Method for producing optical fiber in a hydrogen atmosphere to prevent attenuation
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United States of America Patent
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Oct 22, 1991
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N/A
app pub date -
Sep 24, 1990
filing date -
Sep 24, 1990
priority date (Note) -
Expired
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Abstract
An optical fiber is drawn from a draw blank that is situated in a furnace muffle. An end of the blank is heated to a temperature sufficient to permit a fiber to be drawn therefrom. During the fiber drawing operation, the blank is subjected to a gas containing an amount of hydrogen sufficient to reduce the number of defects in the fiber. The resultant fiber therefore experiences little or no latent attenuation increase when it is later subjected to a hydrogen containing atmosphere.
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