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Recent advances in distributed optical fibre temperature sensing using the Landau-Placzek ratio

Recent advances in distributed optical fibre temperature sensing using the Landau-Placzek ratio
Recent advances in distributed optical fibre temperature sensing using the Landau-Placzek ratio
Distributed optical fibre temperature sensing (DTS) provides an elegant way of monitoring the temperature at many points without necessitating the accurate positioning of individual discrete sensors. This paper demonstrates recent advances in distributed temperature sensing based on spontaneous Brillouin scattering. A high spatial and temperature resolution is achieved by exploiting a novel low cost detection system. The experimental configuration consists of two key components; a Q-switched laser source to generate the backscattered signal and the low cost detection system which comprises an in-fibre double pass Mach-Zehnder interferometer and a sensitive InGaAs APD connected to a computer based averaging system. It is the relative low cost of these components which has made the Brillouin based temperature sensor so attractive for commercial exploitation. A spatial resolution of 3.0 metres with a Brillouin temperature resolution of 0.9°C at a range of 16km has been achieved.
292-296
Lees, Gareth P.
13384bff-3a8a-4525-b213-77eb17cb1c79
Wait, Peter C.
8f797344-b725-4ea0-8fa9-6440d3946a38
Hartog, Arthur H.
9358a5af-0af0-4d70-ac71-10a02ba85043
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
Dakin, John P.
04891b9b-5fb5-4245-879e-9e7361adf904
Kersey, Alan D.
b841ea1c-039a-4aec-a3cc-710deb775aa7
Paul, Dilip K.
8fefa754-e50c-41e0-ab70-bb145e28d357
Lees, Gareth P.
13384bff-3a8a-4525-b213-77eb17cb1c79
Wait, Peter C.
8f797344-b725-4ea0-8fa9-6440d3946a38
Hartog, Arthur H.
9358a5af-0af0-4d70-ac71-10a02ba85043
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
Dakin, John P.
04891b9b-5fb5-4245-879e-9e7361adf904
Kersey, Alan D.
b841ea1c-039a-4aec-a3cc-710deb775aa7
Paul, Dilip K.
8fefa754-e50c-41e0-ab70-bb145e28d357

Lees, Gareth P., Wait, Peter C., Hartog, Arthur H. and Newson, Trevor P. (1998) Recent advances in distributed optical fibre temperature sensing using the Landau-Placzek ratio. Dakin, John P., Kersey, Alan D. and Paul, Dilip K. (eds.) Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII. 01 - 05 Nov 1998. pp. 292-296 . (doi:10.1117/12.339104).

Record type: Conference or Workshop Item (Paper)

Abstract

Distributed optical fibre temperature sensing (DTS) provides an elegant way of monitoring the temperature at many points without necessitating the accurate positioning of individual discrete sensors. This paper demonstrates recent advances in distributed temperature sensing based on spontaneous Brillouin scattering. A high spatial and temperature resolution is achieved by exploiting a novel low cost detection system. The experimental configuration consists of two key components; a Q-switched laser source to generate the backscattered signal and the low cost detection system which comprises an in-fibre double pass Mach-Zehnder interferometer and a sensitive InGaAs APD connected to a computer based averaging system. It is the relative low cost of these components which has made the Brillouin based temperature sensor so attractive for commercial exploitation. A spatial resolution of 3.0 metres with a Brillouin temperature resolution of 0.9°C at a range of 16km has been achieved.

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More information

Published date: 1998
Venue - Dates: Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII, 1998-11-01 - 1998-11-05

Identifiers

Local EPrints ID: 76615
URI: https://eprints.soton.ac.uk/id/eprint/76615
PURE UUID: f307f857-b01b-488d-b47f-8e911f198bc5

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:38

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