Gamma Radiation Tests of Radiation-Hardened Fiber Bragg Grating-Based Sensors for Radiation Environments

Jochen Kuhnhenn (1) , U. Weinand , Adriana Morana (2) , Sylvain Girard (2) , Emmanuel Marin (2) , Jocelyn Perisse (3) , Jean-Sébastien Genot (3) , Jérôme Grelin (4) , Lukas Hutter (4) , Gilles Mélin (5) , Laurent Lablonde (5) , Thierry Robin (5) , Benoît Cadier (5) , Jean-Reynald Macé (6) , Aziz Boukenter (2) , Youcef Ouerdane (2)

1 Fraunhofer INT - Fraunhofer Institute for Technological Trend Analysis
2 LHC - Laboratoire Hubert Curien
3 AREVA NP
4 Smart Fibres Ltd [Bracknell]
5 iXBLUE (Entreprise)
6 AREVA

In the framework of the HOBAN collaborative project funded by KIC InnoEnergy, radiation-hardened fiber Bragg gratings (FBGs) are developed to withstand high levels of radiation dose at high temperatures for their implementation in temperature and strain sensors for nuclear facilities, accelerators or space. This paper presents Gamma radiation test results obtained at room and elevated temperature in hardened FBGs as well as in the optical fibers used for their production. It is shown that radiation-induced Bragg wavelength shift is below ±2 pm corresponding to ±0.2 °C and does not influence the sensor performance even after a total dose of 200 kGy(SiO2) and operating temperature up to 350 °C.

Domaines: Optique / photonique

Jochen Kuhnhenn, U. Weinand, Adriana Morana, Sylvain Girard, Emmanuel Marin, et al.. Gamma Radiation Tests of Radiation-Hardened Fiber Bragg Grating-Based Sensors for Radiation Environments. IEEE Transactions on Nuclear Science, 2017, 64 (8), pp.2307 - 2311. ⟨10.1109/TNS.2017.2673023⟩. ⟨hal-01621115⟩