Investigation of the structural environment and chemical bonding of fluorine in Yb-doped fluorosilicate glass optical fibres. (January 2019)

• Record Type: Journal Article
• Authors: Cavillon, Maxime; Faugas, Benoit; Zhao, Junjie; Kucera, Courtney; Kukuoz, Baris; Dragic, Peter; Qiao, Xvsheng; Du, Jincheng; Ballato, John
• Is Part Of: Journal of chemical thermodynamics. Volume 128(2019)
• Page Start: 119
• Page End: 126
• Publication Date: 2019-01
• Subjects: Optical fibre -- Ytterbium -- Fluorine bonding -- Fluorosilicate glass; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2018.08.016
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: Fluoride phases are formed upon heat-treatment of fluorosilicate optical fibers. Sr, Yb (and La in MD simulations) aggregate inside the glass fluorinated regions. Glass fluorinated regions strongly impact rare earth spectroscopic properties. Abstract: Fluorosilicate glass optical fibres are interesting hosts for rare-earth ions. When doped with ytterbium, for example, such fibres exhibit unique and beneficial fluoride-like spectroscopic features despite the host being predominantly silica. This work investigates the thermo-physical and chemical properties of Yb-doped fluorosilicate optical fibres in order to gain insight into the local structure about the rare earth and better understand the origins of their spectroscopic properties. Experimental findings, which suggest that the rare earth is embedded in a fluorine-rich environment in the fluorosilicate glass, are corroborated using molecular dynamic simulations.