Spatial distributions of NBOHCs in an electron and gamma-ray irradiated germanosilicate optical fiber

Abstract : The spatial distributions of emitting point defects are characterized by Confocal-Micro luminescence (CML) spectroscopy in the transverse cross-sections of a 4-steps Ge-doped multimode optical fiber irradiated with either -rays or electrons. The measured cartographies of the Non-Bridging Oxygen Hole Centers (NBOHCs), under an excitation at 633 nm, notably differ between the fiber samples irradiated with electrons (~100 MGy) and those exposed to γ-rays (9 MGy). Additional cathodoluminescence (CL) have been performed. The observed in-situ kinetic measurements of the NBOHC evolution as a function of the electron beam irradiation time agree with the CML result analysis. The influence of three main factors on the generation and bleaching of emitting defects are characterized: the irradiation type, the accumulated dose and the type of defect.
Document type :
Poster communications
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https://hal-ujm.archives-ouvertes.fr/ujm-01964726
Contributor : Sylvain Girard <>
Submitted on : Sunday, December 23, 2018 - 1:15:05 PM
Last modification on : Thursday, September 5, 2019 - 10:40:15 AM

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  • HAL Id : ujm-01964726, version 1

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Imène Reghioua, Aziz Boukenter, Antonino Alessi, Mattia Fanetti, Diego Di Francesca, et al.. Spatial distributions of NBOHCs in an electron and gamma-ray irradiated germanosilicate optical fiber. 12th Conference SiO2 and Advanced Dielectrics (SiO2 2018), Jun 2018, Bari, Italy. ⟨ujm-01964726⟩

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