Diaphragm-based fiber optic Fabry-Perot hydrophone with hydrostatic pressure compensation

Zhaogang Wang; Wentao Zhang; Fang Li

doi:10.1117/12.2029456

15 October 2013 Diaphragm-based fiber optic Fabry-Perot hydrophone with hydrostatic pressure compensation

Zhaogang Wang, Wentao Zhang, Fang Li

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89241B (2013) https://doi.org/10.1117/12.2029456
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

A fiber optic Fabry-Perot (FP) hydrophone with hydrostatic pressure compensation was demonstrated. A polyimide (PI) diaphragm attached on the end of an Acrylonitrile Butadiene Styrene (ABS) tube was used as the sensing element. A pair of grooves was designed in an inner ABS tube to connect the Fabry-Perot cavity with the outside environment, which made the hydrophone hydrostatic pressure compensated. The operation principle, design and testing of polyimide diaphragm-based sensor were described. Experiment results show that it has not only high stability in different hydrostatic pressures, but also flat frequency response of about 158 ±3 dB within 300-3000 Hz.

Citation Download Citation

Zhaogang Wang, Wentao Zhang, and Fang Li "Diaphragm-based fiber optic Fabry-Perot hydrophone with hydrostatic pressure compensation", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89241B (15 October 2013); https://doi.org/10.1117/12.2029456

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