Device and method for manufacturing an optical preform

Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...

Reexamination Certificate

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C065S413000, C065S418000

Reexamination Certificate

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07854148

ABSTRACT:
The present invention relates to a device for manufacturing an optical preform by means of an internal vapour deposition process, said device comprising an energy source and a substrate tube, which substrate tube comprises a supply side for supplying glass-forming precursors and a discharge side for discharging constituents that have rot been deposited on the interior of the substrate tube, said energy source being movable along the length of the substrate tube between a point of reversal at the supply side and a point of reversal at the discharge side.

REFERENCES:
patent: 4389229 (1983-06-01), Jang et al.
patent: 4826288 (1989-05-01), Mansfield et al.
patent: 6430967 (2002-08-01), Mueller
patent: 2002/0073739 (2002-06-01), Zhang et al.
patent: 2002/0157423 (2002-10-01), Soufiane
patent: 2003/0056548 (2003-03-01), Sandro et al.
patent: 2002114534 (2002-04-01), None

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