Dr. Zhonghua Ou Profile

Dr. Zhonghua Ou

at Univ of Electronic Science and Technology of China

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 10 May 2019 Paper

Information extraction of vibration based on Ф-OTDR vibration sensing system using different signal processing algorithms

Wei Yin, Zhonghua Ou, Yong Liu, Xuechao Pei

Proceedings Volume 11068, 110682P (2019) https://doi.org/10.1117/12.2524759

KEYWORDS: Signal detection, Signal processing, Sensing systems, Signal to noise ratio, Filtering (signal processing), Rayleigh scattering, Heterodyning

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SPIE Journal Paper | 7 April 2015

Simultaneous and signal-to-noise ratio enhancement extraction of vibration location and frequency information in phase-sensitive optical time domain reflectometry distributed sensing system

Huimin Yue, Bo Zhang, Yuxiang Wu, Biyu Zhao, Jianfeng Li, Zhonghua Ou, Yong Liu

OE, Vol. 54, Issue 04, 047101, (April 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.4.047101

KEYWORDS: Signal to noise ratio, Backscatter, Fourier transforms, Spatial resolution, Sensing systems, Reflectometry, Signal processing, Ferroelectric materials, Data acquisition, Interference (communication)

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Proceedings Article | 18 September 2014 Paper

High-accuracy inspection of defects and profile of wafers by phase measuring deflectometry

Yuxiang Wu, Huimin Yue, Biyu Zhao, Zhonghua Ou, Yong Liu

Proceedings Volume 9282, 928208 (2014) https://doi.org/10.1117/12.2067887

KEYWORDS: Semiconducting wafers, Inspection, Wafer inspection, Defect inspection, Deflectometry, Spatial resolution, Fringe analysis, Phase shift keying, Photovoltaics, Defect detection

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Proceedings Article | 18 September 2014 Paper

Accuracy enhancement of three-dimensional surface shape measurement using curvelet transform

Huimin Yue, Yuxiang Wu, Zhonghua Ou, Yong Liu, Biyu Zhao

Proceedings Volume 9282, 92820D (2014) https://doi.org/10.1117/12.2068418

KEYWORDS: Denoising, Wavelet transforms, Fringe analysis, 3D image processing, Fourier transforms, 3D metrology, Image processing, Image analysis, Image denoising, Projection systems

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Proceedings Article | 29 August 2013 Paper

Study of the polarization maintaining optical fiber beat length variation with external force

Zhonghua Ou, Ping Sun, Yu Chen, Jian-feng Li, Yong Liu, Huimin Yue, Zhiyong Dai, Lixun Zhang

Proceedings Volume 8914, 89140T (2013) https://doi.org/10.1117/12.2034285

KEYWORDS: Polarization maintaining fibers, Optical fibers, Sagnac interferometers, Polarization, Sensors, Birefringence, Optical sensing, Fiber optic communications, Optical communications, Numerical analysis

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Proceedings Article | 22 June 2013 Paper

Carrier frequency removal in phase measuring deflectometry with non-telecentric imaging

Yuxiang Wu, Lei Song, Biyu Zhao, Zhonghua Ou, Yong Liu, Huimin Yue

Proceedings Volume 8769, 87691L (2013) https://doi.org/10.1117/12.2018711

KEYWORDS: Fringe analysis, Zernike polynomials, Mirrors, Deflectometry, LCDs, CCD cameras, Error analysis, Computer simulations, Phase shift keying, Complex systems

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Proceedings Article | 13 November 2010 Paper

Optical fiber sensors for landslide monitoring

Xiaoxia Zhang, Yong Liu, Yongzhi Liu, Zhonghua Ou, Zengshou Peng, Jianfeng Li, Zhiyong Dai

Proceedings Volume 7844, 78440D (2010) https://doi.org/10.1117/12.873913

KEYWORDS: Landslide (networking), Fiber optics sensors, Sensors, Spatial resolution, Polarization, Sensing systems, Fiber lasers, Phase modulation, Modulators, Backscatter

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Proceedings Article | 10 February 2009 Paper

Research of narrow line-width Er3+-doped fiber ring laser with FBG F-P etalon and FBG Sagnac loop

Lixun Zhang, Zhonghua Ou, Yongzhi Liu, Zhiyong Dai, Bo Wu, Zengshou Peng

Proceedings Volume 7158, 71581F (2009) https://doi.org/10.1117/12.811021

KEYWORDS: Fiber Bragg gratings, Fiber lasers, Fabry–Perot interferometers, Semiconductor lasers, Hole burning spectroscopy, Stereolithography, Optical filters, Sensing systems, Erbium, Single mode fibers

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Proceedings Article | 9 February 2009 Paper

Stable narrow linewidth ring fiber laser with a passive fiber Bragg grating Fabry-Perot etalon and a fiber saturable absorber

Zhonghua Ou, Zengshou Peng, Bo Wu, Yongzhi Liu, Zhiyong Dai

Proceedings Volume 7158, 715817 (2009) https://doi.org/10.1117/12.806925

KEYWORDS: Fiber Bragg gratings, Fiber lasers, Fabry–Perot interferometers, Spatial light modulators, Reflectivity, Reflectors, Spectrum analysis, Fiber optics sensors, Wavelength tuning, Optical isolators

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Proceedings Article | 3 February 2009 Paper

Research of surface plasma resonance optical fiber hydrogen sensor

Yongzhi Liu, Zengshou Peng, Dejun Chen, Zhonghua Ou, Zhiyong Dai, Xiaowei Guo

Proceedings Volume 7157, 715716 (2009) https://doi.org/10.1117/12.807109

KEYWORDS: Hydrogen, Head, Plasma, Sensors, Palladium, Optical fibers, Multimode fibers, Refractive index, Manufacturing, Thin films

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Proceedings Article | 3 February 2009 Paper

A high precision metrology method and system for thin film's parameters based on reflectance spectrum

Zhiyong Dai, Lixun Zhang, Zhonghua Ou, Zengshou Peng, Yongzhi Liu

Proceedings Volume 7160, 71602P (2009) https://doi.org/10.1117/12.807076

KEYWORDS: Thin films, Reflectivity, Metrology, Reflection, Data modeling, Refractive index, Spectroscopy, Computing systems, Error analysis, Zinc

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Proceedings Article | 16 May 2008 Paper

Research on high-resolution distributed fiber optic stress sensor for landslide monitoring

Zhonghua Ou, Yongzhi Liu, Ce Zhou, Zhiyong Dai, Lixun Zhang

Proceedings Volume 7004, 70042T (2008) https://doi.org/10.1117/12.786027

KEYWORDS: Landslides, Fiber optics sensors, Sensors, Fiber optics, Modulators, Polarization, Spatial resolution, Signal processing, Michelson interferometers, Optical sensing

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Proceedings Article | 16 May 2008 Paper

Measurement of spontaneous Brillouin scattering in optical fiber with a fiber Bragg grating Sagnac loop

Zhiyong Dai, Lixun Zhang, Zhonghua Ou, Yongzhi Liu

Proceedings Volume 7004, 70043Z (2008) https://doi.org/10.1117/12.786070

KEYWORDS: Fiber Bragg gratings, Scattering, Optical filters, Rayleigh scattering, Sensing systems, Light scattering, Optical fibers, Interferometers, Scatter measurement, Digital signal processing

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Showing 5 of 13 publications

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