The difficulties encountered in the implementation of a temperature or strain sensor based on Fiber Bragg Grating in a harsh radiative environment are introduced. We present the choices made to select both a radiation-resistant fiber in terms of transmission and also the grating inscription conditions necessary to write radiation tolerant FBGs in such fibers with a femto-second laser. The response of different classes of gratings was also studied under radiation at high doses (>1MGy). The comparison between F- and Ge-doped fibers was highlighted.
Morana, A., Girard, S., Marin, E., Marcandella, C., Périsse, J., Macé, J.R., et al. (2014). Radiation hardening of FBG in harsh environments. In Proceedings of the 23rd International Conference on Optical Fibre Sensors (pp.91578I-1-91578I-4) [10.1117/12.2059600].
Radiation hardening of FBG in harsh environments
MORANA, Adriana;CANNAS, Marco;
2014-01-01
Abstract
The difficulties encountered in the implementation of a temperature or strain sensor based on Fiber Bragg Grating in a harsh radiative environment are introduced. We present the choices made to select both a radiation-resistant fiber in terms of transmission and also the grating inscription conditions necessary to write radiation tolerant FBGs in such fibers with a femto-second laser. The response of different classes of gratings was also studied under radiation at high doses (>1MGy). The comparison between F- and Ge-doped fibers was highlighted.
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