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Photonic Sensors

, Volume 2, Issue 3, pp 237–246 | Cite as

Liquid Crystal-Based Hydrophone Arrays

  • Zourab BrodzeliEmail author
  • Leonardo Silvestri
  • Andrew Michie
  • Vladimir G. Chigrinov
  • Qi Guo
  • Eugene P. Pozhidaev
  • Alexei D. Kiselev
  • Francois Ladouceur
Open Access
Regular

Abstract

We describe a fiber 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 the voltage-controlled liquid crystals and simple multiplexing method. The proposed method permits measurement of sound under water at multiple points along an optical fiber using the low cost components and standard single mode fiber, without complex interferometric measurement techniques, electronics or demodulation software.

Keywords

Ferroelectric liquid crystal electrooptic response hydrophone sonar deformed helix ferroelectric liquid crystal fiber Bragg grating 

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Copyright information

© The Author(s) 2012

This article is published under license to BioMed Central Ltd. Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • Zourab Brodzeli
    • 1
    Email author
  • Leonardo Silvestri
    • 1
  • Andrew Michie
    • 2
  • Vladimir G. Chigrinov
    • 3
  • Qi Guo
    • 3
  • Eugene P. Pozhidaev
    • 4
  • Alexei D. Kiselev
    • 5
  • Francois Ladouceur
    • 1
  1. 1.School of Electrical Engineering and TelecommunicationsUNSWSydneyAustralia
  2. 2.Smart Digital Optics Pty. Ltd.EveleighAustralia
  3. 3.CDR, Department of Electrical and Electronic EngineeringThe Hong Kong University of Science and TechnologyKowloon, Hong KongChina
  4. 4.P. N. Lebedev Physics Institute of Russian SciencesMoscowRussia
  5. 5.Institute of Physics of National Academy of Sciences of UkraineKyïvUkraine

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