Prof. Xuping Zhang Profile

Prof. Xuping Zhang

at Nanjing Univ

SPIE Involvement:

Conference Chair | Conference Program Committee | Symposium Chair | Editor | Author

Publications (62)

SPIE Conference Volume | January 24, 2018

2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications

PROCEEDINGS ARTICLE | January 10, 2018

Measurement of multiple vibration points by using POTDR

Proc. SPIE. 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications

KEYWORDS: Spectrum analysis, Polarization, Sensors, Fiber optics sensors, Data acquisition, Reflectometry, Data processing, Spatial resolution, Signal detection

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PROCEEDINGS ARTICLE | January 10, 2018

Precise sample preconcentration based on plasmon-assisted optical manipulation for a bead-based Raman biosensor

Proc. SPIE. 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications

KEYWORDS: Gold, Plasmonics, Microfluidics, Polarization, Nanoparticles, Particles, Biosensors, Raman spectroscopy, Lab on a chip, Optical manipulation

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PROCEEDINGS ARTICLE | January 10, 2018

An event recognition method for fiber distributed acoustic sensing systems based on the combination of MFCC and CNN

Proc. SPIE. 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications

KEYWORDS: Convolutional neural networks, Pattern recognition, Feature extraction, Fiber optics sensors, Sensing systems, Acoustics, Signal detection, Statistical modeling, Systems modeling

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SPIE Journal Paper | August 19, 2017

Phase sensitive distributed vibration sensing based on ultraweak fiber Bragg grating array using double-pulse

Liu, Tao , Wang, Feng , Zhang, Xuping , Zhang, Lin , Yuan, Quan , Liu, Yu , Yan, Zhijun

OE Vol. 56 Issue 08

KEYWORDS: Reflectivity, Signal to noise ratio, Fiber Bragg gratings, Signal detection, Sensing systems, Optical engineering, Spatial resolution, Nonlinear optics, Reflectometry, Communication engineering

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PROCEEDINGS ARTICLE | February 17, 2017

Volumetric vessel reconstruction method for absolute blood flow velocity measurement in Doppler OCT images

Proc. SPIE. 10053, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXI

KEYWORDS: Doppler effect, Optical coherence tomography, Image segmentation, Particles, Laser scattering, Arteries, Image analysis, Biology, Functional imaging, Blood circulation, Hemodynamics, Velocity measurements, Doppler tomography

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SPIE Conference Volume | January 25, 2017

Optoelectronic Devices and Integration VI

PROCEEDINGS ARTICLE | October 31, 2016

A distributed optical fiber sensing system for dynamic strain measurement based on artificial reflector

Proc. SPIE. 10019, Optoelectronic Devices and Integration VI

KEYWORDS: Signal to noise ratio, Optical fibers, Reflectors, Ferroelectric materials, Avalanche photodetectors, Linear filtering, Sensing systems, Aluminum, Connectors, Amplitude modulation

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Phase sensitive optical time domain reflectometry (Φ-OTDR) has been widely used in many applications for its distributed sensing ability on weak disturbance all along the sensing fiber. However, traditional Φ-OTDR cannot make quantitative measurement on the external disturbance due to the randomly distributed position and reflectivity of scatters within the optical fiber. Recently, some methods have been proposed to realize quantitative measurement of dynamic strain. In these literatures, the fiber with or without FBGs in practice was easily damaged and with difficulty of maintenance. PZT is employed to generate strain event in the fiber. There is a large gap compared with the real detecting environment, which will not reveal the full performance of the sensing system. In this paper, a distributed optical fiber sensing (DOFS) system for dynamic strain measurement based on artificial reflector is proposed and demonstrated experimentally. The fiber under test (FUT) is composed by four 20-meter long single mode optical fiber patch cords (OFPCs), which are cascaded with ferrule contactor/physical contact (FC/PC) connectors via fiber flanges. The fiber facet of FC/PC connector forms an artificial reflector. When the interval between the two reflectors is changed, the phase of the interference signal will also be changed. A symmetric 3×3 coupler with table-look-up scheme is introduced to discriminate the phase change through interference intensity. In our experiment, the center 10m section of the second OFPC is attached to the bottom of an aluminum alloy plate. An ordinary loudspeaker box was located on the top of the aluminum alloy plate. The dynamic strain generated by the loudspeaker box is transmitted from the aluminum alloy plate to the OFPC. Experimental results show that the proposed method has a good frequency response characteristic up to 3.2 kHz and a linear intensity response of R2=0.9986 while the optical probe pulse width and repetition rate were 100ns and 10 kHz respectively. Meanwhile, triangle and cosine amplitude-modulated (AM) dynamic strain applied on the fiber are successfully discriminated. The artificial reflectors based on FC/PCs were easily assembled and maintained, and the method of vibration transmission closely resembled the real circumstance than PZT. Therefore, these advantages will extend the potential of this Φ-OTDR technology in structure health monitoring.

SPIE Journal Paper | September 6, 2016

Enhanced ν-optical time domain reflectometry using gigahertz sinusoidally gated InGaAs/InP single-photon avalanche detector

Zhang, Xuping , Shi, Yuanlei , Shan, Yuanyuan , Sun, Zhenhong , Qiao, Weiyan , Zhang, Yixin

OE Vol. 55 Issue 09

KEYWORDS: Optical engineering, Spatial resolution, Sensors, Reflectometry, Single photon detectors, Time metrology, Pulsed laser operation, Single mode fibers, Quantum efficiency, Connectors

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SPIE Journal Paper | July 21, 2016

Polarization dependence of phase-sensitive optical time-domain reflectometry and its suppression method based on orthogonal-state of polarization pulse pair

Zhang, Yixin , Xu, Yemian , Shan, Yuanyuan , Sun, Zhenhong , Zhu, Fan , Zhang, Xuping

OE Vol. 55 Issue 07

KEYWORDS: Polarization, Birefringence, Reflectometry, Sensing systems, Optical engineering, Signal to noise ratio, Sun, Fluctuations and noise, Interference (communication), Phase modulation

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SPIE Journal Paper | May 9, 2016

Enhanced Φ-OTDR system for quantitative strain measurement based on ultra-weak fiber Bragg grating array

Zhang, Xuping , Guo, Zheng , Shan, Yuanyuan , Sun, Zhenhong , Fu, Siyi , Zhang, Yixin

OE Vol. 55 Issue 05

KEYWORDS: Spatial resolution, Ferroelectric materials, Signal detection, Fiber Bragg gratings, Sensors, Optical engineering, Reflectivity, Signal attenuation, Phase shifts, Sun

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PROCEEDINGS ARTICLE | March 8, 2016

Automatic airway wall segmentation and thickness measurement for long-range optical coherence tomography images

Proc. SPIE. 9697, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XX

KEYWORDS: Endoscopy, Edge detection, Tissues, Imaging systems, Optical coherence tomography, Image segmentation, Image processing

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SPIE Journal Paper | November 2, 2015

Quality inspection guided laser processing of irregular shape objects by stereo vision measurement: application in badminton shuttle manufacturing

Qi, Li , Wang, Shun , Zhang, Yixin , Sun, Yingying , Zhang, Xuping

OE Vol. 54 Issue 11

KEYWORDS: Cameras, Laser processing, Laser cutting, Inspection, 3D modeling, Calibration, Stereo vision systems, Wavelets, 3D image processing, Image segmentation

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PROCEEDINGS ARTICLE | October 8, 2015

Investigation of the MQAM modulation schemes in downlink of space optical communication system

Proc. SPIE. 9679, AOPC 2015: Optical Fiber Sensors and Applications

KEYWORDS: Quadrature amplitude modulation, Modulation, Sensors, Receivers, Telecommunications, Optical communications, Astronomical imaging, Atmospheric turbulence, Laser communications, Amplitude shift keying

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SPIE Conference Volume | August 13, 2015

2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications

PROCEEDINGS ARTICLE | August 10, 2015

Investigation on the bit error rate performance of 40Gb/s space optical communication system based on BPSK scheme

Proc. SPIE. 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications

KEYWORDS: Optical design, Avalanche photodetectors, Lithium, Modulation, Sensors, Telecommunications, Optical communications, Astronomical imaging, Atmospheric turbulence, Data communications

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PROCEEDINGS ARTICLE | August 10, 2015

Development of a distributed polarization-OTDR to measure two vibrations with the same frequency

Proc. SPIE. 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications

KEYWORDS: Optical fibers, Rutherfordium, Polarization, Birefringence, Backscatter, Scattering, Sensors, Reflectometry, Signal processing, Rubidium

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PROCEEDINGS ARTICLE | August 10, 2015

The performance limit of Φ-OTDR sensing system enhanced with ultra-weak fiber Bragg grating array

Proc. SPIE. 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications

KEYWORDS: Signal to noise ratio, Fiber Bragg gratings, Sensors, Reflectivity, Reflectometry, Rayleigh scattering, Sensing systems, Spatial resolution, Signal detection, Phase shifts

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PROCEEDINGS ARTICLE | December 3, 2014

Location of lightning stroke on OPGW by use of distributed optical fiber sensor

Proc. SPIE. 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors

KEYWORDS: Optical fibers, Electrodes, Fiber optics sensors, Reflectometry, Telecommunications, Temperature sensors, Optical communications, Spatial resolution, Fiber optic communications, Temperature metrology

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SPIE Conference Volume | November 24, 2014

Optoelectronic Devices and Integration V

PROCEEDINGS ARTICLE | November 17, 2014

Health monitoring of electric power communication line using a distributed optical fiber sensor

Proc. SPIE. 9274, Advanced Sensor Systems and Applications VI

KEYWORDS: Optical fibers, Electrodes, Diagnostics, Fiber optics sensors, Telecommunications, Optical communications, Spatial resolution, Fiber optic communications, Defense technologies, Temperature metrology

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PROCEEDINGS ARTICLE | October 24, 2014

Performance enhancement for long distance BOTDR sensing system based on high extinction ratio probe pulse generator