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Proceedings Paper

Long-term irradiation of fiber Bragg gratings in low-dose-rate gamma-neutron radiation field
Author(s): Alberto Fernandez Fernandez; Andrei I. Gusarov; Francis Berghmans; Marc C. Decreton; Patrice Megret; Michel Blondel; Alain Delchambre
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Paper Abstract

The implementation of Wavelength Division Multiplexing (WDM) techniques in fiber optic data-communication links for nuclear installations requires to assess the radiation tolerance of passive WDM multiplexers. Nowadays, Fibre Bragg gratings (FBG) have become a key component in all-fibre WDM multiplexers. Up to now, only accelerated short term irradiation experiments of FBG filters have been discussed, suggesting possible ways to optimise their radiation tolerance. In this paper, we evaluate the long-term behaviour of FBGs filters, written in different types of optical fibres, after two years of continuous low-dose rate gamma-neutron irradiation. We compare these results with our previous accelerated tests. We evidence that FBG filters can withstand years in a nuclear environment, while keeping their filtering properties at an acceptable level.

Paper Details

Date Published: 11 November 2002
PDF: 8 pages
Proc. SPIE 4823, Photonics for Space Environments VIII, (11 November 2002); doi: 10.1117/12.452203
Show Author Affiliations
Alberto Fernandez Fernandez, SCK-CEN-Belgian Nuclear Research Ctr. (Belgium)
Univ. Libre de Bruxelles (Belgium)
Andrei I. Gusarov, Faculté Polytechnique de Mons (Belgium)
Francis Berghmans, SCK-CEN-Belgian Nuclear Research Ctr. (Belgium)
Vrije Univ. Brussel (Belgium)
Marc C. Decreton, SCK-CEN-Belgian Nuclear Research Ctr. (Belgium)
Patrice Megret, Faculté Polytechnique de Mons (Belgium)
Michel Blondel, Faculté Polytechnique de Mons (United States)
Alain Delchambre, Univ. Libre de Bruxelles (Belgium)

Published in SPIE Proceedings Vol. 4823:
Photonics for Space Environments VIII
Edward W. Taylor, Editor(s)

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