Steady state gamma ray radiation effects on Brillouin fiber sensors

C. Cangialosi; S. Girard; A. Boukenter; E. Marin; M. Cannas; S. Delepine-Lesoille; C. Marcandella; P. Paillet; Y. Ouerdane

doi:10.1117/12.2194990

28 September 2015 Steady state γ-ray radiation effects on Brillouin fiber sensors

C. Cangialosi, S. Girard, A. Boukenter, E. Marin, M. Cannas, S. Delepine-Lesoille, C. Marcandella, P. Paillet, Y. Ouerdane

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96344V (2015) https://doi.org/10.1117/12.2194990
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

Brillouin optical time-domain analysis (BOTDA) sensors offer remarkable advantages for the surveillance of the planned French deep geological radioactive wastes repository, called Cigéo^1,2. In this work we study the performances of Brillouin distributed sensors in harsh environment. We evaluate the radiation tolerance of different sensor classes and their responses evolution during γ-ray exposition with 1kGy/h dose rate (to reach ~0.2MGy) and after 1, 3, 6 and 10 MGy accumulated doses. Measurements on strained Ge-doped SMF are reported to highlight the variation on Brillouin scattering proprieties, both intrinsic frequency position of Brillouin shift and its dependence on temperature and strain.

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C. Cangialosi, S. Girard, A. Boukenter, E. Marin, M. Cannas, S. Delepine-Lesoille, C. Marcandella, P. Paillet, and Y. Ouerdane "Steady state γ-ray radiation effects on Brillouin fiber sensors", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96344V (28 September 2015); https://doi.org/10.1117/12.2194990

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