Method for manufacturing optical fibre preforms
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United States of America Patent
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Oct 28, 2008
Grant Date -
Jun 17, 2004
app pub date -
Nov 30, 2001
filing date -
Dec 19, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Multi-flame burner wherein each flame is separated with respect to the neighboring flame by at least one separating tube made of a heat resistant material, for example, quartz glass or ceramic material. The burner also has a plurality of co-axial pipes, preferably made of a metallic material. The cross section of the upper end of the separating tube can be modified in order to increase the deposition rate of the burner. Methods for manufacturing optical fibre preforms by vapour deposition using the multi-flame deposition burners.
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