7 November 2012 Distributed optical fiber vibration waveform sensing system based on compensating interferometer
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84219P (2012) https://doi.org/10.1117/12.974442
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
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.
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Jun Wang, Jun Wang, Shuidong Xiong, Shuidong Xiong, Xun Liang, Xun Liang, Qiong Yao, Qiong Yao, Jing Zhu, Jing Zhu, Yongming Hu, Yongming Hu, } "Distributed optical fiber vibration waveform sensing system based on compensating interferometer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219P (7 November 2012); doi: 10.1117/12.974442; https://doi.org/10.1117/12.974442
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