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Proceedings Paper

Study of the hydrogen influence on the acoustic velocity of single-mode fibers by Rayleigh and Brillouin backscattering measurements
Author(s): S. Leparmentier; J. L. Auguste; G. Humbert; G. Pilorget; L. Lablonde; Sylvie Delepine-Lesoille
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Paper Abstract

We study the effect of hydrogen gas diffusion in silica optical fibers on Brillouin and Rayleigh scatterings. By modeling hydrogen diffusion kinetics as a function of temperature and pressure and by measuring simultaneously Rayleigh and Brillouin scattering on G652 single-mode fiber samples during H2 desorption (previously exposed to 175 bars H2 at 80°C), we have demonstrated experimentally that acoustic velocity increases linearly with H2 concentration with a ratio of about (4.8 m/s) / (%mol H2).

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963432 (28 September 2015); doi: 10.1117/12.2194102
Show Author Affiliations
S. Leparmentier, Andra (France)
XLIM Institut de Recherche, CNRS, Limoges Univ. (France)
J. L. Auguste, XLIM Institut de Recherche, CNRS, Limoges Univ. (France)
G. Humbert, XLIM Institut de Recherche, CNRS, Limoges Univ. (France)
G. Pilorget, Andra (France)
L. Lablonde, iXFiber (France)
Sylvie Delepine-Lesoille, Andra (France)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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