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Process for the synthesis of fluoride glass by the sol-gel process and optical fiber of fluoride glass obtained by this process
Process for the synthesis of fluoride glass by the sol-gel process and optical fiber of fluoride glass obtained by this process
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机译:通过溶胶-凝胶法合成氟化物玻璃的方法以及通过该方法获得的氟化物玻璃的光纤
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摘要
The objective of the invention is to synthesise an impurity-free fluoride glass. This objective is attained with the aid of a process comprising the stages consisting in: - preparing a wet oxygenated gel from precursors containing all the constituent cations of the said fluoride glass, - hydrolysing this gel, - drying this gel, this process being characterised in that it additionally comprises the stage consisting in: - treating this oxygenated gel with a fluorinating agent in gaseous phase, at a temperature lower than the crystallisation temperature of the glass. This process makes it possible more particularly to manufacture fluoride glass for optical fibres. IMAGE
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