Development of a 32-element fibre optic hydrophone system

MENG, ZHAOJUN and Hu, Y. and Ni, M. and Xiong, S. and Zhang, R. and Li, X. and Stewart, G. and Dong, F. and Culshaw, B.; Marcus, M.A. and Culshaw, B. and Dakin, J.P., eds. (2004) Development of a 32-element fibre optic hydrophone system. In: Fiber optic sensor technology and applications III. Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) . SPIE, USA, pp. 114-119. ISBN 0819455423 (https://doi.org/10.1117/12.577842)

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Abstract

The structure and performance of an all polarization maintaining optical fibre hydrophone element is described and a sensitivity of -158+/-1.5dB is achieved. A 32-element, spatially multiplexed system is constructed with a noise-equivalent sound pressure of similar to3.58 X 10(-4) Pa/rootHz at 1kHz and the major results of sea trials indicate that the system is useful for research and industrial applications.