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2018年47卷11期31篇论文

<RECORD 1>

Accession number:20190106343294

Title:Integration Algorithm in Three-dimensional Plane Shape Measuring by Fringe Reflection

Authors:Zhu, Yong-Jian (1); Zhu, Li-Xin (1); Zhong, Jian-Ping (1); Qi, Guang-Wen (1); Liu, Wei-Tao (1); Song, Shu-Xiang (1)

Author affiliation:(1) College of Electronic Engineering, Guangxi Normal University, Guilin; Guangxi; 541004, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1112001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the noise of different gradient data, several typical gradient integral algorithms are studied and discussed, an improved Southwell global integral algorithm was proposed. Taking the similarity and root mean square error between the reconstructed surface and the original surface as the performance parameters, the gradient data was simulated. A fringe reflection experiment platform was built to reconstruct the standard concave spherical mirror, and the fringe reflection measurement results were compared with the actual component parameters. The experimental results show that the radius error of the concave sphere reconstructed by the improved Southwell algorithm is 0.09%, the structural similarity is greater than 0.999, and the reconstruction speed is 1.2 times that of the original algorithm. Compared with the traditional integration algorithm, the improved Southwell algorithm achieves higher reconstruction quality and reconstruction efficiency, and meets the requirements of non-contact, high accuracy and strong stability of the mirror object measurement.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Phase measurement

Controlled terms:Mean square error - Mirrors - Optical testing - Surface measurement

Uncontrolled terms:3D reconstruction - Fringe reflections - Performance parameters - Reconstructed surfaces - Reconstruction efficiency - Reconstruction quality - Root mean square errors - Structural similarity

Classification code:741.3  Optical Devices and Systems - 922.2  Mathematical Statistics - 942.2  Electric Variables Measurements - 943.2  Mechanical Variables Measurements

Numerical data indexing:Percentage 9.00e-02%

DOI:10.3788/gzxb20184711.1112001

Funding Details: Number; Acronym; Sponsor: 2015ZD004; GXNU; Guangxi Normal University - Number; Sponsor: 2017JJA150057; Natural Science Foundation of Guangxi Zhuang Autonomous Region - Number; Sponsor: 51775230; National Natural Science Foundation of China - Number; Sponsor: 61275110; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 2>

Accession number:20190106343297

Title:SPs of Composite Structure of Dielectric Grating/Metal Film with Silver Cube

Authors:Wang, Xiang-Xian (1); Pang, Zhi-Yuan (1); Zhang, Dong-Yang (1); Bai, Xue-Lin (1); Feng, Wang-Jun (1); Qi, Yun-Ping (2)

Author affiliation:(1) School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; (2) College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou; 730070, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1131001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A composite structure of dielectric grating/metal film with silver nanocubes is theoretically designed, and the ultrahigh electric field enhancement factor in the composite structure is numerically simulated using the finite element method. The surface plasmons are excited by the laser with wavelength of 442 nm. By discussing the extinction spectrum of the silver nanocubes with different sizes, and the reflection spectra of the grating with different period and thickness, the optimal parameters are selected, which the side length of silver nanocubes is 70 nm, the period of grating is 312 nm and the thickness is 90 nm. Under the condition of optimal parameters, electric field intensity distribution in the composite structure is calculated. For the resonant coupling of local surface plasmon and propagation surface plasmon in the dielectric grating/metal film with silver nanocubes composite structure. The electric field enhancement factor of hot spot is as high as 1.53&times;10<sup>6</sup>, which exists in the position between grating ridge and the lower vertexes of silver nanocube. The ultrahigh electric field enhancement generated by the composite structure has the potential to be applied to the study of surface-enhanced Raman scattering.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:25

Main heading:Nanocomposite films

Controlled terms:Dielectric materials - Electric fields - Finite element method - Raman scattering - Silver - Structure (composition) - Surface plasmons - Surface scattering

Uncontrolled terms:Dielectric grating - Electric field enhancement - Electric field enhancement factor - Electric-field intensity distribution - Local surface plasmons - Resonant couplings - Surface enhanced Raman Scattering (SERS) - Ultra-high electric fields

Classification code:547.1  Precious Metals - 701.1  Electricity: Basic Concepts and Phenomena - 708.1  Dielectric Materials - 712.1  Semiconducting Materials - 741.1  Light/Optics - 921.6  Numerical Methods - 931  Classical Physics; Quantum Theory; Relativity - 951  Materials Science

Numerical data indexing:Size 3.12e-07m, Size 4.42e-07m, Size 7.00e-08m, Size 9.00e-08m

DOI:10.3788/gzxb20184711.1131001

Funding Details: Number; Sponsor: 61505074; National Natural Science Foundation of China - Number; Sponsor: 61865008; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 3>

Accession number:20190106343285

Title:Optimization Design of Ultra-low Loss Low Nonlinear Flatten Dispersion Photonic Crystal Fiber

Authors:Xue, Lu (1, 2); Zhang, Ya-Ni (1, 2, 3); Zhu, Yu-Yu (1, 2); Xi, Ya-Ru (1, 2); Xu, Qiang (1, 2); Mei, Sen (4); Kong, De-Peng (4)

Author affiliation:(1) School of Physics and Optoelectronics Technology, Baoji University of Arts &amp; Science, Baoji; Shaanxi; 721016, China; (2) Baoji Engineering Technology Research Centre on Ultrafast Laser and New Materials, Baoji; Shaanxi; 721016, China; (3) School of Arts and Sciences, Shaanxi University of Science&amp; Technology, Xi'an; 710021, China; (4) Research Department of Information Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China

Corresponding author:Zhang, Ya-Ni(yanizhang1@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1106005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A novel simple structure of photonic crystal fiber is optimized based on silica as the backing material, which has a cladding of hexagonal symmetric array uniform circle air hole and a larger the area of fiber core by missing central air column and reducing six air holes around the central core. Based on finite difference time domain method with the boundary conditions of anisotropic perfectly matched layers, its dispersion, nonlinear, confinement loss and fundamental mode field is numerically investigated. Numerical results indicate that the proposed fiber shows ultra-low loss, low non-linear and flattened dispersion performance. Its confinement loss is less than 10<sup>-7</sup> dB&bull;km<sup>-1</sup> over communication band, which is 2.93&times;10<sup>-8</sup> dB&bull;km<sup>-1</sup> and 7. 33&times;10<sup>-10</sup> dB&bull;km<sup>-1</sup> at wavelength of 1.55 &mu;m and 1.31 &mu;m, respectively. Furthermore, it appears double zero dispersion point and a certain ultra-flatten dispersion in the longer wavelength range, which flattened dispersion is 0&plusmn;1.7 ps&bull;km<sup>-1</sup>&bull;nm<sup>-1</sup> over 1.05~1.65 &mu;m. Another, its non-linear coefficient is only 4.88 km<sup>-1</sup>W<sup>-1</sup> at wavelength of 1.55 &mu;m. It is obviously to obtained admirable application in the field of long distance high speed optical communication system due to its ultra-low loss low non-linear and flatten dispersion capability.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:33

Main heading:Holey fibers

Controlled terms:Crystal structure - Crystal whiskers - Dispersion (waves) - Fibers - Finite difference time domain method - Optical communication - Photonic crystal fibers - Silica - Time domain analysis

Uncontrolled terms:Anisotropic perfectly matched layer - Communication bands - Confinement loss - Fiber optics and waveguides - Flattened dispersion - Non linear - Nonlinear coefficient - Optimization design

Classification code:717.1  Optical Communication Systems - 921  Mathematics - 933.1.1  Crystal Lattice - 951  Materials Science

Numerical data indexing:Size 1.05e-06m to 1.65e-06m, Size 1.31e-06m, Size 1.55e-06m

DOI:10.3788/gzxb20184711.1106005

Funding Details: Number; Sponsor: 11504416; National Natural Science Foundation of China - Number; Sponsor: 11647008; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 4>

Accession number:20190106343296

Title:Application of Image Spherizing Algorithm in Deformation Detection for Micro-channel Plate

Authors:Zhao, Ran (1); Wang, Jiu-Wang (1); Zhang, Xian (1); Feng, Yue-Chong (1); Zhou, You (1)

Author affiliation:(1) China Building Materials Academy, Beijing; 100024, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1112003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An image spherizing algorithm-baesd deformation detecting method for micro-channel plate is proposed. A rigorous mathematical deduction on image spherizing model is described in detail, subsequently a straight line image is chosen as standard picture and the imaging simulated test for deformed micro-channel plate is performed. According to the simulated results, the mechanism of image twisting phenomenon is described. At last, the deformation detection scheme of double lines method is proposed. The experimental set-up is designed and the detection standard is defined based on the simulated data and the planeness of micro-channel plate that measured by scanning electron microscope. The experimental result which obtained by interferometer showed that the actual profile characteristics of deformed micro-channel plate is consistent with the theoretical analysis. A micro-channel plate will be treat as defective product when the rotation angle of two orthogonal lines in the reflected image on the surface of micro-channel plate is greater than 40&deg;, whereas the product will meet the military standard when the rotation angle is smaller than 7&deg;. The accuracy of the proposed method can reach 1 &mu;m and it has been applied to the production process of micro-channel plate.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Military photography

Controlled terms:Computer vision - Deformation - Error detection - Image storage tubes - Scanning electron microscopy

Uncontrolled terms:Defective products - Deformation detection - Experimental set up - Image spherizing - Image twisting phenomenon - Micro channel plate - Production process - Simulated results

Classification code:404.1  Military Engineering - 714.1  Electron Tubes - 723.5  Computer Applications

Numerical data indexing:Size 1.00e-06m

DOI:10.3788/gzxb20184711.1112003

Funding Details: Number; Sponsor: ZR201702090137; Natural Science Foundation of Shandong Province - Number; Sponsor: ZR2017LA010; Natural Science Foundation of Shandong Province

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 5>

Accession number:20190106343307

Title:Quantification of Fluorescence Parameter for Eu(BA)<inf>3</inf> Phen Doped Polyacrylonitrile Nanofibers

Authors:Zhang, Tong (1); Song, Yu (1); Li, De-Sheng (2); Lin, Hai (1, 2)

Author affiliation:(1) School of Textile and Material Engineering, Dalian Polytechnic University, Dalian; Liaoning; 116034, China; (2) School of Information Science and Engineering, Dalian Polytechnic University, Dalian; Liaoning; 116034, China

Corresponding author:Lin, Hai(lhai@dlpu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1116002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Eu(BA)<inf>3</inf>Phen ternary complexes by benzoic acid and 1, 10-Phenanthroline were synthesized and the fluorescent nanofibers with polyacrylonitrile polymer were prepared by electrostatic spinning technology. Scanning electron microscope, fluorescence and absolute spectra were used to study its microstructure and fluorescence characteristics, respectively. The results claim that Eu(BA)<inf>3</inf>Phen complex doped polyacrylonitrile fibers are randomly arranged with uniform diameter ~ 200 nm. Under ultraviolet-B radiation, the nanofiber emits lightful red fluorescence. With the content of europium complex increased, the emission intensity of nanofibers is significantly enhanced due to the effectiveness of energy transfer. Under the excitation of 308 nm light emitting diode with 115.61 mW pumping power, the total emission photons are derived to be 25.71&times;10<sup>11</sup>, 61.50&times;10<sup>11</sup> and 106.12&times;10<sup>11</sup> cps, corresponding to 1 wt%, 2 wt% and 4 wt% Eu(BA)<inf>3</inf>Phen doped polyacrylonitrile nanofibers, respectively. Among them, the number of emitting photons by the <sup>5</sup>D<inf>0</inf> &rarr;<sup>7</sup>F<inf>2</inf> transition of Eu<sup>3+</sup> reaches 15.98&times;10<sup>11</sup>, 41.21&times;10<sup>11</sup> and 70.76&times;10<sup>11</sup> cps, respectively. The maximum stimulated emission cross-sections of Eu<sup>3+</sup> from <sup>5</sup>D<inf>0</inf> &rarr;<sup>7</sup>F<inf>2</inf> is calculated to be 4.12&times;10<sup>-21</sup> cm<sup>2</sup>, showing the strong light radiation ability of nano-fluorescent fibers. Fluorescence quantification reveals the high photon-conversion efficiency of Eu(BA)<inf>3</inf>Phen doped polyacrylonitrile nanofibers and provides the broader application prospects in the field of sensitization of flexible solar cells as a ultraviolet-visible conversion layer.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:27

Main heading:Europium compounds

Controlled terms:Benzoic acid - Energy transfer - Fluorescence - Light - Nanofibers - Photons - Polyacrylonitriles - Scanning electron microscopy - Spinning (fibers) - Synthesis (chemical)

Uncontrolled terms:Fluorescence characteristics - Fluorescence quantification - Photon conversion - Photon conversion efficiencies - Polyacrylonitrile fiber - Polyacrylonitrile nanofibers - Stimulated emission cross section - Ultraviolet B radiations

Classification code:741.1  Light/Optics - 761  Nanotechnology - 802.2  Chemical Reactions - 804.1  Organic Compounds - 815.1.1  Organic Polymers - 819.3  Fiber Chemistry and Processing - 931.3  Atomic and Molecular Physics - 933  Solid State Physics

Numerical data indexing:Power 1.16e-01W, Size 2.00e-07m, Size 3.08e-07m

DOI:10.3788/gzxb20184711.1116002

Funding Details: Number; Sponsor: 61275057; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 6>

Accession number:20190106343298

Title:Preparation and Performance Research of Highly Homogeneous Silver Nanowire Transparent Conductive Films on the Flexible Substrate

Authors:Xu, Jing (1, 3); Yang, Jian-Jun (2, 3); Zhong, Jian (1); Zeng, Wei (1, 3); Yang, Kai-Qiang (3, 4)

Author affiliation:(1) School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu; 610054, China; (2) School of Electronic and Information Engineering, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan; Guangdong; 528402, China; (3) State Key Laboratory of Electronic Tine Films and Integrated Devices Zhongshan Branch, Zhongshan; Guangdong; 528402, China; (4) School of Electronic Science and Engineering, National Exemplary School of Microelectronics, University of Electronic Science and Technology of China, Chengdu; 610054, China

Corresponding author:Yang, Jian-Jun(sdyman@uestc.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1131002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Highly homogeneous silver nanowire films with few silver nanoparticles are prepared with the method of improved vacuum filtration. Silver nanowires are pressed on the flexible substrates in order after processing vacuum filtration on the same substracte and repeat it for several times. The surface topography and the distributions of transmittance and sheet resistance of manufactured transparent conductive films are discussed. The result shows that the average sheet resistance of the film fabricated by three-times vacuum filtration reaches 7.47 &Omega;/sq with a transmittance of 82.5%.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Conductive films

Controlled terms:Film preparation - Metal nanoparticles - Nanowires - Sheet resistance - Silver nanoparticles - Substrates - Surface topography - Topography

Uncontrolled terms:Flexible substrate - Flexible transparent conductive films - Performance research - Silver nanowires - Transmittance - Transparent conductive films - Vacuum filtration

Classification code:708.2  Conducting Materials - 761  Nanotechnology - 931.2  Physical Properties of Gases, Liquids and Solids - 942.2  Electric Variables Measurements - 951  Materials Science

Numerical data indexing:Percentage 8.25e+01%

DOI:10.3788/gzxb20184711.1131002

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 7>

Accession number:20190106343305

Title:Development of a Green Laser Pumped by Flash Lamp Applicable to Underwater Synchronous Lightening

Authors:Ye, Qing (1, 2); Fan, Yi-Song (1, 3); Bian, Jin-Tian (1, 2); Yu, Feng (1, 2); Su, Rui (3)

Author affiliation:(1) State Key Laboratory of Pulsed Power Laser Technology, National University of Defence Technology, Hefei; 230037, China; (2) Advanced Laser Technology Laboratory of Anhui Province, Hefei; 230037, China; (3) Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei; 230031, China

Corresponding author:Bian, Jin-Tian(bianjt@126.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1114004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Green laser with large pulse width and high single pulse energy was developed, which has a pulse repetition frequency synchronized with high speed camera frame frequency and is applicable for fiber coupling output. Together with the application of plano-convex unstable resonator, the laser was equipped with a flash-lamp pumped Nd: YAG crystal, a KTP crystal for intracavity frequency doubling and a passive Q-switching crystal. A laser light output was realized with a wavelength of 532 nm, the maximum repetition rate was 300 Hz, the pulse width was 70 &mu;s, the average power was 38 W, the single pulse energy was 126.7 mJ and the divergence angle was 3.5 mrad. The laser was further coupled to an underwater fiber of 800 &mu;m in diameter, achieving a 92% coupling efficiency.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Pumping (laser)

Controlled terms:Frequency doublers - High speed cameras - Neodymium lasers - Pulse repetition rate - Q switching - Yttrium aluminum garnet

Uncontrolled terms:Fiber couplings - Flash lamp - KTP crystals - Laser illumination - Passive Q-switching

Classification code:713.5  Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 742.2  Photographic Equipment - 744  Lasers

Numerical data indexing:Energy 1.27e-01J, Frequency 3.00e+02Hz, Percentage 9.20e+01%, Power 3.80e+01W, Size 5.32e-07m, Size 8.00e-04m, Time 7.00e-05s

DOI:10.3788/gzxb20184711.1114004

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 8>

Accession number:20190106343306

Title:Electromagnetic Induced Transparency Based on All-dielectric Metasurface

Authors:Hu, Sen (1); Liu, Dan (1); Yang, He-Lin (2)

Author affiliation:(1) Department of Physics and Mechanical &amp; Electrical Engineering, Hubei University of Education, Wuhan; 430205, China; (2) College of Physical Science and Technology, Central China Normal University, Wuhan; 430079, China

Corresponding author:Liu, Dan(liudanhu725@126.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1116001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Classical analogy of electromagnetically induced transparency-like effect was demonstrated by a all-dielectric metasurface structure based on TiO<inf>2</inf>, which composed of two cross perpendicular dielectric bars and four dielectric bricks. Under the excitation of incident electromagnetic field, electric Mie resonance, which is directly excited by the incident electromagnetic field in the dielectric bar, can excite the magnetic Mie resonance in the dielectric bricks by the interaction of each other, and then produce the destructive interference between the resonant modes, thus the phenomenon of electromagnetic induced transparency occurs. By using the simulation software and the "two oscillators" coupled model, the simulation calculation and quantitative analysis of the electromagnetic induced transparency effect were both carried out. Results show that a transparent window with a transmittance of nearly 96% is generated at 0.552 THz under the normal incidence of electromagnetic wave. Owing to its C4 rotation symmetric and multiple dark mode resonant elements of the proposed structure, the induced transparency effect is characterized by a broadband transparency window and insensitive to the incident electric field polarization.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:26

Main heading:Electric excitation

Controlled terms:Brick - Computer software - Electric fields - Electromagnetic fields - Electromagnetic waves - Polarization - Resonance - Terahertz waves - Titanium dioxide - Transparency

Uncontrolled terms:Electromagnetic induced transparency - Metasurface - Mie resonance - Polarization-insensitive - Simulation

Classification code:414.2  Brick Materials - 701  Electricity and Magnetism - 701.1  Electricity: Basic Concepts and Phenomena - 711  Electromagnetic Waves - 723  Computer Software, Data Handling and Applications - 741.1  Light/Optics - 804.2  Inorganic Compounds - 931.1  Mechanics

Numerical data indexing:Frequency 5.52e+11Hz, Percentage 9.60e+01%

DOI:10.3788/gzxb20184711.1116001

Funding Details: Number; Sponsor: 11504100; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 9>

Accession number:20190106343286

Title:Temperature Response Properties of Macrobending Loss of Single-mode Fiber

Authors:Peng, Xing-Ling (1); Cha, Ying-Peng (1, 2); Zhang, Hua (2); Li, Yu-Long (2)

Author affiliation:(1) Jiangxi Province Key Laboratory of Precision Drive &amp; Control, Mechanical &amp; Electrical Engineering School, Nanchang Institute of Technology, Nanchang; 330099, China; (2) Key Lab for Robot &amp; Welding Automation of Jiangxi Province, School of Mechatronic Engineering, Nanchang University, Nanchang; 330031, China

Corresponding author:Zhang, Hua(hzhang@ncu.edu.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1106006

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to realize fiber-optic temperature sense based on macrobending loss properties of sinlgle-mode fiber, temperature sensing properties of macro-bend single-mode fiber were studied theoretically and experimentally. Temperature correction is made for a classical macrobending loss theoretical formula of single-mode fiber. Then simulation analysis of effects of bend radius, wavelength and temperature on bend loss of a single-mode fiber with core-infinite cladding structure is made based on the formula. After that, a single-mode fiber temperature sensor with an inner absorption layer and an outer nickel layer outside the cladding layer of the fiber is designed and made. Finally, experimental tests of temperature sensing performance of the sensor are carried out and discussed. Results show that macrobending loss of the fiber with core-infinite cladding structure is sensitive to bend radius, wavelength of light resource and temperature, and the temperature response of the sensor is linear. In addition, the proposed fiber-optic sensor shows a temperature resolution of 0.4&#8451;. It's worth noting that the temperature sensitivity and resolution can be increased by decreasing the bend radius and raising the wavelength of light resource. Thus such single-mode fiber can be treated as core-infinite cladding structure single-mode fiber, which can be used to develop macro-bend optical fiber sensor based on macrobending loss properties.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:24

Main heading:Single mode fibers

Controlled terms:Cladding (coating) - Fiber optic sensors - Fiber optics - Optical fibers - Structural properties - Temperature sensors

Uncontrolled terms:Absorption layer - Infinite cladding - Macro-bending loss - Protecting layer - Temperature sensing

Classification code:408  Structural Design - 741.1.2  Fiber Optics - 944.5  Temperature Measuring Instruments - 951  Materials Science

DOI:10.3788/gzxb20184711.1106006

Funding Details: Number; Sponsor: GJJ171007; Education Department of Jiangxi Province

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 10>

Accession number:20190106343303

Title:Spatial Filter Pinhole Alignmenton High Power Laser Facility

Authors:Yan, Shi-Sen (1, 2); Liu, Dai-Zhong (1); Ou-Yang, Xiao-Ping (1); Gong, Lei (1); Li, Hong (1); Lin, Qiang (1); Tang, Shun-Xing (1); Zhu, Bao-Qiang (1)

Author affiliation:(1) Laboratory of High Power Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai; 201800, China; (2) University of the Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Liu, Dai-Zhong(dzhliu@mail.shcnc.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1114002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Using grating diffraction of a new far field alignment package, the spatial filtering pinholes alignment in two spatial filters especially on the same optical path is achieved. This scheme overcomes the shortcomings of pinholes size requirement of traditional method, realizes two pinholes center aligned while maintaining beams far-field alignment function. The new method has been successfully applied to the Israel project. The facility experiment results show that the alignment accuracy is less than 3% of the pinhole diameter which is 15 times of the beams diffraction limit, which meets the requirements of facility debugging (&lt;4% of the pinhole diameter).<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Beamforming

Controlled terms:Alignment - Diffraction - Diffraction gratings - High power lasers - Lasers - Systems analysis

Uncontrolled terms:Alignment accuracy - Collimation - Diffraction limits - Grating diffraction - High power laser facility - Optical path - Spatial filterings - Spatial filters

Classification code:601.1  Mechanical Devices - 711.2  Electromagnetic Waves in Relation to Various Structures - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 961  Systems Science

Numerical data indexing:Percentage 3.00e+00%

DOI:10.3788/gzxb20184711.1114002

Funding Details: Number; Sponsor: 11604317; National Natural Science Foundation of China - Number; Sponsor: 61605190; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 11>

Accession number:20190106343293

Title:Optical System of the Hyper-spectral Imager for the Underwater Environment and Targets Monitoring

Authors:Yu, Lei (1); Xu, Ming-Ming (1); Chen, Jie-Xiang (1); Xue, Hui (1)

Author affiliation:(1) Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei; 230031, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1101003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The observation method is analyzed and the performances parameters of corresponding spectrometer are obtained based on the characteristic spectrums of the major elements in the underwater environment. The telescope and the imaging spectrometer are separately designed and coupled together. The telescope adopted double Gauss refractive system and realized optimization of the telecentric design with few optical materials. The imaging spectrometer based on the Dyson mounting also performed excellently with the analysis of optical path and the added lenses. The final design obtained the excellent performances that the field of view is 28&deg;, the F number is 3, the spectral resolution is 3.5 nm, and the spatial resolution is 1 mrad in the waveband of 350 ~700 nm. The prototype verified the design theory.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Underwater imaging

Controlled terms:Lenses - Optical design - Optical systems - Spectrometers - Spectroscopy - Telescopes

Uncontrolled terms:Characteristic spectrum - Hyper spectra - Imaging spectrometers - Observation method - Prototype - Spatial resolution - Underwater detection - Underwater environments

Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 746  Imaging Techniques

Numerical data indexing:Size 3.50e-07m to 7.00e-07m, Size 3.50e-09m

DOI:10.3788/gzxb20184711.1101003

Funding Details: Number; Sponsor: 2016203; Youth Innovation Promotion Association of the Chinese Academy of Sciences - Number; Sponsor: 41504143; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 12>

Accession number:20190106343311

Title:Gradient Entropy Weighted Centroid Method for Air Target Tracking in Infrared Wide Field

Authors:Zhang, Shuai (1); Liu, Bing-Qi (1); Huang, Fu-Yu (1); Yu, Hao (1); Chen, Yi-Chao (1); Wang, Zi-Ang (1)

Author affiliation:(1) Department of Electronic &amp; Optics Engineering, Army Engineering University, Shijiazhuang; 050003, China

Corresponding author:Huang, Fu-Yu(hfyoptics@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1110002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to overcome the tracking difficulty caused by distorted shape and motion law of the target of non-similar imaging in infrared wide-field staring system, a gradient entropy weighted centroid model is proposed. The multi-targets tracking is achieved by combing Kalman filters with this model. The model adopts gray value gradient to describe the probability distribution of dim target. The gradient entropy weights in 8 directions of target are obtained to indicate the correlation between the different regions and centroid of the target. Meanwhile, multi-direction maximum gradient method is proposed to extract the sky-ground line in wide field and obtain the position of the deep space background. Then, the starting point is detected through background suppression. The linear path planning is adopted to solve the mutual interference of Kalman filtering models when the targets meet. The experiment results show that the proposed method can track aeromodellings, airplanes and missiles in three environments in field view of 70&deg; and 180&deg;. Compared with the traditional tracking method, the proposed method has a lower center location error and a high accuracy, and the average frame rate is increased by about 1.5 times.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Target tracking

Controlled terms:Clutter (information theory) - Entropy - Gradient methods - Kalman filters - Motion planning - Probability distributions

Uncontrolled terms:Background suppression - Center locations - Kalman-filtering - Mutual interference - Tracking method - Weighted centroid - Weighted centroid method - Wide field

Classification code:641.1  Thermodynamics - 716.1  Information Theory and Signal Processing - 921.6  Numerical Methods - 922.1  Probability Theory

DOI:10.3788/gzxb20184711.1110002

Funding Details: Number; Sponsor: 61801507; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 13>

Accession number:20190106343302

Title:Thermal and Mechanical Effect of the Narrow Band Filter Irradiated by Laser at Oblique Incidence

Authors:Ren, Xiao-Dong (1); Lei, Wu-Hu (1); Zeng, Ling-Qing (2); Wang, Yong (1)

Author affiliation:(1) School of Electronic Countermeasures, National University of Defense Technology, Hefei; 230037, China; (2) The Troops of 32026, Urumqi; 841700, China

Corresponding author:Lei, Wu-Hu(leiwhy@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1114001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the Maxwell equations and the thermodynamics theory, the thermal and mechanical effects of the 10. 6 &mu;m narrow band filter are analysed under the irradiation of the pulse laser at different incident angles and different polarizations. The temperature field and the stress field are studied at different incident angles and polarizations. The drift effect of the narrow band filter caused by the thermal and mechanical effects are calculated. The damage thresholds under different incident angles of the laser are compared and discussed. The results show that with the increase of incident angle, the amplitude and position coordinates of the peak temperature rise change greatly. The peak value of the temperature rise induced by the P and S polarized light irradiation decrease gradually with the increasing incident angles. The position coordinates of the peak temperature rise gradually close to the interface of the filter and air along with the change of incident angle. The difference of the the thermal and mechanical effects between P and S polarized light irradiation becomes more and more obvious. The passband drift characteristics under different laser incident angles with the same laser energy are compared. When the incident angle is small, the central wavelength deviation of the filter reaches over 200 nm, and the transmittance of 10.6 &mu;m decreases to less than 6%. With the increase of incident angle, the melting damage threshold of the filter gets bigger and bigger. The difference of melting damage threshold between P and S polarized light is very small when the angle of incidence small. When the incident angle is greater than 30&deg;, the melting damage threshold difference between P and S polarized light becomes larger and larger. The incident angle and polarization state of the laser should be considered in order to realize the laser damage to the narrow band filter with a small power.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Electromechanical filters

Controlled terms:Irradiation - Laser damage - Lasers - Light polarization - Maxwell equations - Melting - Polarization - Temperature

Uncontrolled terms:Central wavelength - Filter - Mechanical effects - Narrow band filter - Oblique incidence - Polarization state - Position coordinates - Thermodynamics theory

Classification code:641.1  Thermodynamics - 701.1  Electricity: Basic Concepts and Phenomena - 703.2  Electric Filters - 741.1  Light/Optics - 744.1  Lasers, General - 744.8  Laser Beam Interactions - 802.3  Chemical Operations

Numerical data indexing:Percentage 6.00e+00%, Size 1.06e-05m, Size 2.00e-07m, Size 6.00e-06m

DOI:10.3788/gzxb20184711.1114001

Funding Details: Number; Sponsor: 6167154; National Natural Science Foundation of China - Number; Sponsor: SKL2017ZR02; State Key Laboratory of Pulsed Power Laser Technology

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 14>

Accession number:20190106343284

Title:Visible and Infrared Broadband High Efficiency Dispersion Wave in Photonic Crystal Fiber with Two Zero Dispersion Wavelength

Authors:Zhao, Xing-Tao (1); Jiang, Guo-Hui (1); Cheng, Ji-Rui (1); Ha, Lu (1); Xiong, Qiang (1)

Author affiliation:(1) Measurement Technology and Instrumentation Key Lab of Hebei Province, Metastable Materials Science and Technology State Key Laboratory, Yanshan University, Qinhuangdao; Hebei; 066004, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1106004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The nonlinear spectroscopic experiments were carried out that femtosecond laser pulses generated by Ti: sapphire laser are used to pump high nonlinear double zero dispersion photonic crystal fibers. When the central wavelength of the pump pulse is 800 nm, in the anomalous dispersion region, the ultra-wide bandwidth continuous spectral output from the double zero dispersive photonic crystal fiber is observed. Compared with that of the single zero dispersive photonic crystal fiber, double zero dispersive photonic crystal fiber has higher conversion efficiency, stable and smooth spectral band. Both the high efficiency blue shifted dispersive waves and the broadband red shifted dispersion wave in the normal dispersion region at long wavelength are obtained. Consistent with the phase matching condition of theoretical analysis, the physical mechanism of the phase matching is clarified. With the increase of pump power, the long-band dispersion wave has a significant shift to long-wave band and the short (visible) band dispersion wave intensity increases significantly. When the pump power is 0.68 W, the pump is almost completely converted. The ratio of blue shift dispersion wave to residual pump output power is 257: 1, and the efficiency of spectral conversion is as high as 99.6%. The blue shift dispersive waves has a wide band of 309 nm, and the red shift dispersive waves in near infrared band is connected with the soliton wave to form a supercontinuum spectrum with a bandwidth of 628 nm. The experiment results have reference value for the study of ultrashort pulse laser frequency conversion and broadband light source.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Dispersion (waves)

Controlled terms:Bandwidth - Conversion efficiency - Crystal whiskers - Efficiency - Fibers - Infrared devices - Laser pulses - Nonlinear optics - Optical pumping - Phase matching  - Photonic crystal fibers - Raman scattering - Sapphire

Uncontrolled terms:Anomalous dispersion - Broadband Light Sources - Dispersive waves - High-efficiency - Phase matching conditions - Photonic crystal fiber with two zero-dispersion wavelengths - Spectral conversion - Supercontinuum spectra

Classification code:482.2.1  Gems - 525.5  Energy Conversion Issues - 713  Electronic Circuits - 716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 741.1.1  Nonlinear Optics - 744.1  Lasers, General - 913.1  Production Engineering - 933.1.1  Crystal Lattice - 951  Materials Science

Numerical data indexing:Percentage 9.96e+01%, Power 6.80e-01W, Size 3.09e-07m, Size 6.28e-07m, Size 8.00e-07m

DOI:10.3788/gzxb20184711.1106004

Funding Details: Number; Sponsor: 61405172; National Natural Science Foundation of China - Number; Sponsor: F2018203346; Natural Science Foundation of Hebei Province

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 15>

Accession number:20190106343292

Title:Underwater Image Enhancement Algorithm Based on Iterative Histogram Equalization with Conventional Light Source

Authors:Wang, Yong-Xin (1, 2); Diao, Ming (1); Han, Chuang (2)

Author affiliation:(1) School of Information and Communication Engineering, Harbin Engineering University, Harbin; 150001, China; (2) The Higher Educational Key Laboratory for Measuring &amp; Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin; 150080, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1101002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To enhance visual contrast and image quality for underwater image with conventional light source, an image enhancement algorithm based on iterative histogram equalization is proposed. Firstly, underwater image is decomposed into detail layer image and illumination layer image through Retinex model, and an image enhancement model is derived to improve the contrast effect of image on the basic of Weber contrast constant. Then, an image enhancement algorithm based on iterative histogram equalization is proposed to enhance the contrast of illumination layer image, and S-shade function is employed to stretch the contrast of detail layer image. Finally, the stretched detail layer image and enhanced illumination layer image are mixed to derive the preferable enhanced underwater image. Experimental results show that the visual contrast of underwater image is enhanced validly by the proposed algorithms, and the entropy and mean structural similarity index are higher than other image enhancement algorithms. Meanwhile the visual effect is ascended observably.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Image enhancement

Controlled terms:Equalizers - Graphic methods - Image processing - Iterative methods - Light sources - Underwater imaging

Uncontrolled terms:Contrast effects - Conventional light sources - Histogram equalizations - Image enhancement algorithm - Mean structural similarity indices - Retinex - Visual contrast - Weber contrast

Classification code:713.5  Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 746  Imaging Techniques - 921.6  Numerical Methods

DOI:10.3788/gzxb20184711.1101002

Funding Details: Number; Sponsor: 61601149; National Natural Science Foundation of China - Number; Sponsor: QC2017074; Natural Science Foundation of Heilongjiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 16>

Accession number:20190106343301

Title:Tunable Fano Resonance Based on Metal Square Core Structure Embedded in MIM Resonator

Authors:He, Bing-Qian (1); Li, Yong-Hong (1); Cao, Ya-Nan (2); Yue, Feng-Ying (3)

Author affiliation:(1) School of Instrument and Electronics, North University of China, Taiyuan; 030051, China; (2) School of Information and Communication Engineering, North University of China, Taiyuan; 030051, China; (3) School of Electrical and Control Engineering, North University of China, Taiyuan; 030051, China

Corresponding author:Li, Yong-Hong(466678237@qq.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1123003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A coupling structure which consists of a metal-insulator-metal resonator centered off from the metal square core and two side-coupled waveguides is designed. The propagation characteristics of the structure are studied by finite element method. The results show that the Fano resonance can be obtained and modulated by adjusting the deviation angle and deviation distance of the metal core in the cavity. The Fano resonance is caused by the symmetry breaking or geometric effect, which affects the intensity of the field distribution in the coupling region between the left and right waveguides and the cavity. The variation of field distribution mode is caused by the interference between the waveguide mode and the cavity mode. In addition, the spectral position and modulation depth of Fano resonance are very sensitive to the deviation parameters. By calculating the refractive index sensing characteristics under different deviation angles and deviation distances, the refractive index sensitivity is up to 1 508 nm/RIU, and the quality factor is up to 1 308. The research results provide a theoretical basis for designing more flexible, simple and efficient on-chip plasmonic nanosensors.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:26

Main heading:MIM devices

Controlled terms:Angle measurement - Electromagnetic wave polarization - Finite element method - Metal insulator boundaries - Metals - Nanosensors - Plasmonics - Refractive index - Resonance - Resonators  - Surface plasmons - Waveguides

Uncontrolled terms:Fano resonances - Field distribution modes - Metal structures - Propagation characteristics - Refractive index sensing - Refractive index sensitivity - Side-coupled waveguides - Surface plasmon polaritons

Classification code:711  Electromagnetic Waves - 714.2  Semiconductor Devices and Integrated Circuits - 714.3  Waveguides - 741.1  Light/Optics - 761  Nanotechnology - 921.6  Numerical Methods - 931.1  Mechanics - 933  Solid State Physics - 943.2  Mechanical Variables Measurements

DOI:10.3788/gzxb20184711.1123003

Funding Details: Number; Sponsor: 201701D121063; Natural Science Foundation of Shaanxi Province

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 17>

Accession number:20190106343287

Title:Magnetic Separation Fluorescent Sensor for Highly Sensitive Detection of Aflatoxin B1

Authors:Zeng, Yun-Long (1); Zhang, Min (1); Yi, Shou-Jun (1, 2); He, Pan (1); Zhao, Min (1); Xia, Xiao-Dong (1); Tang, Chun-Ran (1)

Author affiliation:(1) Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Hunan Province Key Laboratory of Controllable Preparation and Function Application of Fine Polymer, School of Chemistry and Chemical Engineering of Hunan University of Science and Technology, Xiangtan; Hunan; 411201, China; (2) School of Materials Science and Engineering of Hunan University of Science and Technology, Xiangtan; Hunan; 411201, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1128001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A fluorescent aptasensor was developed and applied to detect aflatoxin B1 based on Au@Fe<inf>3</inf>O<inf>4</inf>/aptamers/aminofunctioned carbon quantum dots magnetic nanocomposites which were constructed self-assembly. The selective interactions between aflatoxin B1 and the aptamer in the samples cause release of the aminofunctioned carbon quantum dots which remains in the solution after magnetic separation. A linear fluorescence signal response to aflatoxin B1 concentration is obtained over a wide aflatoxin B1 concentration range of 0.001~1.00 ng/mL with a detection limit of 0.3 pg/mL, and the correlation coefficient is 0.996 4. The performances of the fluorescent sensor are significantly improved as the background fluorescence is effectively removed by magnetic separation.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Fluorescence

Controlled terms:Aflatoxins - Carbon - Correlation detectors - Iron oxides - Magnetic separation - Magnetite - Nanocrystals - Self assembly - Semiconductor quantum dots - Trace analysis

Uncontrolled terms:Aflatoxin B1 - Aptamers - Carbon quantum dots - Correlation coefficient - Fluorescent sensors - Highly sensitive detections - Magnetic nanocomposites - Selective interaction

Classification code:461.6  Medicine and Pharmacology - 701.2  Magnetism: Basic Concepts and Phenomena - 714.2  Semiconductor Devices and Integrated Circuits - 741.1  Light/Optics - 761  Nanotechnology - 801  Chemistry - 804  Chemical Products Generally - 804.2  Inorganic Compounds - 951  Materials Science

Numerical data indexing:Mass_Density 1.00e-09kg/m3 to 1.00e-06kg/m3, Mass_Density 3.00e-10kg/m3

DOI:10.3788/gzxb20184711.1128001

Funding Details: Number; Sponsor: 21475040; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 18>

Accession number:20190106343291

Title:Study on Model of the Sea Surface Skin Temperature and Bulk Sea Surface Temperature in Northern Region of South China Sea

Authors:Zhang, Jian (1, 2); Hao, San-Feng (2, 3); Song, Qing-Jun (4); Zhao, Liang-Xiao (2, 3); An, Fei (2)

Author affiliation:(1) School of Mechano-electronic Engineering, Xidian University, Xi'an; 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; Shanxi; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) National Satellite Ocean Application Service, Beijing; 100081, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1101001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:For the research of marine remote sensing calibration of China, a mathematical model of bulk-skin sea surface temperature is proposed to improve the measurement precision of skin sea surface temperature to 0.3&#8451;. Skin sea surface temperature is measured by the self-designed automatic multi-spectral infrared radiometer system installed on the PY-301 oil platform in the northern part of the South China Sea, the measurement accuracy of the radiometer is better than&plusmn;0.5&#8451; through standard blackbody calibration, pupil correction and skylight correction. The effect of wind speed on the bulk-skin sea surface temperature is analyzed based on the model, the skin sea surface temperature is corrected by the proposed model and Donlon model, the biases of corrected results are -0.007 6&plusmn;0.297 1&#8451; and 0.044 6&plusmn;0.324 8&#8451;, respectively. Results prove that the proposed model is effective and can improve the measurement accuracy of skin sea surface temperature.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:19

Main heading:Surface waters

Controlled terms:Atmospheric temperature - Calibration - Infrared radiation - Mathematical models - Oceanography - Radiometers - Remote sensing - Submarine geophysics - Surface properties - Wind

Uncontrolled terms:Feature detection - Infra-red radiometers - Marine remote sensing - Measurement accuracy - Measurement precision - Optical detection - Sea surface skin temperature - Sea surface temperature (SST)

Classification code:443.1  Atmospheric Properties - 444.1  Surface Water - 471.1  Oceanography, General - 741.1  Light/Optics - 944.7  Radiation Measuring Instruments - 951  Materials Science

DOI:10.3788/gzxb20184711.1101001

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 19>

Accession number:20190106343309

Title:Design of Resolution Test Model for Three-dimensional Integral Imaging Display System

Authors:Wang, Jun-Fu (1); Zhang, Wen-Ge (1); Jiang, Xiao-Yu (1); Yan, Xing-Peng (1); Wang, Yi-Fei (1)

Author affiliation:(1) Department of Information and Communication Engineering, Army Armored Forces Academy, Beijing; 100072, China

Corresponding author:Jiang, Xiao-Yu(jiangxiaoyu2007@gmail.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1111002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The resolution measurement model of three-dimensional integral imaging display system is established, and the shape, scale and fringe width of the model are designed. The model can be used to measure the reconstructed depth of field and field angle of integral imaging display system. First, the parallax map is obtained by taking the test model from multiple angles according to the integral imaging technology. Then, the parallax image definition line is calibrated according to the method of the two-dimensional resolution test card. Finally, the composite image calculated by parallax images is loaded onto the integral imaging system and the the resolution of three-dimensional objects reconstructed by the system can be tested. Experimental results show that this design supports the observer to test the display resolution in different angles and depths, and quantifies the resolution of the integral imaging display system. The model contains 8-level resolution definition line, which basically meets the test range of current three-dimensional display system resolution and can be used to measure the reconstructed depth of field and field angle of integral imaging display system.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:26

Main heading:Three dimensional displays

Controlled terms:Geometrical optics - Image processing - Image resolution - Model buildings - Testing - Three dimensional computer graphics

Uncontrolled terms:Composite images - Display resolutions - Image definition - Integral imaging - Integral imaging systems - Resolution measurements - Resolution tests - Three-dimensional object

Classification code:723.2  Data Processing and Image Processing - 741.1  Light/Optics

DOI:10.3788/gzxb20184711.1111002

Funding Details: Number; Acronym; Sponsor: 201432; FANEDD; Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China - Number; Sponsor: 61775240; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 20>

Accession number:20190106343295

Title:Arc Measurement Method of Curved Surface Based on Monocular Vision System

Authors:Wu, Fu-Pei (1); Guo, Jia-Hua (1); Li, Sheng-Ping (1); Ye, Wei-Lin (1); Zhang, Xian-Min (2)

Author affiliation:(1) Department of Mechanical and Electronic Engineering, Shantou University, Shantou; Guangdong; 515063, China; (2) School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou; 510640, China

Corresponding author:Li, Sheng-Ping(spli@stu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1112002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A curved surface measurement method based on monocular vision system is proposed to measure the curved surface of the special-shaped parts. First, the monochromatic vision system which is composed of a tricolor LED ring structure light source and a three-color CCD color camera is used to collect a single color image that contains the surface characteristics of the measured surface. Secondly, the correlation of color distribution features of the images, the regular of gray level variation and characteristics of adjacent regions are analyzed, and the segmentation method is designed to complete the target surface segmentation. Then, the calculation equation of the measured surface height is derived based on the image model of the monocular vision system and the related parameters of the material and the experimental environment. Finally, the height of the measured points is reduced by solving the height accumulation component between adjacent pixels. On this basis, the surface curvature measurement model is established and the curved surface is measured. The surface curvature measurement experiments respectively for 3D printing surface samples, screw thread and SIM card slot are carried out based on the proposed method. Comparing with the laser triangulation measurement method results, it shows that the errors are all less than 3.6%, the measurement accuracy is 0.000 1 rad, and the time length of measuring is less than 0.6 s. The experimental results show that the proposed method has good adaptability for measuring object edge, height abrupt change, height gradual change and other types of surface. It can achieve high precision measurement and fast measurement speed.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Optical systems

Controlled terms:3D printers - Color - Image segmentation - Light sources - Screw threads - Surface measurement - Vision

Uncontrolled terms:3D reconstruction - Curved surfaces - Monocular vision - Optical technology - Visual measurements

Classification code:601.2  Machine Components - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 745.1.1  Printing Equipment - 943.2  Mechanical Variables Measurements

Numerical data indexing:Percentage 3.60e+00%, Time 6.00e-01s

DOI:10.3788/gzxb20184711.1112002

Funding Details: Number; Sponsor: 2018A0303130188; Natural Science Foundation of Guangdong Province - Number; Sponsor: 61573233; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 21>

Accession number:20190106343281

Title:Fabrication of Long Period Fibre Gratings by Femtosecond Laser Writing Directly and Its Spectral Characteristics

Authors:Zhang, Ya-Ni (1, 2, 3); Xi, Ya-Ru (1, 3); Jiang, Peng (1, 3); Xu, Qiang (1, 3); Wang, Chao-Jin (1, 3); Zhu, Yu-Yu (1, 3); Xue, Lu (1, 3)

Author affiliation:(1) School of Physics and Optoelectronics Technology, Baoji University of Arts &amp; Science, Baoji; Shaanxi; 721016, China; (2) School of Arts and Sciences, Shaanxi University of Science &amp; Technology, Xi'an; 710021, China; (3) Baoji Engineering Technology Research Center on Ultrafast Laser and New Materials, Baoji; Shaanxi; 721016, China

Corresponding author:Xi, Ya-Ru(739250338@qq.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1106001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The experimental system to write long-period fiber gratings was set up based on femtosecond laser pulses with a central wavelength 800 nm. In this system, the femtosecond laser pulses were induced in the fiber core of the normal SMF-28 by adopting a micro-objective of 20&times;, and the processing of writing long-period fiber gratings was monitored by adopting the horizontal and vertical dual-CCD video. The long-period fiber gratings with different period, different period number and different duty ratio were inscribed in no-hydrogen-loaded SMF-28 fiber. The experiment result shows that the maximum resonance peak loss of 11.65 dB will be generated at the wavelength of 1 300 nm and out-of-band loss is lower than 2 dB when the laser pulse energy is selected of 1.3 mW, the period of grating is 500 &mu;m and the duty ratio of grating is 0.6, and the resonant wavelength of grating is not apparent drift with the length of the grating. More further, the optimal spectral characteristics of grating can be designed through the adjustment of grating duty ratio, and the resonance peak will be changed from multi-peak to single peak.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:29

Main heading:Diffraction gratings

Controlled terms:Femtosecond lasers - Fibers - Laser pulses - Resonance - Ultrashort pulses

Uncontrolled terms:Coupled mode - Experimental system - Femtosecond laser writing - Long period fiber grating - Long-period fibre gratings - Microprocesses - Resonant wavelengths - Spectral characteristics

Classification code:741.3  Optical Devices and Systems - 744.1  Lasers, General - 931.1  Mechanics

Numerical data indexing:Decibel 1.17e+01dB, Decibel 2.00e+00dB, Power 1.30e-03W, Size 1.30e-06m, Size 5.00e-04m, Size 8.00e-07m

DOI:10.3788/gzxb20184711.1106001

Funding Details: Number; Sponsor: 11647008; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 22>

Accession number:20190106343299

Title:Frequency Stabilization of a Wideband Tunable Optoelectronic Oscillator Based on Intermediate Frequency Phase-locked Technique

Authors:Tong, Guo-Chuan (1); Zhou, Jin-Hai (1); Jin, Tao (1); Chi, Hao (1); Zhu, Xiang (1); Li, Dong (1); Zuo, Lu-Lu (1)

Author affiliation:(1) College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou; 310027, China

Corresponding author:Zhou, Jin-Hai(zhoujh@zju.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1123001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A scheme for improving the long-term stability of a wideband tunable optoelectronic oscillator based on intermediate frequency phase-locked loop technique is proposed. In the scheme, an external tunable local oscillator is used to down-convert the RF signal of the optoelectronic oscillator to generate an intermediate frequency signal, which is independent of the oscillating frequency of the optoelectronic oscillator. Phase-locking of the intermediate frequency signal to a stable reference source can improve the long-term stability of the wideband tuanble optoelectronic oscillator. The impact of the phase-locked loop on the phase noise performance of the optoelectronic oscillator is also analyzed. Experimental results show that the frequency tuning range of the optoelectronic oscillator is 5~15 GHz, the phase noise is -121.2 dBc/Hz at 10 kHz offset and the long-term stability is 6.9&times;10<sup>-11</sup>/10<sup>3</sup> s. It indicates that the proposed method can significantly improve the long-term stability of a wideband tunable optoelectronic oscillator.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Phase noise

Controlled terms:Convergence of numerical methods - Locks (fasteners) - Microwave oscillators - Optoelectronic devices - Phase locked loops - Stability

Uncontrolled terms:Frequency stabilization - Frequency tuning range - Intermediate frequencies - Intermediate frequency signals - Microwave Photonics - Opto-electronic oscillator - Oscillating frequencies - Phase noise performance

Classification code:701.2  Magnetism: Basic Concepts and Phenomena - 713.2  Oscillators - 713.5  Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 741.3  Optical Devices and Systems - 921.6  Numerical Methods

Numerical data indexing:Frequency 1.00e+04Hz, Frequency 5.00e+09Hz to 1.50e+10Hz

DOI:10.3788/gzxb20184711.1123001

Funding Details: Number; Sponsor: 61575171; National Natural Science Foundation of China - Number; Sponsor: 61675180; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 23>

Accession number:20190106343310

Title:Infrared Dim Target Detection Based on Temporal-spatial Non-local Similarity

Authors:Zhang, Su (1); An, Bo-Wen (1); Pan, Sheng-Da (1)

Author affiliation:(1) College of Information Engineering, Shanghai Maritime University, Shanghai; 201306, China

Corresponding author:Pan, Sheng-Da(sdpan@shmtu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1110001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to eliminate the influence of background clutter and noise in the infrared images for the detection of infrared dim targets at sea, an infrared image dim target detection method based on temporal-spatial non-local similarity is proposed. The method makes full use of the non-local auto-correlation of the sea surface background image patch between the infrared image sequences of adjacent frames and the similarity between non-local background image patch in the frame. Based on this characteristic, a temporal-spatial image patch model is introduced. The model is effectively solved by accelerating the proximal gradient method. The experimental results show that compared with the traditional infrared dim target detection method, the proposed method can not only preserve the feature of the target more effectively but also increase the peak signal to noise ratio of the detected infrared image by 1.2 times and improve the signal to clutter ratio by 1.8 times.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Image enhancement

Controlled terms:Clutter (information theory) - Gradient methods - Image processing - Infrared imaging - Signal to noise ratio - Surface waters

Uncontrolled terms:Background clutter - Dim target - Dim target detection - Infrared image sequence - Non-local similarities - Peak signal to noise ratio - Signal-to-clutter ratios - Spatial images

Classification code:444.1  Surface Water - 716.1  Information Theory and Signal Processing - 746  Imaging Techniques - 921.6  Numerical Methods

DOI:10.3788/gzxb20184711.1110001

Funding Details: Number; Sponsor: 41701523; National Natural Science Foundation of China - Number; Sponsor: 61302132; National Natural Science Foundation of China - Number; Sponsor: 61504078; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 24>

Accession number:20190106343289

Title:Inverse Synthetic Aperture Ladar Imaging Algorithm for Maneuvering Target

Authors:L&uuml;, Ya-Kun (1); Wu, Yan-Hong (1); Xue, Jun-Shi (2); Wang, Hong-Yan (2)

Author affiliation:(1) Department of Electronic and Optical Engineering, Space Engineering University, Beijing; 101416, China; (2) School of Space Information, Space Engineering University, Beijing; 101416, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1128003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To solve the problem of range dispersion and azimuth Doppler time-variation in echo when imaging maneuvering target with inverse synthetic aperture ladar, the accurate echo model of maneuvering target is built, and an imaging algorithm based on integral cubic phase function-fractional Fourier transform is proposed. In range compression, the integral cubic phase function is used to estimate the modulation frequency of the echo pulse quickly, and then the fractional Fourier transform is used to realize the range compression at the optimal rotation angle. In this way, the range dispersion is eliminated. After motion compensation, the integral cubic phase function-fractional Fourier transform is combined with the Clean technique to achieve the separation imaging of the strong and weak scattering points on each range cell, solving the problem of image defocusing due to the azimuth Doppler time-varying. Finally, the validity of the proposed method is verified by the simulation experiment of scatter point model.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Inverse problems

Controlled terms:Fourier transforms - Integral equations - Inverse transforms - Motion compensation - Optical radar - Synthetic apertures

Uncontrolled terms:CLEAN technique - Cubic phase functions - Fractional Fourier transforms - Maneuvering targets - Synthetic aperture ladar

Classification code:716.2  Radar Systems and Equipment - 921.2  Calculus - 921.3  Mathematical Transformations

DOI:10.3788/gzxb20184711.1128003

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 25>

Accession number:20190106343304

Title:Dynamic Evolution of Noncanonical Optical Vortex through Tilted Lens

Authors:Yan, Hong-Wei (1); Wang, Yang-Li (1)

Author affiliation:(1) Teaching and Research Section of Physics, Engineering University of CAPF, Xi'an; 710086, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1114003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:According to the generalized Huygens-Fresnel diffraction integral, the dynamic evolution of a noncanonical optical vortex with phase topological charge (topological charge) of m=+1 and +2 in the background of a Gaussian beam passing through a tilted lens is studied. It is found that after passing through the tilted lens, the noncanonical strength and topological charge of the noncanonical optical vortex with topological charge of m=+1 remain unchanged, while the noncanonical optical vortex with topological charge of m=+2 will split into two noncanonical optical vortices with the same noncanonical strength (the noncanonical strength is equal to the noncanonical strength of the noncanonical optical vortex with topological charge of +2 at the initial plane) and the same topological charge of m=+1 due to the influence of noncanonical strength. The position of the noncanonical optical vortex after passing through the tilted lens depends on the relative propagation distance, off-axis parameter, noncanonical parameters, tilt coefficients, waist width, and the sum of the topological charge remains unchanged during the propagation.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Vortex flow

Controlled terms:Diffraction - Gaussian beams - Lenses - Topology

Uncontrolled terms:Noncanonical strength - Optical vortices - Tilt coefficient - Tilted lens - Topological charges

Classification code:631.1  Fluid Flow, General - 711  Electromagnetic Waves - 741.3  Optical Devices and Systems - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI:10.3788/gzxb20184711.1114003

Funding Details: Number; Sponsor: 11547050; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 26>

Accession number:20190106343300

Title:High Detectivity and Broadband Organic Photodetectors

Authors:An, Tao (1); Gong, Wei (1)

Author affiliation:(1) College of Automation and Information Engineering, Xi'an University of Technology, Xi'an; 710048, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1123002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to achieve the full response of three primary colors(red, green, blue) of organic photodetectors and the improvement of devices performances, the spectral broadening of organic active layer based on tri-phase bulk heterojunction formed by Poly(3-hexylthiophene) (P3HT): [6, 6]-Phenyl-C<inf>61</inf>-butyric acid methyl ester (PC<inf>61</inf>BM) doped with narrow band material poly-{[4, 8-bis[(2-ethylhexyl)oxy]-benzo[1, 2-b: 4, 5-b']dithiophene-2, 6-diyl]-alt-[3-fluore-2-(octyloxy)cabonyl-thieno[3, 4-b]thiophene-4, 6-diyl]} (PBDT-TT-F) was investigated. Additionally, the dark current was reduced due to the increase of electron injection barrier by the replacement of anode buffer layer so as to improve the devices performances. The influence of PBDT-TT-F doping concentration and buffer layer thicknesses on devices optoelectronic performances was discussed systemly. On this basis, the photodetectors with 400~750 nm wide spectra was obtained. At -1 V bias, the linear dynamic range and the detectivity reached 81, 80, 81 dB and 2.7&times;10<sup>12</sup>, 2.0&times;10<sup>12</sup>, 2.6&times;10<sup>12</sup> Jones respectively under illumination of three primary colors. The results show that the absorption spectra of the active layer can be broadened by adding a small amount of spectral broadening material under the premise of maintaining the morphology and electrical properties of the original binary bulk heterojunction. Utilizing Molybdenum trioxide (MoO<inf>3</inf>) with optimized thickness to replace original Poly(3, 4-ethylenedioxythiophene)-poly(styrenesulfonate)dry re-dispersiblepellets] (PEDOT: PSS) anode buffer layer so as to further improve the performance. Hence, the linear dynamic range and the detectivity of the devices were enhanced obviously. The present study paves the way for high detectivity and broadband organic photodetectors based on tri-phase bulk heterojunction.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:25

Main heading:Photons

Controlled terms:Anodes - Buffer layers - Butyric acid - Conducting polymers - Heterojunctions - Molybdenum oxide - Photodetectors

Uncontrolled terms:Anode buffer layers - Broadband - Detectivity - Organic photodetector - Tri-phase bulk hetrojunction

Classification code:708.2  Conducting Materials - 714.1  Electron Tubes - 714.2  Semiconductor Devices and Integrated Circuits - 804  Chemical Products Generally - 804.1  Organic Compounds - 931.3  Atomic and Molecular Physics - 933.1  Crystalline Solids

Numerical data indexing:Decibel 8.10e+01dB, Size 4.00e-07m to 7.50e-07m, Voltage -1.00e+00V

DOI:10.3788/gzxb20184711.1123002

Funding Details: Number; Sponsor: 2015JM6267; Natural Science Foundation of Shaanxi Province

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 27>

Accession number:20190106343290

Title:Waveform Simulation of Spaceborne Laser Altimeter Echo Based on Fine Terrain

Authors:Liu, Ren (1, 2); Xie, Jun-Feng (1, 2); Mo, Fan (2); Xia, Xue-Fei (1, 2)

Author affiliation:(1) School of Geomatics, Liaoning Technical University, Fuxin; Liaoning; 123000, China; (2) Satellite Surveying and Mapping Application Center, NASG, Beijing; 100048, China

Corresponding author:Xie, Jun-Feng(junfeng_xie@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1128004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:For the performance analysis of the domestic spaceborne laser altimeter in the laboratory and in-orbit calibration technology improvement, the principle of laser waveform full-link simulation was studied in detail, and a full-link simulation method with the fine terrain and flow were designed by considering the in-orbit working environment of the spaceborne laser altimeter, as well as its echo simulation model of was deduced in detail. Then high-precision echo simulation was performed by laser beam splitting based on fine terrain. The Geoscience Laser Altimeter System (GLAS) is used for testing, and the high-precision airborne Lidar point cloud data is used to simulate the waveform of GLAS in flat and mountain terrains. The results show that the simulated waveform are used compared with the real data from GLAS, then the similarity between the simulation waveform and the real waveform is 0.985 in the flat terrain, as well as 0.921 in the mountain terrain. The proposed method and model can achieves high accuracy simulation of the spaceborne laser waveform for the flat areas.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:22

Main heading:Aneroid altimeters

Controlled terms:Landforms - Laser beams - Meteorological instruments - Orbits - Radio altimeters - Remote sensing - Waveform analysis

Uncontrolled terms:Actual terrain - Geoscience laser altimeter systems - In-orbit calibrations - Performance analysis - Satellite laser altimeters - Similarity - Space-borne laser altimeter - Wave forms

Classification code:443.2  Meteorological Instrumentation - 481.1  Geology - 716.3  Radio Systems and Equipment - 744.8  Laser Beam Interactions - 944.3  Pressure Measuring Instruments

DOI:10.3788/gzxb20184711.1128004

Funding Details: Number; Sponsor: 41571440; National Natural Science Foundation of China - Number; Sponsor: 41771360; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 28>

Accession number:20190106343288

Title:Application of Pyramid Sensor for Co-phasing Space Optical Interferometric Telescope

Authors:Yan, Zhao-Jun (1); Zheng, Li-Xin (1); Wang, Chao-Yan (1); Cai, Jian-Qing (1); Chen, Xin-Yang (1); Zhou, Dan (1)

Author affiliation:(1) The Astronomical Optical Instrument Group, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai; 200030, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1128002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An innovative piston error detecting and close loop correction method based on pyramid wavefront sensor was proposed for space optical interferometric telescope. Three different wavelengths are used in turn in the method, in which the pyramid sensor is used to measure the piston errors between sub-mirrors, and then the sub-mirrors are controlled to compensate the corresponding piston errors based on the real-time measurement results until the piston errors reach an integral multiple of half of the used wavelength. After that, the real values of piston error are calculated based the known data of wavelengths and quantities of piston compensation of sub-mirrors, and finally the piston errors can be controlled by closed loop correction. The proposed method was analyzed theoretically and researched by simulations in which a telescope with two sub-apertures was taken as research object. The results proved that the piston error between two sub-apertures can be soundly detected and corrected while the piston error is not more than 500 &mu;m. In addition, the novel method meets the precision of nanometer and has good repeatability.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Pistons

Controlled terms:Error compensation - Interferometry - Mirrors - Space telescopes

Uncontrolled terms:Astronomical optics - Closed-loop corrections - Co-phasing - Correction method - Integral multiples - Pyramid - Pyramid wave-front sensors - Real time measurements

Classification code:612.1.1  Internal Combustion Engine Components - 741.3  Optical Devices and Systems - 941.4  Optical Variables Measurements

Numerical data indexing:Size 5.00e-04m

DOI:10.3788/gzxb20184711.1128002

Funding Details: Number; Sponsor: 11403079; National Natural Science Foundation of China - Number; Sponsor: 11873078; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 29>

Accession number:20190106343308

Title:Application of Hybrid Light Transport Model in Forward Problems of Multispectral Cerenkov Luminescence Tomography

Authors:Ren, Qing-Yun (1); Hou, Yu-Qing (1); He, Xiao-Wei (1); Wang, Lin (1); Yi, Huang-Jian (1); He, Xue-Lei (1)

Author affiliation:(1) Key Laboratory for Radiomics &amp; Intelligent Sense of Xi'an, Northwest University, Xi'an; 710127, China

Corresponding author:Hou, Yu-Qing(houyuqin@nwu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1111001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:As the wide spectrum range of Cerenkov luminescence light leads to an extremely diverse optical properties of tissues, the simplified spherical harmonics approximation or diffusion equation based imaging model cannot balance accuracy with effectiveness. The adaptive hybrid simplified spherical harmonics with diffusion equation model is applied as a forward model for multispectral Cerenkov fluorescence tomography. To provide the perfect balance between accuracy and efficiency, based on the tissues optical properties, the proposed model can adaptively select an approximate equation to describe the Cerenkov luminescence light propagation, and give full play to the advantages of traditional model. The accuracy and efficiency of the proposed model are validated with both regular geometries and digital mouse model based simulations. Corresponding results reveal that a comparable accuracy and much less computation time are achieved compared with the simplified spherical harmonics model, a much better accuracy compared with the diffusion equation as well as better adaptability than simple combined models of simplified spherical harmonics and diffusion equation. The adaptive hybrid simplified spherical harmonics with diffusion equation model model is best suited as an optical transmission model for multispectral Cerenkov fluorescence tomography.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:28

Main heading:Light transmission

Controlled terms:Crack propagation - Diffusion - Efficiency - Fluorescence - Harmonic analysis - Histology - Light - Optical properties - Optical tomography - Partial differential equations  - Spheres - Tissue

Uncontrolled terms:Adaptive - Cerenkov - Light transport model - Multi-spectral - Tissue optic

Classification code:461.2  Biological Materials and Tissue Engineering - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 913.1  Production Engineering - 921.2  Calculus - 921.6  Numerical Methods - 951  Materials Science

DOI:10.3788/gzxb20184711.1111001

Funding Details: Number; Sponsor: 11571012; National Natural Science Foundation of China - Number; Sponsor: 61601363; National Natural Science Foundation of China - Number; Sponsor: 61601364; National Natural Science Foundation of China - Number; Sponsor: 61640418; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 30>

Accession number:20190106343283

Title:Performance of Oceanic Wireless Optical Communication Systems Based on Orbital Angular Momentum Multiplexing with Spatial Diversity

Authors:Yin, Xiao-Li (1); Sun, Zhi-Wen (1); Cui, Xiao-Zhou (1); Zheng, Zi-Jian (1); Chen, Xiao-Zheng (1); Guo, Yi-Lin (1); Liao, Huan-Yu (1); Liu, Guang-Yao (1)

Author affiliation:(1) Beijing Key Laboratory of Space-Ground Interconnection and Convergence, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing; 100876, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1106003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In oceanic wireless optical communication systems based on orbital angular momentum multiplexing, oceanic turbulence will bring the channel crosstalk. To solve the problem of channel crosstalk, a spatial diversity mitigation scheme is proposed. Random phase screen method is used to simulate phase perturbation caused by ocean turbulence and split-step transmission method is used to simulate the beam diffraction. Equal gain diversity combination is used to process signal at the receiver. 4-orbital angular momentum-multiplexed channels and 8-spatial diversity are used in the system. The influences of orbital angular momentum mode sets, oceanic turbulence strength and communication distance on the bit-error rate are investigated. Simulation results show that bit error rates decrease obviously with the modes spacing increases from 1 to 2 in the orbital angular momentum multiplexed sets. Performances of bit-error rates remain steady as modes spacing become larger. Bit-error rate will also increase with the increasing transmission distance and turbulence strength. Results show using diversity combination on orbital angular momentum-multiplexed systems can effectively mitigate the performance degradation from oceanic turbulence.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:19

Main heading:Bit error rate

Controlled terms:Angular momentum - Crosstalk - Errors - Multiplexing equipment - Optical communication - Signal receivers - Turbulence - Wireless telecommunication systems

Uncontrolled terms:Oceanic turbulence - Orbital angular momentum - Spatial diversity - Transmission distances - Wireless communications

Classification code:717.1  Optical Communication Systems - 723.1  Computer Programming

DOI:10.3788/gzxb20184711.1106003

Funding Details: Number; Sponsor: 61575027; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

<RECORD 31>

Accession number:20190106343282

Title:Fiber Grating Displacement Sensor Based on Elliptical Mechanical Amplification Structure

Authors:Lyu, Guo-Hui (1, 3); Zhou, Bo-Ning (1, 3); Wang, Chao-Zheng (1, 3); Wang, Ming-Yang (1, 3); Zhang, Yan (1, 3); Jiang, Xu (2)

Author affiliation:(1) College of Electronic Engineering, Heilongjiang University, Harbin; 150080, China; (2) College of Data Science and Technology, Heilongjiang University, Harbin; 150080, China; (3) Research Center for Fiber Optic Sensing Technology National Local Joint Engineering, Heilongjiang University, Harbin; 150080, China

Corresponding author:Jiang, Xu(1995042@hlju.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:11

Issue date:November 1, 2018

Publication year:2018

Article number:1106002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to solve the practical problem of low displacement sensitivity when a cantilever beam or deformed ring is used as an elastic deformation structure of a fiber Bragg grating displacement sensor, a new elliptical displacement amplification mechanism was chosen to amplify the mini-shifting of the displacement, and the displacement resolution of the sensor was adjusted by changing the mechanical size of the elliptical amplifier. When the length of the elliptical displacement amplifying structure is 60 mm, the width is 19. 8 mm, and the maximum width in the middle is 30 mm, the magnification of the mechanical displacement is amplified by 2 times. When the range changes from 0 to 100 nm, the resolution of the fiber Bragg grating displacement sensor measured in the experiment is 6.1 pm/mm, and the linear correlation coefficient of displacement and corresponding wavelength shift is 0.998 52. The sensor can be effectively applied to high-precision on-line monitoring for structural displacement of mechanical equipment and civil engineering.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Fiber amplifiers

Controlled terms:Fiber Bragg gratings - Fibers - Precision engineering

Uncontrolled terms:Deformation structure - Displacement amplification mechanisms - Displacement resolution - Displacement sensor - Linear correlation coefficient - Mechanical amplification - Mechanical displacements - Structural displacement

Classification code:744.4  Solid State Lasers

Numerical data indexing:Size 0.00e+00m to 1.00e-07m, Size 3.00e-02m, Size 6.00e-02m, Size 8.00e-03m

DOI:10.3788/gzxb20184711.1106002

Database:Compendex

Compilation and indexing terms, Copyright 2019 Elsevier Inc.

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