Real-time phase demodulation and data administration of distributed optical fiber vibration sensing system

Mengzhe Qin; Xiangge He; Fei Liu; Xiaoping Zheng; Min Zhang

doi:10.1117/12.2262061

27 April 2017 Real-time phase demodulation and data administration of distributed optical fiber vibration sensing system

Mengzhe Qin, Xiangge He, Fei Liu, Xiaoping Zheng, Min Zhang

Author Affiliations +

Proceedings Volume 10208, Fiber Optic Sensors and Applications XIV; 1020810 (2017) https://doi.org/10.1117/12.2262061
Event: SPIE Commercial + Scientific Sensing and Imaging, 2017, Anaheim, CA, United States

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.

Citation Download Citation

Mengzhe Qin, Xiangge He, Fei Liu, Xiaoping Zheng, and Min Zhang "Real-time phase demodulation and data administration of distributed optical fiber vibration sensing system", Proc. SPIE 10208, Fiber Optic Sensors and Applications XIV, 1020810 (27 April 2017); https://doi.org/10.1117/12.2262061

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