Author/Authors :
Tortech، نويسنده , , B. and Van Uffelen، نويسنده , , M. and Gusarov، نويسنده , , A. and Ouerdane، نويسنده , , Y. and Boukenter، نويسنده , , A. and Meunier، نويسنده , , J.-P. and Berghmans، نويسنده , , F. and Thienpont، نويسنده , , H.، نويسنده ,
Abstract :
Several single mode silica-based fibers 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 ∼2 kGy. 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 luminescence and absorption spectrum profiles, while a significant (∼dB/m/kGy at 1530 nm) increase in transmission losses is attributed to the silica host matrix modifications. This conclusion is drawn based on the post-irradiation photo-luminescence analyzes realized with a confocal micro-spectrometer (514.5 nm excitation, P ∼ 2 mW).
Keywords :
optical fibers , Radiation effects , optical spectroscopy , Luminescence
