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31 January 2012 Distributed hydrophone array based on liquid crystal cell
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Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83512C (2012)
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia
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.
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Zourab Brodzeli, Francois Ladouceur, Leonardo Silvestri, Andrew Michie, Vladimir Chigrinov, Grace Qi Guo, Eugene P. Pozhidaev, and Alexei D. Kiselev "Distributed hydrophone array based on liquid crystal cell", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83512C (31 January 2012);

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