High-sensitivity fiber optic acoustic sensors

Ping Lu; Deming Liu; Hao Liao

doi:10.1117/12.2247890

4 November 2016 High-sensitivity fiber optic acoustic sensors

Ping Lu, Deming Liu, Hao Liao

Proceedings Volume 10025, Advanced Sensor Systems and Applications VII; 100250Z (2016) https://doi.org/10.1117/12.2247890
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

Due to the overwhelming advantages compared with traditional electronicsensors, fiber-optic acoustic sensors have arisen enormous interest in multiple disciplines. In this paper we present the recent research achievements of our group on fiber-optic acoustic sensors. The main point of our research is high sensitivity interferometric acoustic sensors, including Michelson, Sagnac, and Fabry-Pérot interferometers. In addition, some advanced technologies have been proposed for acoustic or acoustic pressure sensing such as single-mode/multimode fiber coupler, dual FBGs and multi-longitudinal mode fiber laser based acoustic sensors. Moreover, our attention we have also been paid on signal demodulation schemes. The intensity-based quadrature point (Q-point) demodulation, two-wavelength quadrature demodulation and symmetric 3×3 coupler methodare discussed and compared in this paper.

Citation Download Citation

Ping Lu, Deming Liu, and Hao Liao "High-sensitivity fiber optic acoustic sensors", Proc. SPIE 10025, Advanced Sensor Systems and Applications VII, 100250Z (4 November 2016); https://doi.org/10.1117/12.2247890

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