Radiation Vulnerability of Fiber Bragg Gratings in Harsh Environments
- Authors: Morana, A.; Girard, S.; Marin, E.; Marcandella, C.; Rizzolo, S.; Périsse, J.; Macé, J.; Taouri, A.; Boukenter, A.; Cannas, M.; Ouerdane, Y.
- Publication year: 2015
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/233087
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.