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

fYear

1997

fDate

15-19 Sep 1997

Firstpage

439

Lastpage

444

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/RADECS.1997.698961

Filename

698961