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Proceedings Paper

Real-time phase demodulation and data administration of distributed optical fiber vibration sensing system
Author(s): Mengzhe Qin; Xiangge He; Fei Liu; Xiaoping Zheng; Min Zhang
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Paper Abstract

Distributed optical fiber sensing system (DOFS) has great potential in areas of petroleum exploration and ocean defense. By algorithm optimization in different coding environment, the multi-point and real-time heterodyne demodulation of DOFS is achieved. In experiments, the length of the optical fiber is 500m, the spatial resolution is 5m and the system sampling rate is 200kHz, under which condition the data rate reaches up to 160MB/s and the system can stilled be demodulated timely. Based on this, by plotting the three-dimensional diagram (vibration intensity versus time and space), the whole DOFS can be detected continuously and accurately.

Paper Details

Date Published: 27 April 2017
PDF: 8 pages
Proc. SPIE 10208, Fiber Optic Sensors and Applications XIV, 1020810 (27 April 2017); doi: 10.1117/12.2262061
Show Author Affiliations
Mengzhe Qin, Tsinghua Univ. (China)
Xiangge He, Tsinghua Univ. (China)
Fei Liu, Tsinghua Univ. (China)
Xiaoping Zheng, Tsinghua Univ. (China)
Min Zhang, Peking Univ. (China)

Published in SPIE Proceedings Vol. 10208:
Fiber Optic Sensors and Applications XIV
Christopher S. Baldwin; Gary Pickrell; Henry H. Du, Editor(s)

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