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Article Dans Une Revue Journal of Applied Physics Année : 2015

Gamma and x-ray irradiation effects on different Ge and Ge/F doped optical fibers

Antonino Alessi
Sylvain Girard
Diego Di Francesca
Aziz Boukenter
Youcef Ouerdane

Résumé

We performed electron paramagnetic resonance (EPR) measurements on γ and X ray irradiated Ge doped and Ge/F co-doped optical fibers. We considered three different drawing conditions (speed and tension), and for each type of drawing, we studied Ge and Ge/F doped samples having Ge doping level above 4% by weight. The EPR data recorded for the γ ray irradiated fibers confirm that all the samples exhibit a very close radiation response regardless of the drawing conditions corresponding to values used for the production of specialty fibers. Furthermore, as for the X irradiated materials, in the γ ray irradiated F co-doped fibers, we observed that the Ge(1) and the Ge(2) defects generation is unchanged, whereas it was enhanced for the E'Ge. In the various fibers, the comparison of the γ and X-ray induced concentrations of these kinds of Ge related defects indicates that the two irradiations induce similar effects regardless of the different employed dose rates and sources. Confocal microscopy luminescence results show that the starting content of the Germanium Lone Pair Center (GLPC) is neither strongly affected by the Ge content nor by the drawing conditions, and we consider the similarity of the GLPC content as key factor in determining many of the above reported similarities.
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Dates et versions

hal-01188313 , version 1 (28-08-2015)

Identifiants

Citer

Antonino Alessi, Sylvain Girard, Imène Reghioua, M. Fanetti, Diego Di Francesca, et al.. Gamma and x-ray irradiation effects on different Ge and Ge/F doped optical fibers. Journal of Applied Physics, 2015, 118, pp.085901. ⟨10.1063/1.4929458⟩. ⟨hal-01188313⟩
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