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Experimental examination of the variation of the spontaneous Brillouin power and frequency coefficients under the combined influence of temperature and strain

Belal, M. and Newson, T.P. (2012) Experimental examination of the variation of the spontaneous Brillouin power and frequency coefficients under the combined influence of temperature and strain Journal of Lightwave Technology, 30, (8), pp. 1250-1255. (doi:10.1109/JLT.2011.2169393).

Record type: Article

Abstract

Interpretation of Brillouin scattering based distributed strain and temperature measurements so far have been based on the premise that the Brillouin coefficients used to describe the influence of strain or temperature remain constant under circumstances where a sensing fibre is subjected to the combined influence of both temperature and strain. We examine the validity of these assumptions by experimentally evaluating the Brillouin coefficients under combined temperature and strain influence. In order to illustrate the importance of correcting the Brillouin coefficients for estimation of true values of applied strain and change in temperature, arbitrarily chosen values of change in frequency and percentage change in intensity are used to calculate the values of applied strain and change in temperature by using both corrected and uncorrected Brillouin coefficients

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Published date: 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 337786
URI: http://eprints.soton.ac.uk/id/eprint/337786
ISSN: 0733-8724
PURE UUID: ada07ad1-0771-4540-b1b4-98e827037a63

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Date deposited: 03 May 2012 08:20
Last modified: 18 Jul 2017 06:01

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Contributors

Author: M. Belal
Author: T.P. Newson

University divisions

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