Bragg wavelength evolution and thermal sensitivity behaviour of Fibre Bragg Gratings under gamma irradiation

Research output: Contribution to journalArticle


  • Damien Kinet
  • Christian Broadway
  • Andrei Goussarov
  • Patrice Mégret
  • Christophe Caucheteur

Institutes & Expert groups

  • UMons - University of Mons-Hainaut


Fibre Bragg gratings (FBGs) can be used as a strain, temperature, external refractive index, … sensor in various domains of application and more particularly in harsh environments such as nuclear plants, radioactive waste storages, and also in a space environment inside artificial satellites. In this study, we report the wavelength and temperature sensitivity radiation response of FBGs written in different optical fibres and thanks to different lasers and methods of inscription. We show that the Bragg wavelength radiation-induced shift depends, in the reported cases, only of the core doping and not of the type of laser, but in all cases, the temperature sensitivity is modified with gamma irradiation.


Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalProceedings of SPIE
StatePublished - 28 Aug 2019
Event2019 - EWOFS19 - Seventh European Workshop on Optical Fibre Sensors - Limassol, Cyprus


  • Fibre Bragg grating, optical fibres, laser, gamma irradiation, temperature sensitivity, Bragg wavelength shift

ID: 5643986