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Proceedings Paper

Distributed optical fiber vibration waveform sensing system based on compensating interferometer
Author(s): Jun Wang; Shuidong Xiong; Xun Liang; Qiong Yao; Jing Zhu; Yongming Hu
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Paper Abstract

A distributed optical fiber vibration sensing system based on compensating interferometer is established and a distributed optical fiber vibration waveform detecting technology based on a MZ compensating interferometer and compensating interference of Rayleigh backscattering lights in adjacent areas is put forward. In laboratory experiment, the sensing fiber is a 2500m SM fiber. By exerting 500Hz PZT vibration signals on the fiber at 40m, 430m, and 2500m, the locations of the signals are obtained by phase demodulation. But there is a crosstalk at 40m because of multiple scatterings. The spatial resolution is 40m and the SNR is 18dB.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219P (7 November 2012); doi: 10.1117/12.974442
Show Author Affiliations
Jun Wang, National Univ. of Defense Technology (China)
Shuidong Xiong, National Univ. of Defense Technology (China)
Xun Liang, National Univ. of Defense Technology (China)
Qiong Yao, National Univ. of Defense Technology (China)
Jing Zhu, National Univ. of Defense Technology (China)
Yongming Hu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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