Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1989-12-22
1991-11-26
Fisher, Richard V.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 33, 65 182, 501 10, 501 38, C03C 2502
Patent
active
050679759
ABSTRACT:
A method of making an optical waveguide fiber with a fatigue resistant TiO.sub.2 -SiO.sub.2 outer cladding, and a substantially glass blank for drawing into optical fiber, wherein a glass soot TiO.sub.2 -SiO.sub.2 outermost layer, with an initial TiO.sub.2 concentration greater than 10.5 wt. %, is deposited on a preform, and the preform is exposed to an atmosphere of chlorine at a high temperature, and the resulting TiO.sub.2 concentration in the outermost layer of the TiO.sub.2 -SiO.sub.2 outer cladding of the substantially glass blank is less than the initial TiO.sub.2 concentration. In the glass blank form, the outermost layer includes a substantial volume percentage of crystalline phases and in the fiber form, the outermost layer includes inhomogeneities.
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Backer Marcella R.
Cavender Ralston
Elder Melanie L.
Jones Peter C.
Murphy James A.
Bruckner John J.
Corning Incorporated
Fisher Richard V.
Taylor, Jr. K. McNeill
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