Soot layer formation for solution doping of glass preforms
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United States of America Patent
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app pub date -
Dec 1, 2006
filing date -
Mar 11, 2002
priority date (Note) -
Abandoned
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Abstract
The reproducibility of preforms made by solution doping is significantly improved by adding an internal heat source, such as N.sub.2O, as a processing gas during the soot deposition process. The addition of the internal heat source gas results in forming a surface soot layer which exhibits a relatively uniform and consistent morphology. The improvement in the soot surface morphology results in improving the uniformity of the amount of solution dopant retained in the soot layer from preform to preform.
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