time during the process of detonation, a CMOS-based system with high-speed spectrum data acquisition is designed. The hardware platform of the system is based on FPGA, and the unique characteristic of CMOS image sensors in the rolling shutter model is used simultaneously. Using FPGA as the master control chip of the system, not only provides the time sequence for CIS, but also controls the storage and transmission of the spectral data. In the experiment of spectral data acquisition, the acquired information is transmitted to the host computer through the CameraLink bus. The dynamic spectral curve is obtained after the subsequent processing. The experimental results demonstrate that this system is feasible in the acquisition and storage of high-speed dynamic spectrum information during the process of detonation.

Accession Number: WOS:000287802500192

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-8194-8088-0

Record 18 of 42

Title: Excitonic optical absorption in quantum wells under intense terahertz waves polarized along the grown-direction

Author(s): Li, Y (Li, Ying); Zhang, TY (Zhang, Tong-Yi)

Edited by: Zhang C; Zhang XC; Siegel PH; He L; Shi SC

Source: INFRARED, MILLIMETER WAVE, AND TERAHERTZ TECHNOLOGIES  Book Series: Proceedings of SPIE  Volume: 7854  Article Number: 78542O  DOI: 10.1117/12.868906  Published: 2010  

Abstract: Excitonic optical absorption in quantum wells (QWs) under intense terahertz (THz) waves polarized along the grown-direction is investigated. The characteristics induced by the strong THz field in the optical absorption spectrum in the QWs near the band gap edge is analyzed by coherent wave approach. The calculated results with and without the presence of THz field are presented. It shows that the excitonic absorption peaks may split or broaden when an intense THz field is applied. The presence of an intense THz field results in the formation of replicas in the absorption spectrum. The replicas are not symmetric and presence on both sides of the main excitonic peaks due to the Coulomb interaction between electrons and holes.

Accession Number: WOS:000287662100068

Conference Title: Conference on Infrared, Millimeter Wave, and Terahertz Technologies

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8384-3

Record 19 of 42

Title: Design of a four-mirror optical system with wide field of view

Author(s): Liang, ST (Liang Shi-tong); Yang, JF (Yang Jian-feng); Xue, B (Xue Bin); Ruan, P (Ruan Ping)

Edited by: Wang Y; Bentley J; Du C; Tatsuno K; Urbach HP

Source: OPTICAL DESIGN AND TESTING IV  Book Series: Proceedings of SPIE  Volume: 7849  Article Number: 784930  DOI: 10.1117/12.871717  Published: 2010  

Abstract: Reflective optics is used widely in space optical systems for their achromatization, large aperture and lightweight compared with refractive systems. Four-mirror system especially off-axis system is desired for its excellent imaging performance and compact structure. Aberration theory of coaxial four-mirror system based on PW method is analyzed and the design procedure is proposed to get the initial four-mirror system in this paper. A large field off-axis four-mirror system is designed based on the theory and the design process. The system contains four conic aspheric mirrors. It has a 2 degrees x0.32 degrees rectangular field of view. The MTF of the system is diffraction-limited and the distortion is less than 0.1%. The structure of the system is compact and the ratio of total axis length to focal length is about 1/3.9. The excellent imaging performance and compact structure make it adaptable to space remote sensing systems.

Accession Number: WOS:000287704000082

Conference Title: Conference on Optical Design and Testing IV

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-8194-8379-9

Record 20 of 42

Title: A New Quality Metric for Compressed Images based on DDCT

Author(s): Lu, W (Lu, Wen); Li, J (Li, Jing); Tao, DC (Tao, Dacheng); Gao, XB (Gao, Xinbo); Li, XL (Li, Xuelong)

Edited by: Frossard P; Li H; Wu F; Girod B; Li S; Wei G

Source: VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2010  Book Series: Proceedings of SPIE  Volume: 7744  Article Number: 77440C  DOI: 10.1117/12.862432  Published: 2010  

Abstract: As the performance-indicator of the image processing algorithms or systems, image quality assessment (IQA) has attracted the attention of many researchers. Aiming to the widely used compression standards, JPEG and JPEG2000, we propose a new no reference (NR) metric for compressed images to do IQA. This metric exploits the causes of distortion by JPEG and JPEG2000, employs the directional discrete cosine transform (DDCT) to obtain the detail and direction information of the images and incorporates with the visual perception to obtain the image quality index. Experimental results show that the proposed metric not only has outstanding performance on JPEG and JPEG2000 images, but also applicable to other types of artifacts.

Accession Number: WOS:000394606500011

Conference Title: Conference on Visual Communications and Image Processing (VCIP)

Conference Date: JUL 11-14, 2010

Conference Location: Univ Sci & Technol China, Huangshan, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Microsoft Res Asia, IEEE Circuits & Syst Soc, Natl Nat Sci Fdn China, Huawei Technologies Co Ltd

Conference Host: Univ Sci & Technol China

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8234-1

Record 21 of 42

Title: New Scheme of Sagnac Interferometric Fiber-Optic Current Sensor Insensible to Mechanical Vibration

Author(s): Mu, J (Mu, Jie); Zhao, W (Zhao, Wei); Wang, J (Wang, Jia); Xu, JT (Xu, Jin-tao)

Edited by: Zhang Y; Sasian JM; Xiang L; To S

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 7656  Article Number: 76563W  DOI: 10.1117/12.863862  Published: 2010  

Abstract: A new scheme of Sagnac interferometer fiber-optic current sensor insensible to mechanical vibration is presented. This scheme eliminates the Sagnac effect, which is responsible for the sensitivity to vibration according to theoretical analysis with Jones matrix. The improvement to the conventional Sagnac interferometer fiber-optic current sensor is achieved by changing the structure of sensing fiber coil. This coil is fabricated by the bifilar winding technique, and it consists of one half-wave plate embedded in the middle of sensing optical fiber and one quarter-wave plate rotated by 90 degrees in its lower input port. Experimental results suggest that, compared to the conventional design, this new-structured Sagnac interferometer fiber-optic current sensor has much better performance against strong mechanical vibration at accelerations up to 20 g and frequencies from 10 to 400 Hz. Furthermore, the current measurement accuracy of the improved fiber-optic current sensor achieves the 0.2-level at an acceleration of 20 g and a frequency of 150 Hz.

Accession Number: WOS:000287797800140

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optical Test and Measurement Technology and Equipment

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8086-6

Record 22 of 42

Title: A High Power Light Emitting Diode Module for Projection Display Application

Author(s): Peng, CH (Peng, Chenhui); Li, XN (Li, Xiaoning); Wang, JW (Wang, Jingwei); Xiong, LL (Xiong, Lingling); Zhang, YX (Zhang, Yanxin); Liu, XS (Liu, Xingsheng)

Edited by: Bi K; Yang Y; Dong G

Source: 2010 11TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY & HIGH DENSITY PACKAGING (ICEPT-HDP)  Pages: 1412-1416  Published: 2010  

Abstract: Light emitting diode (LED) has numerous advantages such as long lifetime, large color gamut, small size and the absence of mercury vapor. In recent years, there has been recognition that LED could be an alternative light source for projection display application. In this work, dielectric compound parabolic concentrators (CPCs) were designed and optimized for multiple-LED array packaging structure for projection display application. The performance of rectangular CPC was studied and compared to theoretical simulations. Rectangular CPC was fabricated as the collector and collimator. A high power green LED module combined with rectangular CPC was fabricated and its performance was characterized. More than 90% light emitted by multiple-LED array can be collected by the CPC and transmit within the designed angle. A high power of 2.09W and a high luminous flux of 800 lm were obtained.

Accession Number: WOS:000328124000302

Conference Title: 11th International Conference on Electronic Packaging Technology and High Density Packaging (ICEPT-HDP)

Conference Date: AUG 16-19, 2010

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Chinese Inst Elect, Elect Mgf & Packaging Technol Soc, IEEE Components, Packaging, & Mfg Technol Soc, Xidian Univ, Beijing Faith Consulting Co Ltd

Author Identifiers:

ISBN: 978-1-4244-8142-2

Record 23 of 42

Title: Spatial and temporal evolution of transient stimulated-Brillouins-cattering slow-light pulse in an optical fiber

Author(s): Ren, LY (Ren, Liyong); Yang, YL (Yang, Yanlong); Zhao, W (Zhao, Wei); Tomita, Y (Tomita, Yasuo)

Edited by: Shahriar SM; Hemmer PR

Source: ADVANCES IN SLOW AND FAST LIGHT III  Book Series: Proceedings of SPIE  Volume: 7612  Article Number: 761207  DOI: 10.1117/12.840631  Published: 2010  

Abstract: Slow-light technology via stimulated Brillouin scattering (SBS) in an optical fiber has attracted a lot of attention owing to its flexible gain spectrum tailoring capacity, good compatibility with existing telecommunication systems, and great application for photonic switchers and routers in ultra-high-speed photonic networks. In this paper we present a general theoretical model for analyzing the dynamic behavior of the nonlinear interactions of the transient SBS process based on the three-wave coupled-amplitude equations for the pump, Stokes and acoustic waves. Spatial and temporal evolution of a generating slow-light pulse with the duration of sub-nanosecond under double broadband pump case is accurately simulated owing to the fact that our model includes the second-order derivative of the acoustic field. We conclude that the origin of the pulse broadening and distortion can be explained in terms of the temporal decay of the induced acoustic field.

Accession Number: WOS:000284309300003

Conference Title: Conference on Advances in Slow and Fast Light III

Conference Date: JAN 25-26, 2010

Conference Location: San Francisco, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8008-8

Record 24 of 42

Title: Narrow linewidth and widely tunable operation of Tm-doped fiber laser with Volume Bragg gratings

Author(s): Shen, DY (Shen, Deyuan); Wang, YS (Wang, Yishan); Zhao, W (Zhao, Wei); Long, JY (Long, Jingyu); Li, C (Li, Cheng); Duan, KL (Duan, Kailiang)

Edited by: Singh UN; Fan D; Yao J; Walter RF

Source: HIGH-POWER LASERS AND APPLICATIONS V  Book Series: Proceedings of SPIE  Volume: 7843  Article Number: 784302  DOI: 10.1117/12.870061  Published: 2010  

Abstract: High power and widely tunable operation of Tm-doped silica fiber laser around 2 mu m has been demonstrated using volume Bragg grating as the wavelength selection and spectrum narrowing element. The operating wavelength was continuously tunable from 1930 to 1821 nm, with > 52 W output power over a tuning range of 104 nm and a relatively narrow spectra width of < 15 pm. Over 60.8 W of diffraction limited (M-2 similar to 1.5) CW output power was generated for 137 W of launched pump power, corresponding to a slope efficiency with respect to launched pump power of 46%. Output characteristics with a conventional replica diffraction grating for wavelength selection were also investigated as a comparison with that of using a volume Bragg grating. A maximum output power of 30.6 W at 1963 nm was generated for 79 W of launched pump power and the lasing wavelength could be tuned over 196 nm from 1859 to 2055 nm at output power levels in excess of 20 W. The bandwidth of the laser output was similar to 0.8 nm.

Accession Number: WOS:000287765300001

Conference Title: Conference on High-Power Lasers and Applications V

Conference Date: OCT 18-19, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, COS-Chinese Opt Soc

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-8194-8373-7

Record 25 of 42

Title: New method to improve measurement accuracy of modulation transfer function

Author(s): Song, ZX (Song, Zongxi); Gao, W (Gao, Wei); Zhou, Y (Zhou, Yan); Liu, F (Liu, Feng)

Edited by: Zhang Y; Sasian JM; Xiang L; To S

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 7656  Article Number: 76561N  DOI: 10.1117/12.867707  Published: 2010  

Abstract: Modulation transfer function (MTF) of optical systems is often derived by taking Fourier transform (FT) of a measured line spread function (LSF). During MTF measurement process, the measurement accuracy of MTF will decrease as a result when LSF computed is not veracity. Based on the model constructed using the variance information of knife-edge and skew of the knife-edge, this paper presents a new method to improve the accuracy of measurement of MTF. The results showed that the new method can improve the accuracy of MTF to 0.01.

Accession Number: WOS:000287797800059

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optical Test and Measurement Technology and Equipment

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-8194-8086-6

Record 26 of 42

Title: Theodolite Self-stabilization Tracking Servo System Based on Mobile Platform

Author(s): Chen, W (Wang Chen); Ma, CW (Ma Caiwen); Hao, W (Hao Wei); Tian, GY (Tian Guangyuan)

Edited by: Xu H

Source: 2ND IEEE INTERNATIONAL CONFERENCE ON ADVANCED COMPUTER CONTROL (ICACC 2010), VOL. 1  Pages: 98-102  DOI: 10.1109/ICACC.2010.5487052  Published: 2010  

Abstract: In order to improve the tracking and positioning accuracy of theodolite self-stabilization tracking based on mobile platform, the position of object is transformed from platform coordinate system to earth coordinate system by using coordinate axis circumrotation. A method of forecast tracking technique based on mobile platform is presented. The former compound angle is transform from platform coordinate to earth coordinate. The next compound angle is forecasted in earth coordinate, finally the forecast result is transform to the platform coordinate. The stable tracking technique based on mobile platform is realized. This forecast result is compared with direct forecast in platform coordinate. Tracking and positioning accuracy can be enhanced from 5' to 1.5', which fully prove that this forecast technique is more accurate and propitious to realize stable tracking on mobile platform.

Accession Number: WOS:000289200900021

Conference Title: 2nd IEEE International Conference on Advanced Computer Control

Conference Date: MAR 27-29, 2010

Conference Location: Shenyang, PEOPLES R CHINA

Conference Sponsors: IEEE

ISBN: 978-1-4244-5847-9

Record 27 of 42

Title: Packaging of High Power Semiconductor Laser Arrays Using a Novel Macro-channel Cooler

Author(s): Wang, JW (Wang, Jingwei); Yuan, ZB (Yuan, Zhenbang); Guo, L (Guo, Lu); Xiong, LL (Xiong, Lingling); Zhang, YX (Zhang, Yanxin); Peng, CH (Peng, Chenhui); Li, XN (Li, Xiaoning); Liu, XS (Liu, Xingsheng)

Edited by: Bi K; Yang Y; Dong G

Source: 2010 11TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY & HIGH DENSITY PACKAGING (ICEPT-HDP)  Pages: 92-97  DOI: 10.1109/ICEPT.2010.5582358  Published: 2010  

Abstract: High power semiconductor laser arrays have been widely used in many fields, such as pumping solid state laser aerospace, industry, medicine and display. For many applications, high power semiconductor lasers operating quasi-continuous wave (QCW) mode are demanded. For QCW laser, the output peak power is higher and average power is low. Therefore, the transient thermal density is very high. The most common method of removing the large amounts of waste heat in a semiconductor laser package is by using commercially-available copper micro-channel coolers (MCC). However, due to the coefficient of thermal expansion (CTE) mismatching between copper and laser chip, hard-solder cannot be directly used. On the other hand, indium solder has the problem of electro-thermal migration when the temperature grads were high in QCW mode. Furthermore, copper material is susceptible to erosion and corrosion. To overcome these hurdles in many applications, a novel macro channel cooler (MaCC) was presented in this work. The thermal behavior of MaCC-packaged high power semiconductor laser arrays in QCW mode was studied using finite element analysis (FEA). A high power of >250W QCW semiconductor laser array/bar using hard solder was fabricated. The performances of laser arrays, including output power, slope efficiency, threshold, conversion efficiency, spectral width, near field, lifetime etc. were characterized. The measured results indicated that the output power of a MaCC-packaged high power semiconductor laser array was very close to that of copper micro-channel cooler. Based on MaCC-packaged single laser array/bar, multiple-bar stack and two dimension area array lasers with output powers of several kilowatts and several tens of kilowatts were fabricated.

Accession Number: WOS:000328124000021

Conference Title: 11th International Conference on Electronic Packaging Technology and High Density Packaging (ICEPT-HDP)

Conference Date: AUG 16-19, 2010

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Chinese Inst Elect, Elect Mgf & Packaging Technol Soc, IEEE Components, Packaging, & Mfg Technol Soc, Xidian Univ, Beijing Faith Consulting Co Ltd

Author Identifiers:

ISBN: 978-1-4244-8142-2

Record 28 of 42

Title: Energy-Efficent Time Synchronization Algorithm for Wireless Sensor Networks

Author(s): Wu, WR (Wu, Wanrong); Wang, QP (Wang, Qianping); Wang, W (Wang, Wei); Su, YE (Su, Yu-e); An, Y (An, Yuan)

Edited by: Mahadevan V; Jianhong Z

Source: 2010 2ND INTERNATIONAL CONFERENCE ON COMPUTER AND AUTOMATION ENGINEERING (ICCAE 2010), VOL 1  Book Series: International Conference on Computer and Automation Engineering  Pages: 530-534  DOI: 10.1109/ICCAE.2010.5451889  Published: 2010  

Abstract: In wireless sensor networks, energy efficiency is an important standard for evaluating the effectiveness of the time synchronization protocols. Hence, energy should be conserved as much as possible provided that algorithm can achieve a certain accuracy. In this paper, we propose an energy efficient time synchronization algorithm in which each layer of the network can be synchronized merely by receiving broadcast messages rather than relying on two-way message exchange. Simulation results show that our improved strategy reduced the energy consumption and prolonged the lifetime of network compared with TPSN.

Accession Number: WOS:000397216200113

Conference Title: 2nd International Conference on Computer and Automation Engineering (ICCAE)

Conference Date: FEB 26-28, 2010

Conference Location: Singapore, SINGAPORE

Conference Sponsors: IACSIT, IEEE, IEEE Computat Intelligence Soc, ACSS, Journal Elect Sci & Technol, Inst Elect Singapore, UESTC

ISSN: 2154-4352

ISBN: 978-1-4244-5569-0

Record 29 of 42

Title: An improved centroid detection method based on higher moment for Shack-Hartmann wavefront sensor

Author(s): Xia, AL (Xia Ai-li); Ma, CW (Ma Cai-wen)

Edited by: Yoshizawa T; Wei P; Zheng J; Shimura T

Source: OPTOELECTRONIC IMAGING AND MULTIMEDIA TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 7850  Article Number: 78501Q  DOI: 10.1117/12.870136  Published: 2010  

Abstract: The accuracy of the Shack-Hartmann wavefront sensor (SHWS) for measuring the distortion wavefront is mainly dependent upon the measurement accuracy of the centroid of the focal spot. Many methods have been presented to improve the accuracy of the wavefront centroid measurement by weakening the influence of various noises, such as the photo noise, the read-out noise, the background noise, unevenness and instability of the light source, etc. In general, these methods mainly use the first moment centroid algorithm to calculate the centroid in the whole sub-aperture. In this paper, we present an improved centroid measurement approach that calculate the centroid of the focal spot more precisely using the higher moment centroid method in an optimized detection window. Based on the improved method, the effects of various noises out of the optimized detection window are almost eliminated; furthermore, the noise influences in the optimized detection window are also weakened due to the more contributions of the focal spot intensity. The experimental results demonstrate that the precision and repeatability of focal spot centroid are more prominent than the results obtained via other commonly centroid methods.

Accession Number: WOS:000287705000048

Conference Title: Conference on Optoelectronic Imaging and Multimedia Technology

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8380-5

Record 30 of 42

Title: Theoretical analysis of light transmission in a perfectly circular double clad fiber using coupled mode method

Author(s): Xu, ZN (Xu, Zhongnan); Liu, ZJ (Liu, Zejin); Duan, KL (Duan, Kailiang); Zhao, W (Zhao, Wei)

Edited by: Singh UN; Fan D; Yao J; Walter RF

Source: HIGH-POWER LASERS AND APPLICATIONS V  Book Series: Proceedings of SPIE  Volume: 7843  Article Number: 784313  DOI: 10.1117/12.865515  Published: 2010  

Abstract: Light propagation in a perfect circular double clad fiber (DCF) is numerically investigated by using the coupled mode method with translating the DCF into a single mode fiber (SMF) and an annular core fiber (ACF). The results show that for the coupling coefficients between the LP01 mode of the SMF and the guided modes (LP0n modes) of the ACF, the high-order mode has a larger coupling coefficient than the low-order mode for the ACF. By using the coupled mode equations the field distribution in the DCF core is calculated, the results show that the power shows a quasi-periodic distribution along the DCF core and its average period increases with increasing wavelength for different DCF parameters. The simulation results agree with the light ray propagation in the DCF.

Accession Number: WOS:000287765300030

Conference Title: Conference on High-Power Lasers and Applications V

Conference Date: OCT 18-19, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, COS-Chinese Opt Soc

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8373-7

Record 31 of 42

Title: High-precision Digital Synchronous System in the Physical Diagnosis of Multi-Beam Laser Target System

Author(s): Xue, YD (Xue Yingdong); Bai, YL (Bai Yonglin); Liu, BY (Liu Baiyu); Wang, B (Wang Bo); Li, Y (Li Yan); Ouyang, XA (Ouyang Xian); Gou, YS (Gou Yongsheng); Zhang, W (Zhang Wei)

Edited by: Zhang Y; Sasian JM; Xiang L; To S

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 7656  Article Number: 76565T  DOI: 10.1117/12.864668  Published: 2010  

Abstract: A high-precision synchronous system has been developed to control the diagnostic equipments in the multi-beam laser target experiment. In the system, both digital delay and analog delay techniques are used simultaneously to realize the high-precision time delay. By adopting the embedded intelligent chip FPGA, the resource consumption of the system is obviously reduced; the performance of the digital delay part is improved. In the analog delay part, the capacitor charging and discharging techniques are used to realize the delay resolution of 5 ps. To reduce the impact of the random trigger signals, the jitter compensation circuit is also used in the design. The high-precision time delay and strong anti-interference ability of the system are proved by the experimental results.

Accession Number: WOS:000287797800209

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optical Test and Measurement Technology and Equipment

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-8194-8086-6

Record 32 of 42

Title: Chinese Text Detection and Location for Images in Multimedia Messaging Service

Author(s): Yan, JQ (Yan, Jianqiang); Tao, DC (Tao, Dacheng); Tian, CN (Tian, Chunna); Gao, XB (Gao, Xinbo); Li, XL (Li, Xuelong)

Book Group Author(s): IEEE

Source: IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010)  Book Series: IEEE International Conference on Systems Man and Cybernetics Conference Proceedings  Published: 2010  

Abstract: Text detection and recognition for images in multimedia messaging service is a very important task. Since Chinese characters are composed of four kinds of strokes, i.e., horizontal line, top-down vertical line, left-downward slope line and short pausing stroke, we present Gabor filters with scale and direction varied to describe the strokes of Chinese characters for candidate text area extraction. By establishing four sub-neural networks to learn the texture of text area, the learnt classifiers are used to detect candidate text areas. Experimental results show that the proposed approach can improve the accuracy of text detection and the recognition rate of images in multimedia messaging service.

Accession Number: WOS:000295015304018

Conference Title: IEEE International Conference on Systems, Man and Cybernetics

Conference Date: OCT 10-13, 2010

Conference Location: Istanbul, TURKEY

Conference Sponsors: IEEE

Author Identifiers:

ISSN: 1062-922X

ISBN: 978-1-4244-6588-0

Record 33 of 42

Title: The Analyze of the Interference Hyper-spectral Image Features and Compression

Author(s): Zhang, L (Zhang, Lei); Zhang, SC (Zhang, ShanCong); Bin, XL (Bin Xiangli); Quan, SX (Quan, Shengxue)

Edited by: Jiang Y; Kippelen B; Yu J

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTOELECTRONIC MATERIALS AND DEVICES FOR DETECTOR, IMAGER, DISPLAY, AND ENERGY CONVERSION TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 7658  Article Number: 765839  DOI: 10.1117/12.867626  Published: 2010  

Abstract: Interference hyper spectral image and the images contain some interference information which are collected by the LASIS are only middle results of the spectrometer, is a three-dimensional image. The amount of the data is large size, and need to be compressed. For testing the actual interference hyper spectral image, use different composed way, to compose of LAMIS and LADIS image, the LASIS image has different target with different spectral band, LAMIS has the same target with different spectrum, LADIS has the same spectrum with different target. The spatial correlation and spectral correlation are analyzed. The self-coefficient and cross-coefficient are also calculated. The method that LASIS extract into LADIS is proposed, which separate interference information form spatial image, and it is a new foundation for interference information protection of LASIS image. The feather of LASIS image is revealed, the results obtained can be use LASIS image processing and compressing.

Accession Number: WOS:000287802500117

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

ISSN: 0277-786X

ISBN: 978-0-8194-8088-0

Record 34 of 42

Title: A Hyper-spectral Images Compression Algorithm based on 3-D Bit Plane Transform

Author(s): Zhang, L (Zhang, Lei); Xiang, LB (Xiang, Libin); Zhang, S (Zhang, Sam); Quan, SX (Quan, Shengxue)

Edited by: Jiang Y; Kippelen B; Yu J

Source: 5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTOELECTRONIC MATERIALS AND DEVICES FOR DETECTOR, IMAGER, DISPLAY, AND ENERGY CONVERSION TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 7658  Article Number: 76585R  DOI: 10.1117/12.867625  Published: 2010  

Abstract: According the analyses of the hyper-spectral images, a new compression algorithm based on 3-D bit plane transform is proposed. The spectral coefficient is higher than the spatial. The algorithm is proposed to overcome the shortcoming of 1-D bit plane transform for it can only reduce the correlation when the neighboring pixels have similar values. The algorithm calculates the horizontal, vertical and spectral bit plane transform sequentially. As the spectral bit plane transform, the algorithm can be easily realized by hardware. In addition, because the calculation and encoding of the transform matrix of each bit are independent, the algorithm can be realized by parallel computing model, which can improve the calculation efficiency and save the processing time greatly. The experimental results show that the proposed algorithm achieves improved compression performance. With a certain compression ratios, the algorithm satisfies requirements of hyper-spectral images compression system, by efficiently reducing the cost of computation and memory usage.

Accession Number: WOS:000287802500207

Conference Title: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology

Conference Date: APR 26-29, 2010

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: COS-Chinese Opt Soc, SPIE

ISSN: 0277-786X

ISBN: 978-0-8194-8088-0

Record 35 of 42

Title: An Analytical Investigation of Excitonic Absorption in Terahertz-Driven Quantum Wells

Author(s): Zhang, TY (Zhang, Tong-Yi); Zhao, W (Zhao, Wei)

Edited by: Zhang C; Zhang XC; Siegel PH; He L; Shi SC

Source: INFRARED, MILLIMETER WAVE, AND TERAHERTZ TECHNOLOGIES  Book Series: Proceedings of SPIE  Volume: 7854  Article Number: 78540I  DOI: 10.1117/12.868775  Published: 2010  

Abstract: An analytical solution of the optical susceptibility of quantum wells driven by a terahertz (THz) field is achieved based on the density-matrix formalism. A simplified three-level model is adopted for the quantum well structures, with the levels coupled by a near-infrared (NIR) and a THz field. The equation of motion for the polarization is derived from Liouville's equation for the density matrix. Using Floquet's theorem, and under the rotating-wave approximation with respect to the NIR probe field, analytical expression for the optical susceptibility of the driven quantum wells is obtained. Different features rising induced by the driving THz field in the absorption spectrum of the NIR probe are discussed for the THz field near resonance and out of resonance of the intra-excitonic transition. This analytical investigation of the susceptibility of the THz-field-driven quantum wells is much useful for clearly identifying the physical principles obscured in the full numerical calculations.

Accession Number: WOS:000287662100010

Conference Title: Conference on Infrared, Millimeter Wave, and Terahertz Technologies

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8384-3

Record 36 of 42

Title: A NOVEL DMD-based Hadamard Transform Spectral Imager

Author(s): Zhang, W (Zhang Wen); Hu, BL (Hu Bing-liang); Yan, P (Yan Peng); Wang, S (Wang Shuang); Li, LB (Li Li-bo)

Edited by: Thaung KS

Source: 2011 INTERNATIONAL CONFERENCE ON COMPUTERS, COMMUNICATIONS, CONTROL AND AUTOMATION (CCCA 2011), VOL III  Pages: 468-471  Published: 2010  

Abstract: A novel engineering Hadamard Transform Spectral Imager (HTSI) prototype of which the Digital Micro-mirror Device (DMD) fulfills the spatial light modulation is introduced. The spectral imager obtains three-dimensional data-cube simultaneously, in which two-dimensional polychromatic imagery for target acquisition while one-dimensional multispectral images for target discrimination and classification. The spatial and spectral resolutions of the image produced by this HTSI are adjustable through programming the DMD. The instrument has no macro-scale moving parts, and is capable to be built in a lightweight package. The results of the experiment indicate that this technology can be applied to diverse domains such as remote sensing, medical imaging and process monitoring.

Accession Number: WOS:000393844800123

Conference Title: International Conference on Computers, Communications, Control and Automation (CCCA 2011)

Conference Date: FEB 20-21, 2011

Conference Location: Hong Kong, PEOPLES R CHINA

Conference Sponsors: Asia Pacific Human Comp Interact Res Ctr, Soc Social Implications of Technol & Engn, Maldives Coll Higher Educ

ISBN: 978-1-61284-102-1

Record 37 of 42

Title: Ultracompact wave plates by air holes periodic dielectric waveguides

Author(s): Zhang, WF (Zhang, Wenfu); Liu, JH (Liu, Jihong); Huang, WP (Huang, Wei-Ping); Zhao, W (Zhao, Wei)

Edited by: Adibi A; Lin SY; Scherer A

Source: PHOTONIC AND PHONONIC CRYSTAL MATERIALS AND DEVICES X  Book Series: Proceedings of SPIE  Volume: 7609  Article Number: 76091H  DOI: 10.1117/12.845956  Published: 2010  

Abstract: Ultracompact wave plate (UWP) will be one of the key elements in future all-optical photonic integrated circuits (PICs). In this paper, we propose UWPs based on periodic dielectric waveguides (PDWs) with air holes in conventional dielectric waveguides. The mode characteristics (for both TE and TM) and birefringence of PDWs are calculated by plane wave method (PWM). The transmission efficiencies and phase changing of TE and TM waves in PDW are obtained by finite-difference time-domain (FDTD) scheme. Based on the PDWs, the quarter-wave plates (QWPs) and half-wave plates (HWPs) are designed. Calculating results show that the proposed PDW has large birefringence (Delta n>1) and can introduce 2 pi phase difference with a short length being less than lambda. The size of low order UWPs are compact. The transmission efficiency of PDW is improved by taper structure. Based on the taper PDW, ultra-wide band (>100 nm) achromatic QWP is designed. Profiting from the waveguide guiding, the UWPs have low beam divergence and can be easily integrated with other photonic components. The UWPs have many potential applications in future PIC systems such as optical communications, optical measurements and sensors.

Accession Number: WOS:000283790200030

Conference Title: Conference on Photonic and Phononic Crystal Materials and Devices X

Conference Date: JAN 26-28, 2010

Conference Location: San Francisco, CA

Conference Sponsors: SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8005-7

Record 38 of 42

Title: A New Package Structure for High Power Single Emitter Semiconductor Lasers

Author(s): Zhang, YX (Zhang, Yanxin); Wang, JW (Wang, Jingwei); Peng, CH (Peng, Chenhui); Li, XN (Li, Xiaoning); Xiong, LL (Xiong, Lingling); Liu, XS (Liu, Xingsheng)

Edited by: Bi K; Yang Y; Dong G

Source: 2010 11TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY & HIGH DENSITY PACKAGING (ICEPT-HDP)  Pages: 1346-1349  Published: 2010  

Abstract: High power semiconductor lasers have found increased applications in pumping solid state or fiber laser systems for industrial, military and medical applications as well as direct material processing applications. The reliability requirement for high power semiconductor lasers has been increased in recent years and it has been proven that indium-free packaging is one of the most effective ways in improving lifetime. The performance including reliability of high power semiconductor lasers is highly depended on the package structure. We have designed a new package structure for high power single emitter semiconductor lasers which is called F-mount. In contrast to traditional single emitter package structures, the F-mount offers indium-free packaging while improving or at least not sacrificing the thermal management. The heat sink of this new structure is insulated and easy for system integration. Finite element numerical analysis was used to compare the thermal resistance between F-mount structure and traditional structure. It was found that F-mount has high power and high electrical-to-output efficiency than the traditional structure. Lifetime testing was conducted on the F-mount devices and it was found that there was no obvious degradation in power over 7000 hours.

Accession Number: WOS:000328124000288

Conference Title: 11th International Conference on Electronic Packaging Technology and High Density Packaging (ICEPT-HDP)

Conference Date: AUG 16-19, 2010

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Chinese Inst Elect, Elect Mgf & Packaging Technol Soc, IEEE Component, Packaging, & Mgf Technol Soc, Xidian Univ, Beijing Faith Consulting Co Ltd

Author Identifiers:

ISBN: 978-1-4244-8142-2

Record 39 of 42

Title: Incoherent Dark Solitons Splitting in LiNbO₃:Fe Crystal

Author(s): Zhang, YH (Zhang Yuhong); Lu, KQ (Lu Keqing); Long, XW (Long Xuewen); Li, KH (Li Kehao); Guo, JB (Guo Jianbang)

Edited by: Gong Q; Guo GC; Shen YR

Source: QUANTUM AND NONLINEAR OPTICS  Book Series: Proceedings of SPIE-The International Society for Optical Engineering  Volume: 7846  Article Number: 78460U  DOI: 10.1117/12.868757  Published: 2010  

Abstract: We observed experimentally one-dimensional even-number sequence of dark photovoltaic solitons in LiNbO(3):Fe crystal without additional background illumination with spatially incoherent beam that contains a dark stripe generated from an amplitude jump in the center of the incoherent beam. In experiment, we found that the initial stripe width at the entrance face of the crystal is a key parameter for generating an even-number sequence of dark incoherent photovoltaic solitons. If the initial width of the dark stripe was small, only a Y-junction soliton pair was generated. As the initial width of the dark stripe was creased to 20.1 mu m, the stripe can split into an even-number sequence of soliton structure. The soliton pairs far away from the center had smaller width and less visibility. In addition, the separations between adjacent dark stripes became slightly smaller than that of the Y-junction dark solitons. In particular, when the input width in the entrance face of the crystal was 30.8 mu m, the diffractive beam in the output face of the crystal was no longer expanding its outer boundary, but shrank its width.

Accession Number: WOS:000287714100024

Conference Title: Conference on Quantum and Nonlinear Optics

Conference Date: OCT 18-19, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

ISBN: 978-0-8194-8376-8

Record 40 of 42

Title: Experimental Research on Image Motion Measurement Using Optical Joint Transform Correlator for Space Camera Application

Author(s): Zhao, H (Zhao, Hui); Yi, HW (Yi, Hongwei); Li, YC (Li, Yingcai); Che, CC (Che, Chicheng); Xiao, X (Xiao, Xiao)

Edited by: Bruzzone L

Source: IMAGE AND SIGNAL PROCESSING FOR REMOTE SENSING XVI  Book Series: Proceedings of SPIE  Volume: 7830  Article Number: 78301D  DOI: 10.1117/12.864658  Published: 2010  

Abstract: The optical joint transform correlator (JTC) is an effective way to measure the image motion that is hard to be eliminated for space camera. In this manuscript, the principle of JTC is briefly introduced and then a static experiment is designed to demonstrate the suitability of JTC for space camera application. The results demonstrate that the RMS (root-mean-square) error of motion determination can be controlled below 0.15 pixels in both the horizontal and vertical direction, which is good enough to satisfy the space camera requirements. Besides that, the performance of two methods used to locate the cross-correlation peak is also evaluated. Compared with the traditional centroid computing method, Intensity Weighting Centroiding (IWC) is superior because it can not only reduce the sensitiveness of cross-correlation peak to window size selection, but also improves measurement accuracy.

Accession Number: WOS:000287764200044

Conference Title: Conference on Image and Signal Processing for Remote Sensing XVI

Conference Date: SEP 20-22, 2010

Conference Location: Toulouse, FRANCE

Conference Sponsors: SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-8194-8347-8

Record 41 of 42

Title: Comprehensive performance analysis of popular odd-symmetric phase masks used for wave-front coded imaging system

Author(s): Zhao, H (Zhao, Hui); Li, YC (Li, Yingcai)

Edited by: Wang Y; Bentley J; Du C; Tatsuno K; Urbach HP

Source: OPTICAL DESIGN AND TESTING IV  Book Series: Proceedings of SPIE-The International Society for Optical Engineering  Volume: 7849  Article Number: 78491B  DOI: 10.1117/12.868287  Published: 2010  

Abstract: Wave-front coding was proposed in 1995 and is a powerful system-level technique used to extend the depth of field (DOF) of incoherent imaging system. The key to wave-front coding lies in the design of suitable phase masks which make the imaging system insensitive to defocus and defocus-related aberrations. Among all phase masks used for wave-front coding, odd-symmetric types are dominant and can provide larger extended DOF. With the acceptable degradation of MTF (Modulation Transfer Function) taken as a criterion, optimization procedure is used to obtain the optimum parameters for popular odd-symmetric phase masks and then a comprehensive analysis is carried out by considering four factors: DOF extension capability, sensitiveness to elementary aberrations, PSF (Point Spread Function) shifting effect and restorability of intermediate blurred images. To the best of our knowledge, the comprehensive analysis on performance of popular odd-symmetric phase masks, as done in this manuscript, has not been made before. So, the work reported here could be considered as a complementary part to the field of wave-front coding.

Accession Number: WOS:000287704000038

Conference Title: Conference on Optical Design and Testing IV

Conference Date: OCT 18-20, 2010

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Opt Soc (COS)

ISSN: 0277-786X

ISBN: 978-0-8194-8379-9

Record 42 of 42

Title: Two synchronized operating modes of femtosecond and picosecond pulses in a dual-wavelength laser

Author(s): Zhu, CJ (Zhu, Changjun); He, JF (He, Junfang); Zhai, XJ (Zhai, Xuejun); Xue, B (Xue, Bing); Zhang, CH (Zhang, Chonghui)

Edited by: Huang YM

Source: OPTOELECTRONIC MATERIALS, PTS 1AND 2  Book Series: Materials Science Forum  Volume: 663-665  Pages: 284-+  DOI: 10.4028/www.scientific.net/MSF.663-665.284  Part: 1,2  Published: 2010  

Abstract: Two synchronized operating modes of femtosecond and picosecond pulses, cross mode-locking and multi-pulse operating, are presented in a two-beam-pumped dual-wavelength Ti:sapphire laser. For the cross mode-locking mode, synchronized laser pulses of 37.5 fs and 0.891 Ps, with a timing jitter of 139 fs, are obtained in the femtosecond cavity and picosecond cavity, respectively. For the multi-pulse mode, pulses of 35 fs are obtained in the femtosecond cavity, whereas, multi-pulse mode appears in the picosecond cavity, with a pulse envelope width of 1.06 Ps. The two operating modes can be switched from one to the other, dominated mainly by the mutual interaction between cross-phase modulation and self-amplitude modulation.

Accession Number: WOS:000290881000065

Conference Title: International Conference on Optical, Electronic and Electrical Materials

Conference Date: AUG 01-04, 2010

Conference Location: Kunming, PEOPLES R CHINA

Conference Sponsors: Trans Tech Publicat, Nat Sci Fdn China

Author Identifiers:

ISSN: 0255-5476