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Proceedings Paper

Static pressure and temperature compensated wideband fiber laser hydrophone
Author(s): F.-X. Launay; R. Lardat; R. Bouffaron; G. Roux; M. Doisy; C. Bergogne
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Paper 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.

Paper Details

Date Published: 20 May 2013
PDF: 5 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87940K (20 May 2013); doi: 10.1117/12.2025488
Show Author Affiliations
F.-X. Launay, Thales Underwater Systems (France)
R. Lardat, Thales Underwater Systems (France)
R. Bouffaron, Thales Underwater Systems (France)
G. Roux, Thales Underwater Systems (France)
M. Doisy, Thales Underwater Systems (France)
C. Bergogne, Thales Underwater Systems (France)

Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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