Novel optical fibre distributed temperature sensor based on the Landau-Placzek ratio
Novel optical fibre distributed temperature sensor based on the Landau-Placzek ratio
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.
Lees, G.P.
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de Souza, K.
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Newson, T.P.
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Lees, G.P.
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de Souza, K.
03fbf873-6edf-490a-b884-7c7c5dcb058e
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
Lees, G.P., de Souza, K. and Newson, T.P.
(1997)
Novel optical fibre distributed temperature sensor based on the Landau-Placzek ratio.
Conference on Lasers and Electro-Optics (CLEO '97), , Baltimore, United States.
18 - 23 May 1997.
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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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e-pub ahead of print date: 1997
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Conference on Lasers and Electro-Optics (CLEO '97), , Baltimore, United States, 1997-05-18 - 1997-05-23
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Local EPrints ID: 76786
URI: http://eprints.soton.ac.uk/id/eprint/76786
PURE UUID: 8c63fe0d-a407-479b-9abb-a22e4b329b9b
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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:36
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Author:
G.P. Lees
Author:
K. de Souza
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