The impact of fictive temperature () on the evolution of point defects and optical attenuation in non-doped and -doped sol-gel silica glasses was studied and compared to Suprasil F300 and Infrasil 301 glasses before and after -irradiation. To this aim, sol-gel optical fiber preforms have been fabricated by the densification of erbium salt-soaked nanoporous silica xerogels through the polymeric sol-gel technique. These -irradiated fiber preforms have been characterized by FTIR, UV-vis-NIR absorption spectroscopy, electron paramagnetic resonance, and photoluminescence measurements. We showed that a decrease in the glass fictive temperature leads to a decrease in the glass disorder and strained bonds. This mainly results in a lower defect generation rate and thus less radiation-induced attenuation in the UV–vis range. Furthermore, it was found that -radiation “hardness” is higher in -doped sol-gel silica compared to un-doped sol-gel silica and standard synthetic silica glasses. The present work demonstrates an effective strategy to improve the radiation resistance of optical fiber preforms and glasses through glass fictive temperature reduction.
© 2016 Optical Society of AmericaFull Article | PDF Article
14 September 2016: A correction was made to the author listing.
OSA Recommended Articles
Hicham El Hamzaoui, Youcef Ouerdane, Laurent Bigot, Géraud Bouwmans, Bruno Capoen, Aziz Boukenter, Sylvain Girard, and Mohamed Bouazaoui
Opt. Express 20(28) 29751-29760 (2012)
Francesca Cova, Federico Moretti, Mauro Fasoli, Norberto Chiodini, Kristof Pauwels, Etiennette Auffray, Marco Toliman Lucchini, Stefania Baccaro, Alessia Cemmi, Hana Bártová, and Anna Vedda
Opt. Lett. 43(4) 903-906 (2018)
Fenghou Xie, Chongyun Shao, Meng Wang, Qinling Zhou, Fengguang Lou, Wenbin Xu, Chunlei Yu, Suya Feng, and Lili Hu
Opt. Express 26(22) 28506-28516 (2018)