Optical waveguide manufacture
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United States of America Patent
Stats
-
Mar 29, 1988
Issued Date -
N/A
app pub date -
Mar 30, 1987
filing date -
Mar 19, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Optical waveguide having a fused silica core and a fluorine doped fused silica cladding is made by depositing particulate core silica onto a support tube and then drying and densifying the silica. Further particulate cladding silica is deposited and is heated in a fluorine containing gas to effect drying, fluorine diffusion into and sintering the cladding silica. The support tube is etched away and the resulting tubular preform is heated to collapse it into a rod from which waveguide is drawn, the waveguide having a fluorine doped silica cladding.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
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- Citation Ranking not provided for expired patents
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