Underwater Wireless Acousto-Optic Waveguide (UWAOW)

Giuliano, G. , Kent, L. W.J. and Laycock, L. C. (2017) Underwater Wireless Acousto-Optic Waveguide (UWAOW). In: Advanced Free-Space Optical Communication Techniques and Applications III, Warsaw, Poland, 11-14 Sep 2017, p. 1043708. ISBN 9781510613386 (doi:10.1117/12.2286318)

Giuliano, G. , Kent, L. W.J. and Laycock, L. C. (2017) Underwater Wireless Acousto-Optic Waveguide (UWAOW). In: Advanced Free-Space Optical Communication Techniques and Applications III, Warsaw, Poland, 11-14 Sep 2017, p. 1043708. ISBN 9781510613386 (doi:10.1117/12.2286318)

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Abstract

The present study originated in the lack of research into achieving underwater total internal reflection (TIR) via the acousto-optic effect. The uniqueness of this technique exists in the fact that it is based on a high sound pressure level which induces a localised change in refractive index of seawater sufficient to achieve total internal reflection within the communication channel. Different transducer systems for generating the pressure wave have been investigated and take the form of a wave which may be either a standing wave, or a novel beamforming technique. The former is based on an array of transducers and with an acoustic mirror at the receiver in order to establish the standing wave. The alternative approach relies on the high intrinsic directionality of a novel beamformer where an annular transducer array is examined as an acoustic source. In this paper, the main characteristics of the acoustic optic waveguide will be presented. This will include both sound and light propagation in the ocean, TIR, novel beam propagation, the refractive index of water as a function of the externally applied acoustic pressure, and the acoustic technology. The modelled results, the limitations imposed by the challenging medium, and the system requirements required to obtain an Underwater Wireless Acousto-Optic Waveguide (UWAOW) will be also addressed.

Item Type:Conference Proceedings
Additional Information:The authors wish to thank the Engineering and Physical Sciences Research Council (EPSRC reference 1566934) and BAE Systems Plc. for sponsorship of this work.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Giuliano, Mr Giovanni
Authors: Giuliano, G., Kent, L. W.J., and Laycock, L. C.
College/School:College of Science and Engineering > School of Engineering
ISSN:0277-786X
ISBN:9781510613386
Published Online:06 October 2017
Copyright Holders:Copyright © 2017 SPIE
First Published:First published in Proceedings of SPIE 10437: 1043708
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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