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

1987-10-13

1989-03-14

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 32, C03B 37012

Patent

active

048121541

ABSTRACT:
A method for producing a glass preform for an optical fiber which comprises the steps of
inserting a glass rod from one end of a glass tube while supplying a gas from the other end of the glass tube, flowing the gas through a clearance between the glass rod and the glass tube, exhausting the gas from said one end of the glass tube to outside of the glass tube, and
heating and collapsing the glass tube on the glass rod to integrate them and to form the glass preform, which method yields a glass preform from which an optical fiber having improved strength and low attenuation of light is produced.

REFERENCES:
patent: 4518407 (1985-05-01), Black
patent: 4602926 (1986-07-01), Harrison
patent: 4668263 (1987-05-01), Yokota

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