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Proceedings Paper

Distributed hydrophone array based on liquid crystal cell
Author(s): Zourab Brodzeli; Francois Ladouceur; Leonardo Silvestri; Andrew Michie; Vladimir Chigrinov; Grace Qi Guo; Eugene P. Pozhidaev; Alexei D. Kiselev
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Paper Abstract

We describe a fibre optic hydrophone array system that could be used for underwater acoustic surveillance applications e.g. military, counter terrorist and customs authorities in protecting ports and harbors, offshore production facilities or coastal approaches as well as various marine applications. In this paper we propose a new approach to underwater sonar systems using voltage-controlled Liquid Crystals (LC) and simple multiplexing method. The proposed method permits measurements of sound under water at multiple points along an optical fibre using low cost components (LC cells), standard single mode fibre, without complex interferometric measurement techniques, electronics or demodulation software.

Paper Details

Date Published: 31 January 2012
PDF: 8 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83512C (31 January 2012); doi: 10.1117/12.915962
Show Author Affiliations
Zourab Brodzeli, Univ. of New South Wales (Australia)
Francois Ladouceur, Univ. of New South Wales (Australia)
Leonardo Silvestri, Univ. of New South Wales (Australia)
Andrew Michie, Smart Digital Optics Pty. Ltd. (Australia)
Vladimir Chigrinov, The Hong Kong Univ. of Science and Technology (Hong Kong, China)
Grace Qi Guo, The Hong Kong Univ. of Science and Technology (Hong Kong, China)
Eugene P. Pozhidaev, P.N. Lebedev Physical Institute (Russian Federation)
Alexei D. Kiselev, Institute of Physics (Ukraine)

Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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