Gamma radiation induced loss in erbium doped optical fibres

Blandine Tortech (1) , Marco van Uffelen (2) , Andrei Gusarov (2) , Y. Ouerdane (1) , A. Boukenter (1) , J.-P. Meunier (1) , Francis Berghmans (2, 3) , Hugo Thienpont (3)

1 LHC - Laboratoire Hubert Curien
2 SCK-CEN - Centre d'Etude de l'Energie Nucléaire
3 VUB - Vrije Universiteit Brussel

Several single-mode silica-based fibres with different levels of Erbium concentrations have been tested under 60Co gamma radiation. Irradiation has been performed at a dose-rate of ~30 Gy/h to a total dose of ~2kGy. Transmission spectra were measured in situ in a spectral range from 1250 to 1630 nm. The measurements show no detectable change in the Er-ions absorption, while a significant (~dB/m/kGy at 1530 nm) increase in transmission losses is attributed to silica host matrix modifications. This conclusion is drawn based on the post-irradiation photo-luminescence analyses.

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Blandine Tortech, Marco van Uffelen, Andrei Gusarov, Y. Ouerdane, A. Boukenter, et al.. Gamma radiation induced loss in erbium doped optical fibres. 6th Symposium SiO2 Advanced Diectrics and Related Devices, Jun 2006, Palermo, Italy. pp.174--175. ⟨ujm-00170865⟩