METHOD AND APPARATUS FOR MANUFACTURING AN OPTICAL FIBER CORE ROD
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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Dec 22, 2005
filing date -
Dec 23, 2004
priority date (Note) -
Abandoned
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Abstract
A multi-functional method and apparatus are disclosed for producing a low hydroxyl ion-containing core rod from a tube suitable for the production of low-water optical fibers. The method and apparatus combine the use of process steps of (1) hermetically sealing a tubular quartz handle of a tubular porous core preform to a tube used to feed the porous preform into a sintering furnace, (2) dehydration and sintering, and (3) elongation of the sintered preform under vacuum, all without exposing the preform's central aperture surface to ambient atmosphere.
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