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Pico-strain multiplexed fiber optic sensor array operating down to infra-sonic frequencies

Littler, I C M; Gray, Malcolm B; Chow, Jong; Shaddock, Daniel; McClelland, David

Description

An integrated sensor system is presented which displays passive long range operation to 100 km at pico-strain (pε) sensitivity to low frequencies (4 Hz) in wavelength division multiplexed operation with negligible cross-talk (better than −75 dB). This has been achieved by prestabilizing and multiplexing all interrogation lasers for the sensor array to a single optical frequency reference. This single frequency reference allows each laser to be locked to an arbitrary wavelength and...[Show more]

CollectionsANU Research Publications
Date published: 2009-06-18
Type: Journal article
URI: http://hdl.handle.net/10440/1044
http://digitalcollections.anu.edu.au/handle/10440/1044
Source: Optics Express
DOI: 10.1364/OE.17.011077

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