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Novel optical fibre distributed temperature sensor based on the Landau-Placzek ratio

Lees, G.P., de Souza, K. and Newson, T.P. (1997) Novel optical fibre distributed temperature sensor based on the Landau-Placzek ratio At Conference on Lasers and Electro-Optics (CLEO '97), United States. 18 - 23 May 1997.

Record type: Conference or Workshop Item (Paper)

Abstract

We report a compact, portable optical fiber distributed temperature sensor based on spontaneous Brillouin backscattered light. The ratio of the Rayleigh and Brillouin backscattered light is known as the Landau-Placzek ratio and gives a measure of temperature. To measure the Landau-Placzek ratio the Rayleigh and Brillouin signals that are separated by a frequency of approximately 10 GHz have to be spectrally resolved. A narrow linewidth Q-switched fiber laser and an inexpensive low loss in-fiber Mach-Zehnder interferometer were developed for this purpose.

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More information

e-pub ahead of print date: 1997
Venue - Dates: Conference on Lasers and Electro-Optics (CLEO '97), United States, 1997-05-18 - 1997-05-23

Identifiers

Local EPrints ID: 76786
URI: http://eprints.soton.ac.uk/id/eprint/76786
PURE UUID: 8c63fe0d-a407-479b-9abb-a22e4b329b9b

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:37

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Contributors

Author: G.P. Lees
Author: K. de Souza
Author: T.P. Newson

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