A buried intrusion monitoring system based on high sensitivity optical fiber geophone

Shujuan Li; Faxiang Zhang; Xiaolei Zhang; Zhihui Sun; Li Min; Chang Wang

doi:10.1117/12.2285005

25 October 2017 A buried intrusion monitoring system based on high sensitivity optical fiber geophone

Shujuan Li, Faxiang Zhang, Xiaolei Zhang, Zhihui Sun, Li Min, Chang Wang

Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 1046410 (2017) https://doi.org/10.1117/12.2285005
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

A new intrusion monitoring system is designed, based on a high sensitivity fiber grating geophone and PGC interferometric demodulation. A kind of high sensitive fiber Bragg grating geophone is designed. The sensitivity of the geophone is analyzed by finite element software. The PGC interferometric demodulation algorithm is used to detect the wavelength of the geophone, to reduce the noise of the system and improve the signal-to-noise ratio. Invasive monitoring test was carried out, the personnel and vehicles invading signal were collected and analyzed. Test results show that the intrusion monitoring system based on fiber geophone can effectively identify remote intrusion, and has low false alarm rate.

Citation Download Citation

Shujuan Li, Faxiang Zhang, Xiaolei Zhang, Zhihui Sun, Li Min, and Chang Wang "A buried intrusion monitoring system based on high sensitivity optical fiber geophone", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 1046410 (25 October 2017); https://doi.org/10.1117/12.2285005

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