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, Proceedings of Conference on Lasers and Electro-Optics. Conference on Lasers and Electro-Optics (CLEO '97) Piscataway, United States, Institute of Electrical and Electronics Engineers.
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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:||Book Section|
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Mar 2010|
|Last Modified:||01 Oct 2012 14:59|
|Publisher:||Institute of Electrical and Electronics Engineers|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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