Title :
Radiation-induced loss of rare earth doped silica fibres
Author :
Henschel, H. ; Köhn, O. ; Schmidt, H.U. ; Kirchhof, J. ; Unger, S.
Author_Institution :
Fraunhofer-INT, Euskirchen, Germany
Abstract :
Eighteen single mode fibres doped with different Rare Earth elements are exposed to 60Co gamma radiation in order to estimate the radiation sensitivity of fibre amplifiers or fibre lasers and to find fibres with extremely high loss increase that are suited for dosimetry of low radiation levels. Induced loss measurements with varying dose rate confirmed the applicability of a simple dose rate transformation method also to Rare Earth doped fibres. Operation of a “distributed” fibre optic radiation sensor is demonstrated at a dose rate of less than 0.1 Gy/d
Keywords :
fibre optic sensors; gamma-ray effects; optical fibre losses; SiO2; distributed fibre optic radiation sensor; dose rate transformation; dosimetry; fibre amplifier; fibre laser; gamma radiation; radiation induced loss; radiation sensitivity; rare earth doped silica fibre; Doped fiber amplifiers; Dosimetry; Fiber lasers; Gamma rays; Laser modes; Optical fiber amplifiers; Optical fiber losses; Optical fiber sensors; Silicon compounds; Ultraviolet sources;
Conference_Titel :
Radiation and Its Effects on Components and Systems, 1997. RADECS 97. Fourth European Conference on
Conference_Location :
Cannes
Print_ISBN :
0-7803-4071-X
DOI :
10.1109/RADECS.1997.698961
