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

1992-08-31

1993-06-22

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65900, 65DIG16, C03B 37018

Patent

active

052213099

ABSTRACT:
A method for producing a glass preform, which 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: 3433454 (1976-01-01), De Luca
patent: 4289517 (1981-09-01), Bailey
patent: 4629485 (1986-12-01), Berkey
Chemical Abstracts, vol. 103, No. 12, Sep. 23, 1985, p. 261 abstract No. 91938w "Optical Fiber Containing Fluorine".
Gmelins Handbruch, Silicium, part B, System No. 15, 1959 p. 615.
Hawley, G.; The Condensed Chemical Dictionary; Van Nostrand Reinhold Company, N.Y. 1981, p. 922.

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