Patent · US Expired

Method and apparatus for fabricating optical fibers

US4407667A · kind A · utility

22Cited by

8References

10Claims

0Family size

Inventors

Georges Le Noane · Lannion, FR
Daniel Boscher · Lannion, FR

Key dates

Filing date	Jul 20, 1981
Grant date	Oct 4, 1983
Priority date	—
Expiry date	Jul 20, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2205/30
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

For continuous manufacture of optical fibers, bars of homogeneous silica-base material are welded in end to end relation. A silica cladding containing a proportion of index varying dopant which varies as the diameter of the cladding increases is progressively applied on a bar at a time to form successive preforms and the welded preforms are drawn out into fibers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.