New Fluoride Glasses for the Preparation of Infrared Optical Fibers
Abstract
A new family of fluoride glasses based on the association of indium fluoride(InF3) and barium fluoride (BaF2) as major elements has been discovered and investigated. This report described the systematic investigations made to optimize the compositions with the aim of keeping the exceptional transparency and avoiding the devitrification process which is very common with this kind of glasses. Many four component systems have been explored by Differential Scanning Calorimetry in order to find a composition with the largest difference between crystallization temperature Tx and glass temperature Tg. In these systems, the maximum Tx-Tg is around 100 C for example for the composition 30 BaF2-30 InF3-20 ZnF2-20 ThF4 which appears to be one of the best for a four-component glass. From the melt of such composition which has a suitable viscosity around 680 C, it has been possible to obtain large samples with a maximum thickness of 10 mm, without apparent crystallization.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1986
- Accession Number
- ADA196583
Entities
People
- J. Lucas
Organizations
- University of Rennes 1