20 May 2013 Static pressure and temperature compensated wideband fiber laser hydrophone
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Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87940K (2013) https://doi.org/10.1117/12.2025488
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland
Abstract
Sensitive optical hydrophone is a key component for the design of compact fully optical acoustic arrays and one major issue about this kind of sensors is their sensitivity to hydrostatic pressure and temperature. We present in this paper a compact hydrophone which is optimized for reduced temperature sensitivity and high static pressure capability. High acoustic sensitivity is obtained through wideband mechanical amplification design. Two mock-ups have been realized and the measurements show good agreements with finite-element model. We present acoustic measurements as well as measurements in environmental conditions (temperature and pressure) obtained with a low noise opto-electronic interrogation system.
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F.-X. Launay, R. Lardat, R. Bouffaron, G. Roux, M. Doisy, C. Bergogne, "Static pressure and temperature compensated wideband fiber laser hydrophone", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87940K (20 May 2013); doi: 10.1117/12.2025488; https://doi.org/10.1117/12.2025488
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