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Proceedings Paper

A real-time multichannel distributed acoustic sensing system with phase-sensitive optical domain reflectometry technology
Author(s): Shengwen Feng; Fang Li; Tuanwei Xu; Lilong Ma; Fei Li
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Paper Abstract

A real-time distributed acoustic sensing system with ten thousand channels is proposed to detect dynamic signal along the fiber. The phase-sensitive optical domain reflectometry and phase-generated carrier algorithm are used to acquire the phase information of Rayleigh backscattering along the whole fiber. The sensing length of this system could be 10km with the sample resolution of 0.4m, which means that up to 25000 channels signal processing is realized in real time with Field-Programmable Gate Array module and host computer. The working principle of coherent Rayleigh backscattering interference, phase-generated carrier algorithm and the signal processing flow are introduced, and the experimental results are given in this paper.

Paper Details

Date Published: 25 October 2018
PDF: 6 pages
Proc. SPIE 10822, Real-time Photonic Measurements, Data Management, and Processing III, 108220A (25 October 2018); doi: 10.1117/12.2503833
Show Author Affiliations
Shengwen Feng, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Fang Li, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Tuanwei Xu, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Lilong Ma, Institute of Semiconductors (China)
Univ. of Chinese Academy of Sciences (China)
Fei Li, China National Petroleum Corp. (China)


Published in SPIE Proceedings Vol. 10822:
Real-time Photonic Measurements, Data Management, and Processing III
Ming Li; Bahram Jalali; Keisuke Goda; Kevin K. Tsia, Editor(s)

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