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Enhanced performance of long range Brillouin intensity based temperature sensors using remote Raman amplification

Enhanced performance of long range Brillouin intensity based temperature sensors using remote Raman amplification
Enhanced performance of long range Brillouin intensity based temperature sensors using remote Raman amplification
We report on the use of remote Raman amplification to improve the accuracy of spontaneous Brillouin measurements for long range distributed sensor applications. The enhancement of the signal to noise was demonstrated in a long range distributed temperature sensor exploiting the temperature dependence of the spontaneous Brillouin backscattered signal. A temperature resolution of 8 °C and a spatial resolution of 20 m were obtained at a sensing range of 100 km. The Brillouin signal was averaged 220 times.
optical fibre sensors, Brillouin scattering, Raman scattering, distributed temperature sensors
0957-0233
1548-1552
Cho, Y.T.
eea77b90-e7f3-4496-9637-721dfe8fb5a4
Alahbabi, M.
af0e27e4-b558-49d1-8657-8daa279eb590
Gunning, M.J.
f794096b-506a-46e1-91ae-3eb905b5b56b
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
Cho, Y.T.
eea77b90-e7f3-4496-9637-721dfe8fb5a4
Alahbabi, M.
af0e27e4-b558-49d1-8657-8daa279eb590
Gunning, M.J.
f794096b-506a-46e1-91ae-3eb905b5b56b
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7

Cho, Y.T., Alahbabi, M., Gunning, M.J. and Newson, T.P. (2004) Enhanced performance of long range Brillouin intensity based temperature sensors using remote Raman amplification. Measurement Science and Technology, 15 (8), 1548-1552. (doi:10.1088/0957-0233/15/8/021).

Record type: Article

Abstract

We report on the use of remote Raman amplification to improve the accuracy of spontaneous Brillouin measurements for long range distributed sensor applications. The enhancement of the signal to noise was demonstrated in a long range distributed temperature sensor exploiting the temperature dependence of the spontaneous Brillouin backscattered signal. A temperature resolution of 8 °C and a spatial resolution of 20 m were obtained at a sensing range of 100 km. The Brillouin signal was averaged 220 times.

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More information

Published date: 2004
Keywords: optical fibre sensors, Brillouin scattering, Raman scattering, distributed temperature sensors
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 21010
URI: https://eprints.soton.ac.uk/id/eprint/21010
ISSN: 0957-0233
PURE UUID: 4c3a278c-031a-4aea-a9c2-7dbc598db222

Catalogue record

Date deposited: 07 Mar 2006
Last modified: 26 Jul 2018 16:30

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