Process for the synthesis of fluorinated glass by sol-gel and optical fiber carried out in the fluorinated glass obtained by this process.

摘要

The present invention relates to a process for synthesizing fluoride glass by sol-gel route. The object of the invention is to synthetize a fluorinated glass free of impurities. BR/ This object is achieved by means of a process comprising the steps of: BR/ - preparing a wet oxygenated gel from precursors containing all the constitutive cations of said fluorinated glass, BR/ - hydrolyzing this gel, BR/ - drying this gel, BR/ this process being characterized in that it further comprises the step of: BR/ - treating this oxygenated gel with a fluorinating agent in phase gaseous, at a temperature below the crystallization temperature of the glass. BR/ This process makes it possible more particularly to manufacture fluorinated glass for optical fibers. / P