Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Reexamination Certificate
2005-08-30
2005-08-30
Hug, Eric (Department: 1731)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
C065S381000, C065S382000, C065S424000, C065S510000, C264S001240
Reexamination Certificate
active
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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Kuwahara Kazuya
Nagayama Katsuya
Shimazu Takayuki
Hug Eric
McDermott Will & Emery LLP
Sumitomo Electric Industries
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