Method of manufacturing optical fiber

Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...

Reexamination Certificate

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Details

C065S381000, C065S382000, C065S424000, C065S510000, C264S001240

Reexamination Certificate

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06935139

ABSTRACT:
The method of manufacturing an optical fiber in accordance with the present invention comprises a step of yielding an optical fiber by drawing an optical fiber preform softened upon heating, wherein a temperature at which the optical fiber preform is softened is at least 1800° C., whereas the optical fiber preform or optical fiber has a glass cooling rate of 4000° C./sec or less when attaining a temperature of 1800° C.

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patent: 61-147233 (1986-09-01), None
patent: 4-198036 (1992-07-01), None
patent: 6-2603 (1994-01-01), None
patent: 8-9490 (1996-01-01), None

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