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

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.) At 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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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: http://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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Contributors

Author: Gareth P. Lees
Author: Peter C. Wait
Author: Arthur H. Hartog
Editor: John P. Dakin
Editor: Alan D. Kersey
Editor: Dilip K. Paul

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