19 October 2016 Distributed acoustic sensing system using an identical weak fiber Bragg grating array
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Proceedings Volume 10155, Optical Measurement Technology and Instrumentation; 101550O (2016) https://doi.org/10.1117/12.2244770
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
We propose and experimentally demonstrate a distributed acoustic sensing system using an identical weak fiber Bragg grating array. Phase, frequency and location information of vibration can be demodulated by using a path-match interferometry method. 3×3 coupler demodulation technique is employed to eliminate signal fading in interferometer. Experiments on detecting acoustic wave generated by PZT show that the system is capable of measuring vibrations of up to 1000 Hz over 1.6 km with 2.5m spatial resolution.
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Sheng Liu, Sheng Liu, Xinying Han, Xinying Han, Hongqiao Wen, Hongqiao Wen, } "Distributed acoustic sensing system using an identical weak fiber Bragg grating array", Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101550O (19 October 2016); doi: 10.1117/12.2244770; https://doi.org/10.1117/12.2244770
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