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

G. Origlio 1, 2 Sébastien Girard 3 Marco Cannas 2 Y. Ouerdane 1 R. Boscaino 2 A. Boukenter 1
1 LHC - Laboratoire Hubert Curien [Saint Etienne]
2 DIPARTIMENTO DI SCIENZE FISICHE ED ASTRONOMICHE, UNIVERSITà DI PALERMO - Dipartimento di Scienze Fisiche ed Astronomiche, Università di Palermo
3 DCRE CEA - Département de Conception et Réalisation des Experimentations, CEA-DIF
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.
Keywords : Optical fibers Optical spectroscopy Defects Absorption Silica Electron spin resonance
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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, June 3, 2020 - 12:30:03 AM

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UNIV-ST-ETIENNE | CEA | CNRS | LAHC | IOGS | PARISTECH | UDL

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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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