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. In, Conference on Lasers and Electro-Optics (CLEO '97), Baltimore, US, 18 - 23 May 1997. Institute of Electrical and Electronics Engineers.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 76786
Accepted Date and Publication Date:
Status
1997Made publicly available
Date Deposited: 11 Mar 2010
Last Modified: 03 Nov 2016 00:58
URI: http://eprints.soton.ac.uk/id/eprint/76786

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