Method for producing glass preform for optical fiber

Details Method for producing glass preform for optical fiber Method for producing glass preform for optical fiber

1990-01-29

1990-12-25

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65900, 65DIG16, C08B 37018

Patent

active

049799711

ABSTRACT:
A method for producing a glass preform for an optical fiber is disclosed. The method comprises forming a soot preform of glass fine particles comprising SiO.sub.2 by flame hydrolysis or solution hydrolysis of a starting glass material and sintering the soot preform in an atmosphere containing at least SiF.sub.4 to obtain a glass preform which is free from an increase in absorption due to impurities and has sufficiently low attenuation of light transmission.

REFERENCES:
patent: 3933454 (1976-01-01), De Luca
patent: 4289517 (1981-09-01), Bailey
patent: 4629485 (1986-12-01), Berkey
Hawley, G. The Condensed Chemical Dictionary; Van Nostrand Reinhold Company, N.Y. 1981, p. 922.
Gmelins Handbruch, Silicium, Part B, System No. 15, 1959, p. 615.

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