Prof. Yu Wu Profile

Prof. Yu Wu

at Univ of Electronic Science and Technology of China

SPIE Involvement:

Author

Publications (29)

Proceedings Article | 8 June 2017 Paper

Fiber interrogated and graphene enhanced Brillouin optomechanical microresonator for ultra-sensitive gas detection

B. Yao, C. Yu, Y. Wu, S. Huang, H. Wu, Y. Gong, Y. Chen, Y. Rao

Proceedings Volume 10323, 103239R (2017) https://doi.org/10.1117/12.2276137

KEYWORDS: Graphene, Microresonators, Oxides, Microfluidics, Environmental sensing, Sensors, Biomedical optics, Photodetectors

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Proceedings Article | 23 April 2017 Paper

Dual-mode optofluidic flow rate sensor

Yuan Gong, Liming Qiu, Chenlin Zhang, Yu Wu, Yun-Jiang Rao, Gang-Ding Peng

Proceedings Volume 10323, 103236W (2017) https://doi.org/10.1117/12.2264101

KEYWORDS: Sensors, Fiber optics sensors, Optical manipulation, Feedback signals, Microfluidics, Waveguides, Single mode fibers, Laser damage threshold, Liquids, Signal detection

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Proceedings Article | 23 April 2017 Paper

Optofluidic microring flowmeter based on heat transfer effect

Yuan Gong, Minglei Zhang, Chaoyang Gong, Yu Wu, Yunjiang Rao, Xudong Fan

Proceedings Volume 10323, 103235U (2017) https://doi.org/10.1117/12.2262995

KEYWORDS: Microfluidics, Microrings, Resonators, Thermal effects, Sensors, Capillaries, Laser resonators, Tunable lasers, Fiber coupled lasers, Single mode fibers

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Proceedings Article | 23 April 2017 Paper

Partially reduced graphene oxide based FRET on fiber optic interferometer for biochemical detection

B. C. Yao, Y. Wu, C. B. Yu, J. R. He, Y. J. Rao, Y. Gong, Y. F. Chen, Y. R. Li

Proceedings Volume 10323, 1032325 (2017) https://doi.org/10.1117/12.2263182

KEYWORDS: Fluorescence resonance energy transfer, Graphene, Cadmium, Oxides, Interferometers, Fiber optics, Sensors, Ions, Fiber optics sensors, Luminescence

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Proceedings Article | 23 April 2017 Paper

Highly sensitive fiber optic Fabry-Perot geophone with graphene coated PMMA membrane

Y. Wu, F. Wu, C. Li, J. H. Zhou, Y. J. Rao, Y. F. Chen, C. B. Yu

Proceedings Volume 10323, 103233O (2017) https://doi.org/10.1117/12.2265299

KEYWORDS: Signal detection, Reflectivity, Single mode fibers, Fiber optics sensors, Fabry–Perot interferometers, Graphene, Fiber optics, Polymethylmethacrylate, Interferometry, Electromagnetic interference

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Proceedings Article | 9 December 2016 Paper

Enzyme catalyzed optofluidic biolaser for sensitive ion concentration detection

Yuan Gong, Chaoyang Gong, Maung Kyaw Khaing Oo, Yu Wu, Yunjiang Rao, Xudong Fan

Proceedings Volume 10013, 100131S (2016) https://doi.org/10.1117/12.2244668

KEYWORDS: Ions, Mirrors, Luminescence, Capillaries, Laser damage threshold, Laser resonators, Laser applications, Pulsed laser operation, Optical filters, Signal detection

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Proceedings Article | 25 August 2015 Presentation + Paper

Optical manipulation of single microparticle for microfluidic flow rate sensing

Yuan Gong, Yu Wu, Gangding Peng, Qunfeng Liu, Chenlin Zhang, Yunjiang Rao

Proceedings Volume 9548, 954813 (2015) https://doi.org/10.1117/12.2189730

KEYWORDS: Microfluidics, Single mode fibers, Sensors, Optical manipulation, Light scattering, Scattering, Laser optics, Optical fibers, Optical sensing, Fiber optic communications

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Proceedings Article | 11 November 2014 Paper

Graphene-coated microfiber Bragg grating for ammonia gas sensing

Anqi Zhang, Yu Wu, Baicheng Yao, Yuan Gong, Yunjiang Rao

Proceedings Volume 9274, 92740G (2014) https://doi.org/10.1117/12.2073577

KEYWORDS: Graphene, Fiber Bragg gratings, Signal attenuation, Refractive index, Sensors, Waveguides, Biosensing, Structural sensing, Carbon, Chemical species

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Proceedings Article | 2 June 2014 Paper

Graphene-coated microfiber FBG for highly sensitive gas sensing

Bai-Cheng Yao, Anqi Zhang, Cai-bin Yu, Yun-Jiang Rao, Yang Cheng, Yuan Gong, Yu Wu

Proceedings Volume 9157, 915748 (2014) https://doi.org/10.1117/12.2058502

KEYWORDS: Graphene, Fiber Bragg gratings, Sensors, Reflection, Chemical analysis, Gas sensors, Refractive index, Adsorption, Biological and chemical sensing, Signal attenuation

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Proceedings Article | 2 June 2014 Paper

Highly sensitive gas sensor based on graphene/microfiber hybrid waveguide with Mach-Zehnder interferometer

Baicheng Yao, Yang Cheng, Anqi Zhang, Yun-Jiang Rao, Yuan Gong, Yu Wu

Proceedings Volume 9157, 915747 (2014) https://doi.org/10.1117/12.2058501

KEYWORDS: Graphene, Gas sensors, Waveguides, Sensors, Mach-Zehnder interferometers, Magnesium fluoride, Chemical analysis, Single mode fibers, Raman spectroscopy, Molecules

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Proceedings Article | 2 June 2014 Paper

Field test of a fully distributed fiber optic intrusion detection system for long-distance security monitoring of national borderline

Zinan Wang, Fei Peng, Zhengpu Peng, Xiaoyu Li, Yu Wu, Yunjiang Rao, Huijuan Wu

Proceedings Volume 9157, 915790 (2014) https://doi.org/10.1117/12.2058504

KEYWORDS: Fiber optics, Computer intrusion detection, Fiber optics tests, Optical fibers, Sensing systems, Temperature metrology, Intelligence systems, Environmental sensing, Signal processing, Fiber optic communications

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Proceedings Article | 15 October 2013 Paper

A novel fiber-optical vibration defending system with on-line intelligent identification function

Huijuan Wu, Xin Xie, Hanyu Li, Xiaoyu Li, Yu Wu, Yuan Gong, Yunjiang Rao

Proceedings Volume 8924, 89241P (2013) https://doi.org/10.1117/12.2034275

KEYWORDS: Fiber Bragg gratings, Sensors, Fiber optics, Feature extraction, Defense systems, Intelligence systems, Sensing systems, Sensor networks, Signal detection, Artificial neural networks

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Proceedings Article | 15 October 2013 Paper

Determination of complex refractive index of graphene waveguide by microfiber knot sensor

Baicheng Yao, Yu Wu, Yang Cheng, Yunjiang Rao, Yuan Gong, Zegao Wang, Yuanfu Chen

Proceedings Volume 8924, 89241U (2013) https://doi.org/10.1117/12.2034233

KEYWORDS: Graphene, Waveguides, Magnesium fluoride, Refractive index, Sensors, Light wave propagation, Single mode fibers, Thin films, Modulation, Thin film devices

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Proceedings Article | 15 October 2013 Paper

Graded-index fiber tip optical tweezers

Yuan Gong, Ai-Yan Ye, Yu Wu, Yunjiang Rao, Yao Yao, Song Xiao

Proceedings Volume 8924, 892409 (2013) https://doi.org/10.1117/12.2033669

KEYWORDS: Optical fibers, Optical tweezers, Single mode fibers, Yeast, Multimode fibers, Graded index fibers, Etching, Wet etching, Numerical simulations, Optical simulations

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Proceedings Article | 10 October 2013 Paper

An effective signal separation and extraction method using multi-scale wavelet decomposition for phase-sensitive OTDR system

Huijuan Wu, Xiaoyu Li, Hanyu Li, Yuan Gong, Yu Wu, Yunjiang Rao

Proceedings Volume 8916, 89160Z (2013) https://doi.org/10.1117/12.2035836

KEYWORDS: Wavelets, Time-frequency analysis, Linear filtering, Sensing systems, Environmental sensing, Signal detection, Information security, Interference (communication), Safety, Discrete wavelet transforms

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Phase-sensitive Optical-Time-Domain Reflectometry (OTDR) system is a typical distributed fiber-optic sensing technology to detect and locate multiple dynamic disturbances from the outside, which provides a cost-effective and highly sensitive solution especially for monitoring long or ultra-long perimeters. However, the system is liable to be interfered by laser frequency drifts and environmental noises due to its phase sensitivity. The fluctuant and time-varying backgrounds severely obscure real intrusion signals, which always cause bad detection results or high Nuisance Alarm Rates (NARs). In this paper, an effective signal separation method is proposed to extract true intrusion information from the complicated noisy backgrounds of phase-sensitive OTDR system. The sensing signal in the time-domain at each spatial point is obtained by accumulating the changing trails at different moments. Multi-scale wavelet decomposition is employed on the temporal signal to get the detailed components at different scales. By selectively recombining the scale components, it can easily extract the real intrusion signal, and separate the fluctuant frequency-drift induced phase noises, and the time-varying sound or other interferences caused by the air movements, which are respectively located at different time-frequency components. Moreover, the experimental results show that the event type could be divided and discerned from the time-frequency energy distribution at different scale. Thus nuisance and false alarms in practical applications of phase-sensitive OTDR system can be decreased significantly by this way of signal separation and extraction. This technique provides a useful solution for the intrusion detection and identification of the phase-sensitive OTDR in complicated environments, and paves the way for many important applications such as long perimeter security, oil or gas pipe safety monitoring, large-scale structure health detection and fault diagnosis and so on.

Proceedings Article | 29 August 2013 Paper

Performance evaluation of temperature-compensated FBG pressure sensor

Yuan Gong, Yun-Jiang Rao, Ting Fu, Yu Wu, Yao-Yuan Ma, Wen-Qian Niu

Proceedings Volume 8914, 89140M (2013) https://doi.org/10.1117/12.2033673

KEYWORDS: Sensors, Fiber Bragg gratings, Temperature metrology, Sensor performance, Environmental sensing, Fiber optics sensors, Optical fibers, Packaging, Environmental monitoring, Optical sensing

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Proceedings Article | 7 November 2012 Paper

A highly sensitive and fast response molecular sensor based on graphene coated microfiber

Baicheng Yao, Yu Wu, Yuan Gong, Yunjiang Rao

Proceedings Volume 8421, 842186 (2012) https://doi.org/10.1117/12.975251

KEYWORDS: Graphene, Sensors, Molecules, Signal attenuation, Refractive index, Waveguides, Fiber optics sensors, Photonics, Absorption, Modulation

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Proceedings Article | 7 November 2012 Paper

Field trials of fiber Bragg grating settlement sensors in high-speed railways

Xianglin Lu, Dengyong Li, Yu Wu, Yuan Gong, Yao Yao, Li Liu, Yunjiang Rao, Xiangliang Zheng, Zhong Deng, Lei Du, Song Xiao

Proceedings Volume 8421, 8421BL (2012) https://doi.org/10.1117/12.975243

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Optical fibers, Sensing systems, Sensor performance, Refractive index, Fiber optics sensors, Lithium, Novel fiber development

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Proceedings Article | 26 October 2012 Paper

Graphene-based microfiber gas sensor

Bai-Cheng Yao, Yu Wu, Yang Chen, Xiu-Ping Liu, Yuan Gong, Yun-Jiang Rao

Proceedings Volume 8421, 8421CD (2012) https://doi.org/10.1117/12.2013416

KEYWORDS: Graphene, Signal attenuation, Gas sensors, Sensors, Molecules, Refractive index, Fiber optics sensors, Modulation, Liquids, Crystals

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Proceedings Article | 17 October 2012 Paper

Real-time activity identification in a smart FBG-based fiber-optic perimeter intrusion detection system

Yu Wu, Huijuan Wu, Yunjiang Rao, Shanshan Li, Xianglin Lu

Proceedings Volume 8421, 84215B (2012) https://doi.org/10.1117/12.975249

KEYWORDS: Principal component analysis, Fiber optics, Computer intrusion detection, Signal processing, Fiber Bragg gratings, Feature extraction, Databases, Telecommunications, Sensors, Signal detection

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Proceedings Article | 31 January 2012 Paper

A sensitivity enhanced gas sensor based on carbon nanotubes around microfiber

Lan Jia, Feiya Yang, Yu Wu, Baicheng Yao, Yunjiang Rao

Proceedings Volume 8351, 835120 (2012) https://doi.org/10.1117/12.916028

KEYWORDS: Molecules, Gas sensors, Absorption, Refractive index, Dielectrics, Carbon nanotubes, Coating, Gases, Liquids, Sensors

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Proceedings Article | 18 May 2011 Paper

A novel FBG-based fence with high sensitivity and low nuisance alarm rate

Yunjiang Rao, Yu Wu, Shanshan Li, Xianglin Lu, Huijuan Wu

Proceedings Volume 7753, 77537R (2011) https://doi.org/10.1117/12.884920

KEYWORDS: Sensors, Signal detection, Fiber Bragg gratings, Computer intrusion detection, Environmental sensing, Signal processing, Sensor networks, Fiber optics, Fiber optics sensors, Network security

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Proceedings Article | 17 May 2011 Paper

Interferometric humidity sensors based on microfiber knot resonators

Yuan Gong, Yunjiang Rao, Yu Wu, TianHu Zhang

Proceedings Volume 7753, 77531M (2011) https://doi.org/10.1117/12.884918

KEYWORDS: Humidity, Sensors, Fiber optics sensors, Resonators, Polymethylmethacrylate, Interferometry, Silica, Molecules, Fiber optics, Coating

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Proceedings Article | 17 May 2011 Paper

Fiber-optic Fabry-Perot sensor based on graded-index multimode fiber: numerical simulations and experiments

Yu Wu, Yu Guo, Yun-Jiang Rao, Yuan Gong, Tian Zhao

Proceedings Volume 7753, 775315 (2011) https://doi.org/10.1117/12.884856

KEYWORDS: Sensors, Refractive index, Reflectivity, Fiber optics sensors, Single mode fibers, Numerical simulations, Fabry–Perot interferometers, Multimode fibers, Fiber optics, Water

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Proceedings Article | 17 May 2011 Paper

Microscopic multiple-point temperature sensing based on microfiber double-knot resonators

Yu Wu, Yunjiang Rao, Yihuai Chen, Tianhu Zhang, Yuan Gong

Proceedings Volume 7753, 77531L (2011) https://doi.org/10.1117/12.884991

KEYWORDS: Temperature metrology, Resonators, Sensors, Refractive index, Near field optics, Structural sensing, Fiber optics sensors, Silica, Single mode fibers, Optical sensing

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SPIE Journal Paper | 1 January 2010

Novel high sensitivity accelerometer based on a microfiber loop resonator

Chang-Lun Hou, Yu Wu, Xu Zeng, Shuangshuang Zhao, Qiaofen Zhou, Guoguang Yang

OE, Vol. 49, Issue 01, 014402, (January 2010) https://doi.org/10.1117/12.10.1117/1.3294883

KEYWORDS: Silicon, Resonators, Refractive index, Optical engineering, Sensors, Ultraviolet radiation, Etching, 3D modeling, Photography, Ferroelectric materials

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Proceedings Article | 5 October 2009 Paper

MOEMS accelerometer based on microfiber knot resonator

Yu Wu, Guo-Guang Yang, Xu Zeng, Yun-Jiang Rao, Chang-Lun Hou

Proceedings Volume 7503, 75036U (2009) https://doi.org/10.1117/12.835344

KEYWORDS: Resonators, Microopto electromechanical systems, Oxides, Sensors, Microelectromechanical systems, Silicon, Polymers, Semiconducting wafers, Electronics, Deep reactive ion etching

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Proceedings Article | 5 October 2009 Paper

Miniature fiber-optic temperature sensors based on silica/polymer microfiber knot resonators

Yu Wu, Yi-Huai Chen, Yun-Jiang Rao

Proceedings Volume 7503, 750359 (2009) https://doi.org/10.1117/12.835313

KEYWORDS: Temperature sensors, Resonators, Sensors, Fiber optics sensors, Silica, Polymers, Fiber optics, Temperature metrology, Optical fibers, Polymeric sensors

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Proceedings Article | 5 October 2009 Paper

Micro fiber-optic Fabry-Perot interferometer fabricated by chemical etching of Er-doped fiber

Yu Wu, Yun-Jiang Rao, Yuan Gong, Zeng-Ling Ran, Yu Guo

Proceedings Volume 7503, 75033A (2009) https://doi.org/10.1117/12.835338

KEYWORDS: Etching, Sensors, Single mode fibers, Wet etching, Fiber optics, Cladding, Fiber optics sensors, Fabry–Perot interferometry, Temperature metrology, Erbium

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Showing 5 of 29 publications

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