Dr. Shaoqing Wang Profile

Dr. Shaoqing Wang

at Shanghai Institute of Optics and Fine Mechanics

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Author

Publications (10)

Proceedings Article | 31 October 2016 Paper

Three dimensional identification card and applications

Changhe Zhou, Shaoqing Wang, Chao Li, Hao Li, Zhao Liu

Proceedings Volume 10022, 100220L (2016) https://doi.org/10.1117/12.2245680

KEYWORDS: 3D image processing, 3D displays, 3D metrology, Electronics, Cameras, Structured light, 3D modeling, Digital Light Processing, Eye, Computing systems

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Proceedings Article | 31 October 2016 Paper

Temporal speckle method for measuring three-dimensional surface of large-sized rough glass

Chao Li, Changhe Zhou, Shaoqing Wang, Xin Fan, Boquan Yang, Yancong Lu, Hao Li, Zhao Liu

Proceedings Volume 10022, 100220N (2016) https://doi.org/10.1117/12.2246077

KEYWORDS: Glasses, 3D metrology, Binary data, Speckle, Optical filters, Scattering, Cameras, Digital Light Processing, Interferometry, Image filtering

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Proceedings Article | 31 October 2016 Paper

Facial skin color measurement based on camera colorimetric characterization

Boquan Yang, Changhe Zhou, Shaoqing Wang, Xin Fan, Chao Li

Proceedings Volume 10022, 1002218 (2016) https://doi.org/10.1117/12.2245421

KEYWORDS: Skin, Cameras, Image processing, Spectrophotometry, Image enhancement, Algorithm development, RGB color model, Colorimetry, Detection and tracking algorithms, Lithium

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Proceedings Article | 31 October 2016 Paper

Design and analysis of broadband diffractive optical element for achromatic focusing

Shaoqing Wang, Changhe Zhou, Zhao Liu, Hao Li

Proceedings Volume 10022, 100221J (2016) https://doi.org/10.1117/12.2245833

KEYWORDS: Diffractive optical elements, Optical design, Chromatic aberrations, Algorithms, Diffraction, Polarization, Visible radiation, Holograms, Electromagnetism, Diffraction gratings

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Proceedings Article | 11 November 2014 Paper

Numerical study of coupled Dammann grating

Shaoqing Wang, Changhe Zhou, Shengbin Wei, Kun Liu, Xin Fan

Proceedings Volume 9271, 92712A (2014) https://doi.org/10.1117/12.2071602

KEYWORDS: Diffraction gratings, Diffraction, Optical design, Beam splitters, Algorithms, 3D metrology, Numerical analysis, Lithium, System on a chip, Americium

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Proceedings Article | 11 November 2014 Paper

Binocular three-dimensional measurement system using a Dammann grating

Kun Liu, Changhe Zhou, Shengbin Wei, Shaoqing Wang, Shubin Li, Yanyang Li, Jin Wang, Yancong Lu

Proceedings Volume 9271, 92710R (2014) https://doi.org/10.1117/12.2071368

KEYWORDS: 3D metrology, Cameras, Diffraction gratings, Diffraction, 3D scanning, 3D modeling, Clouds, Fiber optic illuminators, 3D acquisition, Semiconductor lasers

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Proceedings Article | 26 November 2012 Paper

3D measurement system with two detecting channels using structured light

Shengbin Wei, Changhe Zhou, Shaoqing Wang

Proceedings Volume 8556, 85560W (2012) https://doi.org/10.1117/12.999732

KEYWORDS: 3D metrology, Projection systems, Cameras, Clouds, Modulation, Corner detection, 3D modeling, Laser imaging, CCD cameras, Structured light

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Proceedings Article | 26 November 2012 Paper

Three-dimensional optical techniques using Dammann gratings

Changhe Zhou, Junjie Yu, Shaoqing Wang, Shengbin Wei

Proceedings Volume 8556, 85560Z (2012) https://doi.org/10.1117/12.999339

KEYWORDS: Zone plates, 3D metrology, 3D image processing, Computer generated holography, Cameras, Optical components, Femtosecond phenomena, 3D optical data storage, Eye, 3D scanning

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Proceedings Article | 17 November 2010 Paper

Application to the design of guide-mode resonance grating filter with using simulated annealing method

Jianyong Ma, Yon tao Fan, Changhe Zhou, Shaoqing Wang, Hongchao Cao

Proceedings Volume 7848, 784818 (2010) https://doi.org/10.1117/12.870147

KEYWORDS: Optical filters, Optical design, Reflection, Waveguides, Refractive index, Diffraction, Diffraction gratings, Algorithms, Optimization (mathematics), Reflectivity

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Although there are several well -known methods such as RCWA, FMM, for analyzing the diffraction properties of gratings, design of these optical elements with specified spectral properties is commonly a challenging problem. It is relatively not easy for the researchers to design narrow line-with diffraction filters based on guided mode resonance phenomenon with common diffraction algorithm. Simulated Annealing (SA) method is evolutionary, robust technique that has been widely utilized to design optical diffraction components. This method is inspired by the physical process of heating and controlled cooling of metal material to increase the size of its crystals and reduce their defects. The most distinctive features of this method lie in its powerful ability of convergence towards the global minimum in a reasonable computation time and the independence of the initial parameter values. In this paper, first, the physical basis of SA and its mathematical realization are introduced. Then, a Guided-Mode Resonant Grating (GMRG) filters with single layer is designed by using SA algorithm. The central wavelength of GMRG filter is locked at 532nm and its line-width is fixed at 1nm. The plane wave light radiates the grating from air cover with normal incidence. The optimized parameters are refractive indices and thicknesses of high and low material of grating, other parameters are grating period and fill factor of the grating. It is shown from our calculation that an excellent reflection spectrum with narrow line-width, high peak and low sideband can be obtained after optimizing the grating parameters. Next, a double layered GMRG filter with line-width of 4nm, which is relatively easy fabrication in experiment, is designed at central wavelength of 1064nm. The optimized parameters are grating period, groove depth, refractive index of waveguide layer and fill factor respectively. The grating substrate and waveguide layer are Sio2 and Hfo2 respectively, the grating structure is directly etched on the waveguide layer. The above grating values should be included in reasonable ranges in consideration of grating fabrication in our experiment condition. It is demonstrated from the calculations with the parameters obtained from SA optimization algorithm that the peak diffraction efficiency is more than 99% at central wavelength 1064nm and the sideband reflection is depressed at the level bellow 5% in a large wavelength range. Moreover, the parameters of a triple layer GMRG filter structure are also provided with this powerful method. Meanwhile, the results found by SA method are compared with RCWA theory.

Proceedings Article | 28 November 2007 Paper

Parameter optimization of optically excited microresonator by a semiconductor laser subject to optical feedback

Shaoqing Wang, Xiangzhao Wang, Yingming Liu, Bingjie Huang, Hua Wang

Proceedings Volume 6724, 67240L (2007) https://doi.org/10.1117/12.782522

KEYWORDS: Semiconductor lasers, Microresonators, Silicon, Laser optics, Modulation, Chromium, Aluminum, Gold, Silver, Silicon films

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Showing 5 of 10 publications

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