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Multiplexed fiber optic acoustic sensors in a 120 km loop using RF modulation

Littler, Ian; Chow, Jong; Shaddock, Daniel; McClelland, David; Gray, Malcolm

Description

The interrogation, via optical, fiber, of fiber Fabre Perot interferometers using laser based radio frequency modulation techniques, can provide ultra-sensitive acoustic sensing over very long distances. The benefits over other fiber optical acoustic sensing schemes include; immunity to laser polarization, coherence and intensity noise as well as reduced susceptibility to Rayleigh back scattering. Well defined error signals can be extracted at up to 120 km away. We report on the first...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
URI: http://hdl.handle.net/1885/28742
Source: Proceedings of SPIE - Progress in Biomedical Optics and Imaging
DOI: 10.1117/12.733330

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