100-km long distance FBG vibration sensor based on matching filter demodulation

Junhao Hu; Zhihao Chen; Ju Teng Teo; Changyuan Yu

doi:10.1117/12.884978

18 May 2011 100-km long distance FBG vibration sensor based on matching filter demodulation

Junhao Hu, Zhihao Chen, Ju Teng Teo, Changyuan Yu

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77538N (2011) https://doi.org/10.1117/12.884978
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A 100-km long distance fiber Bragg Grating (FBG) vibration sensor system is demonstrated by using a Raman pump laser source at 1395 nm and two segments of erbium doped fiber (EDF). The reflected spectrum of FBG has 30dB signal noise ratio. By using a wavelength matched FBG to achieve wavelength demodulation, vibration frequencies from 1Hz to 1000Hz has been effectively detected in this 100km long distance vibration sensor system.

Citation Download Citation

Junhao Hu, Zhihao Chen, Ju Teng Teo, and Changyuan Yu "100-km long distance FBG vibration sensor based on matching filter demodulation", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538N (18 May 2011); https://doi.org/10.1117/12.884978

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