28 September 2015 Steady state γ-ray radiation effects on Brillouin fiber sensors
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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 Cigéo1,2. 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, C. Cangialosi, S. Girard, S. Girard, A. Boukenter, A. Boukenter, E. Marin, E. Marin, M. Cannas, M. Cannas, S. Delepine-Lesoille, S. Delepine-Lesoille, C. Marcandella, C. Marcandella, P. Paillet, P. Paillet, Y. Ouerdane, 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); doi: 10.1117/12.2194990; https://doi.org/10.1117/12.2194990
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