Method of producing rod-shaped base material for optical transmi

Details Method of producing rod-shaped base material for optical transmi Method of producing rod-shaped base material for optical transmi

1981-08-13

1983-12-20

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65 184, 65 31, 65 61, C03B 37025

Patent

active

044215398

ABSTRACT:
There is described a method of producing a rod-shaped base material for an optical transmission fiber which has the steps of advantageously measuring the refractive index distribution of the transparent glass rod obtained. The method contemplates heating and sintering the glass soot unit before the step of covering quartz glass material onto the transparent glass rod and removing the outer peripheral part of the transparent glass rod in which the value of the refractive index is largely displaced from a reference in a predetermined range. The rod-shaped base material thus produced exhibits very wide band width transmission characteristics.

REFERENCES:
patent: 4264347 (1981-04-01), Shintani et al.

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