Multi-point location algorithm for distributed optical fiber disturbances detection system

He Wang; Qizhen Sun; Xiaolei Li; Jianghai Wo; Deming Liu

doi:10.1117/12.2031503

15 October 2013 Multi-point location algorithm for distributed optical fiber disturbances detection system

He Wang, Qizhen Sun, Xiaolei Li, Jianghai Wo, Deming Liu

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 892417 (2013) https://doi.org/10.1117/12.2031503
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

A novel data processing algorithm named “2-FFT” for multi-point disturbances detection and location in an in-line Sagnac sensing system is proposed and demonstrated. When multiple disturbances are applied onto the sensing fiber at the same time, the frequency response curve of the modulated phase will be superposed by each null frequency curve of the single disturbance. However, by applying a second-time FFT to the frequency spectrum, the location corresponding to each disturbance point could be simply extracted and determined. Based on the theoretical and the experimental investigation, the “2-FFT” algorithm is demonstrated to be reasonable and efficient.

Citation Download Citation

He Wang, Qizhen Sun, Xiaolei Li, Jianghai Wo, and Deming Liu "Multi-point location algorithm for distributed optical fiber disturbances detection system", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892417 (15 October 2013); https://doi.org/10.1117/12.2031503

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