Method of manufacturing an optical fiber using a preform obtained by collapsing a tube
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Sep 29, 1988
filing date -
Sep 29, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to manufacture a fiber by drawing a preform, said preform is made by collapsing a thick-walled silica tube having a reduced pressure established therein and heated in successive passes. The tube is prevented from ovalizing by beginning each pass with a portion bearing against a coaxial internal conical guide. The invention is applicable to low cost fiber manufacture.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully