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100km distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter

100km distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter
100km distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter
We report the longest sensing range of a distributed temperature change measurement along an optical sensing fibre with single-ended access. The technique is based on spontaneous Brillouin scattering and microwave heterodyne detection. The Brillouin frequency shift was used to obtain the distributed temperature change at a range of 100 km with a temperature error of less than 8 °C, and a spatial resolution of 50 m.
distributed temperature, strain, laser source, lightwave detector, optical fibre sensors, Brillouin scattering, Brillouin frequency shifts, monitoring temperature on power lines, oil pipelines, live optical fibre data links, power plants, nuclear reactors, distributed temperature and strain sensors
0957-0233
1544-1547
Al Ahbabi, Mohammed Nasser
263cce3f-d0d9-4bce-b0f6-7628853073ea
Cho, Y.T.
eea77b90-e7f3-4496-9637-721dfe8fb5a4
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
Al Ahbabi, Mohammed Nasser
263cce3f-d0d9-4bce-b0f6-7628853073ea
Cho, Y.T.
eea77b90-e7f3-4496-9637-721dfe8fb5a4
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7

Al Ahbabi, Mohammed Nasser, Cho, Y.T. and Newson, T.P. (2004) 100km distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter. Measurement Science and Technology, 15 (8), 1544-1547. (doi:10.1088/0957-0233/15/8/020).

Record type: Article

Abstract

We report the longest sensing range of a distributed temperature change measurement along an optical sensing fibre with single-ended access. The technique is based on spontaneous Brillouin scattering and microwave heterodyne detection. The Brillouin frequency shift was used to obtain the distributed temperature change at a range of 100 km with a temperature error of less than 8 °C, and a spatial resolution of 50 m.

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Published date: 2004
Keywords: distributed temperature, strain, laser source, lightwave detector, optical fibre sensors, Brillouin scattering, Brillouin frequency shifts, monitoring temperature on power lines, oil pipelines, live optical fibre data links, power plants, nuclear reactors, distributed temperature and strain sensors

Identifiers

Local EPrints ID: 13916
URI: http://eprints.soton.ac.uk/id/eprint/13916
ISSN: 0957-0233
PURE UUID: e1c51178-15c8-4200-9fd3-1570b51131d1

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Date deposited: 13 Jan 2005
Last modified: 11 Feb 2021 17:38

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