Method of manufacturing a solid preform

Details Method of manufacturing a solid preform Method of manufacturing a solid preform

2006-07-04

2006-07-04

Vincent, Sean (Department: 1731)

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

C065S419000, C065S420000, C065S429000

Reexamination Certificate

active

07069749

ABSTRACT:
The present invention relates to a method of manufacturing a solid preform by moving a heat source parallel to the longitudinal axis of a substrate tube, whose inner surface is coated with one or more doped or undoped glass layers, so as to collapse the substrate tube into the solid preform in a number of passes, with an etchant being supplied to the interior of the substrate tube after a number of passes of the heat source.

REFERENCES:
patent: 6131413 (2000-10-01), Rousseau et al.
patent: 6821449 (2004-11-01), Caplen et al.
patent: 0 972 752 (2000-01-01), None
patent: 1 035 083 (2000-09-01), None
patent: 1 260 841 (2002-11-01), None

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