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Proceedings Paper

A distributed-feedback fiber-laser-based optical fiber hydrophone system with very high sensitivity
Author(s): Ian Leung; Zourab Brodzeli; Trevor Whitbread; Xiao-Bao Chen; Gang-Ding Peng
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Paper Abstract

This paper reports the development of a very compact and very-high sensitivity optical fibre hydrophone system using a distributed-feedback fibre laser with a cavity length of 10cm. A theoretical system design making use of a Mach-Zehnder interferometer, homodyne demodulation scheme and digital signal processing is described. At the time of writing, the system is only partially completed; therefore the content of this paper will focus on the distributed-feedback fibre laser sensor head. Results for noise spectrum below 100kHz are presented, as well as discussions on some key issues with designing such hydrophone systems. Although not the intention for the system, initial results also indicate the suitability of the DFBFL for intensity modulated sensing.

Paper Details

Date Published: 14 February 2005
PDF: 10 pages
Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.580706
Show Author Affiliations
Ian Leung, Univ. of New South Wales (Australia)
Zourab Brodzeli, Univ. of New South Wales (Australia)
Trevor Whitbread, Univ. of New South Wales (Australia)
Xiao-Bao Chen, Electronics 23rd Research Institute (China)
Gang-Ding Peng, Univ. of New South Wales (Australia)

Published in SPIE Proceedings Vol. 5634:
Advanced Sensor Systems and Applications II
Yun-Jiang Rao; Osuk Y. Kwon; Gang-Ding Peng, Editor(s)

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