Distributed Hydrogen Sensing With Brillouin Scattering in Optical Fibers

We report on the design and test of a truly distributed hydrogen sensor based on Brillouin scattering into single-mode G652 optical fibers. The proposed system enables remote, robust, long-term, and truly distributed hydrogen sensing into long-range structures, such as radioactive waste repositories...

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Bibliographic Details
Published in:IEEE photonics technology letters 2012-09, Vol.24 (17), p.1475-1477
Main Authors: Delepine-Lesoille, Sylvie, Bertrand, J., Lablonde, L., Pheron, X.
Format: Article
Language:English
Subjects:
Brillouin scattering
Hydrogen
hydrogen monitoring
hydrogen sensing
optical fiber sensor
Optical fiber sensors
Optical fibers
Optical saturation
Optical scattering
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Summary:We report on the design and test of a truly distributed hydrogen sensor based on Brillouin scattering into single-mode G652 optical fibers. The proposed system enables remote, robust, long-term, and truly distributed hydrogen sensing into long-range structures, such as radioactive waste repositories, with a spatial resolution in the order of 2 m over several hundred meters. For the first time, we demonstrate that Brillouin frequency shift depends on hydrogen concentration in the silica core with a rate of approximately 0.21 MHz/%H 2 . Influence parameters are discussed. We showed that temperature influence may be corrected with a collocated carbon-coated fiber.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2206578