Processes of manufacture of fluoride glass fibers and optical co

Details Processes of manufacture of fluoride glass fibers and optical co Processes of manufacture of fluoride glass fibers and optical co

1985-05-01

1987-04-21

Kellogg, Arthur

Glass manufacturing

Processes

Forming product or preform from molten glass

65 320, 65 2, 65 605, 65DIG16, C03C 2502

Patent

active

046593551

ABSTRACT:
A process for manufacturing optical fibers and components from bars or molds of fluoride glass draws out optical quality molds from highly pure glass. The glass is stretched or fibered into optical fibers in a dry atmosphere free of dust, organic, metallic or mineral vapors. The process leads to a low hydroxyl content fluoride glass which is used in the manufacture of optical fibers and components. The dehydration of the fluoride mixture occurs during the steps of prolonged heating at under 450.degree. C. in the presence of fluoride or ammoniumbifluoride, and of holding the molten mixture at a high temperature until dehydration occurs. The drawing out, stretching, and fibering are carried out in a vacuum.

REFERENCES:
patent: 4154592 (1979-05-01), Bailey
patent: 4161505 (1979-07-01), Shiraishi et al.
patent: 4165223 (1979-08-01), Powers
patent: 4249925 (1981-02-01), Kawashima et al.

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