Fiber optic sensor for detection of ground vibrations

Tsair-Chun Liang; Yung-Li Lin

doi:10.1117/12.914034

30 January 2012 Fiber optic sensor for detection of ground vibrations

Tsair-Chun Liang, Yung-Li Lin

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 835109 (2012) https://doi.org/10.1117/12.914034
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

The paper describes a new fiber optic sensor based on the Mach-Zehnder and Sagnac hybrid interferometer to measure the ground vibrations is investigated. The frequency characteristic of vibration signal is analyzed via fast Fourier transform (FFT) and Gabor transform. It provides highly sensitive for low frequency measurement. The fiber optic vibration sensing system presented in this research is appropriate to utilize for sensing ground vibration between 10 ~ 200Hz frequency range.

Citation Download Citation

Tsair-Chun Liang and Yung-Li Lin "Fiber optic sensor for detection of ground vibrations", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835109 (30 January 2012); https://doi.org/10.1117/12.914034

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