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Proceedings Paper

In situ radiation influence on strain measurement performance of Brillouin sensors
Author(s): X. Pheron; Y. Ouerdane; S. Girard; C. Marcandella; S. Delepine-Lesoille; J. Bertrand; F. Taillade; E. Merliot; Y. Sikali Mamdem; A. Boukenter
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Paper Abstract

A new approach is proposed to monitor in situ the influence of gamma radiations on Brillouin properties of optical fiber extensometers. Experimental results are illustrated with the characterization of two fibers samples up to total dose of about 600Gy. The Brillouin frequency shift remains unaffected at such radiations level, as well as the spectral Brillouin signature or its dependence with strain. Meanwhile, propagation losses increase under radiations with an amplitude related to fiber dopants. The target application is nuclear wastes repository monitoring where higher doses are expected. UV radiation preliminary tests show that compaction phenomenon may occur at such high doses, inducing Brillouin frequency shift up to 20 MHz.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530I (17 May 2011); doi: 10.1117/12.885992
Show Author Affiliations
X. Pheron, ANDRA (France)
Lab. Hubert Curien, CNRS (France)
Y. Ouerdane, Lab. Hubert Curien, CNRS (France)
S. Girard, CEA DAM (France)
C. Marcandella, CEA DAM (France)
S. Delepine-Lesoille, ANDRA (France)
J. Bertrand, ANDRA (France)
F. Taillade, Lab. Central des Ponts et Chaussées (France)
E. Merliot, Lab. Central des Ponts et Chaussées (France)
Y. Sikali Mamdem, EDF Recherche & Developpement (France)
A. Boukenter, Lab. Hubert Curien, CNRS (France)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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