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Radiation Vulnerability of Fiber Bragg Gratings in Harsh Environments

Abstract : The difficulties encountered in the implementation of a temperature or strain sensor based on fiber Bragg grating (FBG) 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 femtosecond laser. The radiation response of these gratings was also studied under radiation at dose up to 1 MGy. The comparison between Ge-free and Ge-doped fibers was highlighted.
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Adriana Morana, Sylvain Girard, Emmanuel Marin, Claude Marcandella, Serena Rizzolo, et al.. Radiation Vulnerability of Fiber Bragg Gratings in Harsh Environments. Journal of Lightwave Technology, Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA), 2015, 33 (12), pp.2646-2651. ⟨10.1109/JLT.2014.2364526⟩. ⟨hal-02093965⟩

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