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Gamma irradiation test of Ge-doped single-mode optical fiber at cryogenic conditions

: Kuhnhenn, Jochen; Schumann, Olaf Jochen; Weinand, Udo; Wolf, Raphael

Fulltext urn:nbn:de:0011-n-4941658 (316 KByte PDF)
MD5 Fingerprint: eb7123687086f2b6646f8ab4e3705fa3
Created on: 18.5.2018

Institute of Electrical and Electronics Engineers -IEEE-:
16th European Conference on Radiation and Its Effects on Components and Systems, RADECS 2016 : September 19-23, 2016, Bremen, Germany
Piscataway, NJ: IEEE, 2016
ISBN: 978-1-5090-4366-8
ISBN: 978-1-5090-4367-5
European Conference on Radiation and its Effects on Components and Systems (RADECS) <16, 2016, Bremen>
Conference Paper, Electronic Publication
Fraunhofer INT ()
cryogenic; gamma-ray effect; fiber gratings; optical fiber testing

Optical fibers are used routinely in harsh environments for signal transmission or sensing applications. Whereas the individual challenges originating from very high or very low temperatures, vacuum or ionizing radiation were extensively studied, the effects of combinations of these conditions were not investigated widely. In this paper we report on a detailed analysis of gamma irradiation tests done on Germanium-doped single-mode fibers at very low temperatures of 16 K. The drastic change in radiation response is shown with varying temperatures through measurements with discrete light sources and a spectral measurement system. To monitor the temperature in the fibers, Fiber-Bragg-Gratings (FBG) were used and their response under radiation observed. The findings will be valuable for determination of the temperature dependence of the point-defect formation as well as for specialized applications at low temperatures, such as accelerators or deep space missions.