Paramagnetic germanium-related centers induced by energetic radiation in optical fibers and preforms

Abstract : We investigated the creation processes of Ge-related paramagnetic point defects in silica fibers and preforms, doped with different amounts of germanium, and X-ray irradiated at several radiation doses. Different paramagnetic defect species, like GeE0, Ge(1) and Ge(2), were revealed by electron paramagnetic resonance measurements and their concentration was studied as a function of the irradiation dose. The comparison with the optical absorption spectra points out the main role of Ge(1) on the optical transmission loss of fibers in the UV region.
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https://hal-ujm.archives-ouvertes.fr/ujm-00394025
Contributor : Youcef Ouerdane <>
Submitted on : Wednesday, June 10, 2009 - 12:30:27 PM
Last modification on : Wednesday, July 25, 2018 - 2:05:31 PM

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G. Origlio, Sébastien Girard, Marco Cannas, Y. Ouerdane, R. Boscaino, et al.. Paramagnetic germanium-related centers induced by energetic radiation in optical fibers and preforms. Journal of Non-Crystalline Solids, Elsevier, 2009, 355, pp.1054-1056. ⟨10.1016/j.jnoncrysol.2008.11.033⟩. ⟨ujm-00394025⟩

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