Method for production of glass preform for optical fibers

Details Method for production of glass preform for optical fibers Method for production of glass preform for optical fibers

1987-12-10

1989-03-14

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 311, 65DIG16, C03P 37014, C03B 37018

Patent

active

048121550

ABSTRACT:
A method for producing a glass preform for optical fibers in which fluorine is efficiently incorporated into the preform without incorporation of Fe or Cu. A fine glass particle mass, made primarily of quartz, is converted into transparent glass by heating it in a gas atmosphere containing at least a fluorine-based compound gas and a chlorine-based compound gas. The preferred heating range is 1,100.degree. to 1,400.degree. C.

REFERENCES:
patent: 3933454 (1976-01-01), Deluca
patent: 4317668 (1982-03-01), Susa
patent: 4426216 (1984-01-01), Satoh
patent: 4629485 (1986-12-01), Berkey

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