Method of preparing a halide optical fibre

Details Method of preparing a halide optical fibre Method of preparing a halide optical fibre

1988-04-05

1989-07-18

Kellogg, Arthur

Glass manufacturing

Processes

Forming product or preform from molten glass

65 313, 65 32, 65134, 65135, 501 40, 501 35, 501 37, 501 38, C03B 516

Patent

active

048489972

ABSTRACT:
A process for treating a halide, e.g. fluoride, glass composition, characterized by contacting a melt of the composition (3) with dry oxygen (6). 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 wavelengths in optical fibre, e.g. the loss at 2.6 .mu.m attributabel to Fe(II).

REFERENCES:
patent: 4659352 (1987-04-01), Robinson
patent: 4741752 (1988-05-01), France et al.

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