Method of fabricating optical fiber base material

Details Method of fabricating optical fiber base material Method of fabricating optical fiber base material

1985-07-30

1989-05-23

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, C03B 37018

Patent

active

048327212

ABSTRACT:
A method of fabricating an optical fiber base material which comprises the steps of sequentially accumulating glass made of doped quartz on the inner peripheral surface of a quartz tube to form glass layers, and then forming by heating means the interior of the tube in a solid state, temporarily thermally shrinking the tube when the accumulating step of the glass layers approaches the final period, then again accumulating glass on the inner periphery of the resultant glass layer and then forming the interior of the tube in a solid state. Thus, this method can reduce the center-dip without loss of the controllability of a refractive index distribution.

REFERENCES:
patent: 4280829 (1981-07-01), Sheth
patent: 4304581 (1981-12-01), Saifi
patent: 4453961 (1984-06-01), Berkey
patent: 4504299 (1985-03-01), MacChesney et al.
patent: 4632684 (1986-12-01), Karbassivoon et al.
patent: 4636235 (1987-01-01), Glessner et al.
patent: 4636236 (1987-01-01), Glessner et al.

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