Title :
Radiation Vulnerability of Fiber Bragg Gratings in Harsh Environments
Author :
Morana, Adriana ; Girard, Sylvain ; Marin, Emmanuel ; Marcandella, Claude ; Rizzolo, Serena ; Perisse, Jocelyn ; Mace, Jean-Reynald ; Taouri, Abdelillah ; Boukenter, Aziz ; Cannas, Marco ; Ouerdane, Youcef
Author_Institution :
Lab. H. Curien, Univ. Jean Monnet, St. Etienne, France
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.
Keywords :
Bragg gratings; fibre optic sensors; germanium; high-speed optical techniques; strain sensors; temperature sensors; femtosecond laser; fiber Bragg grating; grating inscription conditions; harsh radiative environment; radiation tolerant FBG; radiation vulnerability; radiation-resistant fiber; strain sensor; temperature sensor; transmission; Fiber gratings; Fiber lasers; Gratings; Optical fiber sensors; Optical fibers; Radiation effects; Fiber; Fiber Bragg Grating; RIA; fiber Bragg grating; radiation; radiation-induced attenuation (RIA); silica;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2364526
