Treating glass compositions

Details Treating glass compositions Treating glass compositions

C - Chemistry, Metallurgy

03

C

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C03C 6/06 (2006.01) C03B 5/08 (2006.01) C03B 5/16 (2006.01) C03B 5/225 (2006.01) C03C 3/32 (2006.01) C03C 4/10 (2006.01) C03C 13/04 (2006.01)

Patent

CA 1267537

ABSTRACT TREATING GLASS COMPOSITIONS A process is disclosed for treating a halide, e.g. fluoride, glass composition, characterised by contacting a melt of the composition with dry oxygen. Oxygen, simply on contact with a fluoride glass melt, converts transition metals, e.g. from Fe(II) to Fe(III), from one stable state to another and thereby reduces loss at transmission wave- lengths in optical fibre, e.g. the loss of 2.6 µm attributable to Fe(II).

487356

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