Doped glass and process for making
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United States of America Patent
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-
Dec 10, 1985
Issued Date -
N/A
app pub date -
Mar 18, 1983
filing date -
Aug 18, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Technique for making glass having a predetermined refractive index profile using fluorine doping and fluorine etching. A substrate glass body is coated with a plurality of successively applied vapor deposited glass layers wherein each succeeding layer is built with a larger quantity of fluorine than the adjacent preceding layer. The amount of the doping in each layer is such as to achieve the desired refractive index profile. Fluorine etching is employed to provide a uniform core before the glass body is heat fused into a rod-like structure suitable for the preparation of light waveguides for use in optical communications technology.
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