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Proceedings Paper

Multi-zone temperature sensor using a multi-wavelength Brillouin fiber ring laser
Author(s): Carlos A. Galindez; Francisco J. Madruga; Angel Ullan; Manuel Lopez-Amo; Jose M. Lopez-Higuera
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Paper Abstract

A simple system for sensing temperature in multiple zones based on a multi-wavelength Brillouin fiber laser ring is presented. Optical fiber reels are serially concatenated and divided in zones (one per sensing area). Setting the Brillouin lasing in each spool of fiber generates a characteristic wavelength that depends on the fiber properties and the temperature in the zone. Thus, it is possible to measure temperature independently and accurately through heterodyne detection between two narrow laser signals. The proposed sensor integrates the temperature along the whole spool of fiber in each zone. These real time measurements were successfully checked in our laboratory.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75030J (5 October 2009); doi: 10.1117/12.835138
Show Author Affiliations
Carlos A. Galindez, Univ. de Cantabria (Spain)
Francisco J. Madruga, Univ. de Cantabria (Spain)
Angel Ullan, Univ. de Cantabria (Spain)
Manuel Lopez-Amo, Univ. Publica de Navarra (Spain)
Jose M. Lopez-Higuera, Univ. de Cantabria (Spain)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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