Purifying process of fluoride glass

Details Purifying process of fluoride glass Purifying process of fluoride glass

1985-08-19

1986-07-01

Kellogg, Arthur

Glass manufacturing

Processes

Forming product or preform from molten glass

65134, 65DIG16, 501 30, 501 40, C03C 312

Patent

active

045977860

ABSTRACT:
A fluoride glass for infrared optical transmission fiber is purified for dehydration and deoxidation to reduce transmission loss by reacting melted fluoride glass with NF.sub.3 gas at temperature between 500.degree. C. and 800.degree. C. No scattering loss is increased by the present purification as decomposed product in the reaction does not precipitate.

REFERENCES:
patent: 4264347 (1981-04-01), Shintani et al.
patent: 4539033 (1985-09-01), Beales et al.
patent: 4560667 (1985-12-01), Lucas et al.

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