Method of forming optical fiber having laminated core

Details Method of forming optical fiber having laminated core Method of forming optical fiber having laminated core

1983-06-01

1985-07-09

Smith, William

Glass manufacturing

Processes

Forming product or preform from molten glass

65 32, 65 182, C03B 3701

Patent

active

045280096

ABSTRACT:
A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. In one embodiment, the known CVD process for making preforms is modified by halting rotation of the substrate tube while the tube is asymmetrically heated by a source that traverses the length of the tube. A vapor mixture flowing through the tube reacts only near that region of the inner surface of the tube that is being heated. This forms a longitudinal strip of glass particles. The flow of reactants stops, the tube is rotated, and it is traversed by heating means which heats the tube to a temperature sufficiently high to fuse the glass particles and forming a longitudinal strip of glassy material.

REFERENCES:
patent: 3980459 (1976-09-01), Li
patent: 3982916 (1976-09-01), Miller
patent: 4277272 (1981-07-01), Schneider
patent: 4395270 (1983-07-01), Blankenship et al.
patent: 4465336 (1984-08-01), Huber et al.

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