Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Patent
1998-01-21
2000-04-25
Silverman, Stanley S.
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
65429, 65435, 65DIG15, 65411, 65412, C03C 332, C03C 1300, C03B 37075, G02B 600
Patent
active
06053012&
ABSTRACT:
A method for manufacturing a glass preform from a metal sulfide chalcogenide glass to which a large amount of light emitting substances can be added includes steps of etching a surface made of the chalcogenide glass or oxychalcogenide glass of disc shape core and clad forming glass starting materials by an etchant including an acid and a compound reacting with a hydrogen chalcogenide, and forming the core forming glass starting material and the clad forming glass starting material into a united body serving as a glass preform. In a method for manufacturing a single-mode glass fiber using a preform method by drawing the glass preform whose outer round surface is made of a chalcogenide glass or oxychalcogenide glass, the outer round surface of the glass preform is etched using an etchant including an acid and a compound reacting with a hydrogen chalcogenide and then drawn into the glass fiber. In another method for manufacturing a glass fiber by drawing a rod-in-tube in which an outer round surface of the rod and inner and outer round surfaces of the tube are made of a chalcogenide glass or oxychalcogenide glass, the round surfaces made of the chalcogenide glass or oxychalcogenide glass are etched by the etchant including an acid and a compound reacting with a hydrogen chalcogenide and then drawn into the glass fiber.
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Colaianni Michael P.
Hoya Corporation
Silverman Stanley S.
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