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Influence of fiber composition and grating fabrication on the radiation sensitivity of fiber Bragg gratings

: Henschel, H.; Höffgen, S.K.; Krebber, K.; Kuhnhenn, J.; Weinand, U.


9th European Conference on Radiation and its Effects on Components and Systems, RADECS 2007. Proceedings : Deauville, France, September 10-14, 2007
New York, NY: IEEE, 2007
ISBN: 978-1-4244-1704-9
European Conference on Radiation and its Effects on Components and Systems (RADECS) <9, 2007, Deauville>
Conference Paper
Fraunhofer INT ()
fiber Bragg grating; gamma radiation; optical fiber sensor; radiation effect

The radiation-induced Bragg wavelength shift (BWS) was measured with type I gratings made of 12 fibers with very different composition, i.e., of fibers with an extremely different radiation-induced attenuation. With two of the fibers fabrication parameters like laser intensity, hydrogen loading, and annealing conditions after grating inscription were varied. With another fiber type I and type II gratings were made by a completely different process. With gratings made under identical conditions of the 12 fibers the radiation-induced BWS only varied by about a factor of three. Varying the fabrication parameters led to BWS differences up to nearly a factor often.