Optical fiber fabrication by a plasma generator
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United States of America Patent
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May 25, 1982
Grant Date -
N/A
app pub date -
Apr 25, 1980
filing date -
Apr 25, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Optical fiber preforms are produced by means of a duplex hot zone, a section of which is defined by an r.f. generated plasma fire ball. The process operates within a tube with gaseous precursor material reacting within the hot zone to result in deposited material of the desired preform glass composition. A 'smoothing' region within the hot zone is defined by tube surface at a temperature sufficiently elevated to consolidate any particulate material resulting from reaction. In some aspects, the disclosed procedures may be regarded as Modified Chemical Vapor Deposition. Commercial significance resides in significantly increased throughput of preforms and, consequently, in fiber.
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