Process for producing optical fiber preform
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United States of America Patent
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Mar 9, 1982
Grant Date -
N/A
app pub date -
Jul 21, 1980
filing date -
Jul 20, 1979
priority date (Note) -
Expired
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Abstract
A process for producing an optical fiber preform which comprises forming a particulate glass rod in which the dopant concentration gradually increases toward the center of its cross section, and gradually heating the rod starting at a temperature below the minimum collapsing point of the fine glass particles in the center of the rod in such a manner that the softening of the rod proceeds from the center outward, to thereby produce a transparent glass rod.
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