Methods for manufacturing low water peak optical waveguide...

Details Methods for manufacturing low water peak optical waveguide... Methods for manufacturing low water peak optical waveguide...

2011-04-26

2011-04-26

Dehghan, Queenie (Department: 1741)

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

C065S439000, C065S421000, C065S422000, C065S426000, C065S427000

Reexamination Certificate

active

07930905

ABSTRACT:
A method of manufacturing a cylindrical glass optical waveguide preform having a low water content centerline region, for use in the manufacture of optical waveguide fiber, is disclosed. The centerline region of the glass optical waveguide preform has a water content sufficiently low such that an optical waveguide fiber producible from the glass optical waveguide preform of the present invention exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km, at a measured wavelength of 1380 nm. Method of manufacture of a porous core mandrel used in the manufacture of such a glass optical waveguide preform is also disclosed.

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International Search Report and Written Opinion for International Application No. PCT/US05/35952 completed Jul. 13, 2006.

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