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Proceedings Paper

High-sensitivity fiber optic acoustic sensors
Author(s): Ping Lu; Deming Liu; Hao Liao
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Paper 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.

Paper Details

Date Published: 4 November 2016
PDF: 8 pages
Proc. SPIE 10025, Advanced Sensor Systems and Applications VII, 100250Z (4 November 2016); doi: 10.1117/12.2247890
Show Author Affiliations
Ping Lu, Huazhong Univ. of Science and Technology (China)
Deming Liu, Huazhong Univ. of Science and Technology (China)
Hao Liao, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10025:
Advanced Sensor Systems and Applications VII
Tiegen Liu; Shibin Jiang; Rene Landgraf, Editor(s)

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