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US 4,468,413 AGranted
Method of manufacturing fluorine-doped optical fibers
AssigneeU.S. Philips Corporation
InventorPeter K. Bachmann
Life of this patent
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Abstract
Doped silica glass can be manufactured by reacting gaseous vapors of silica-forming compounds and dopant-forming compounds. Increased fluorine dopant can be provided with less fluorine dopant-forming compound, when the fluorine dopant-forming compound is hexafluoroethane (C.sub.2 F.sub.6).
Claims5
A method of manufacturing fluorine-doped optical fiber preforms comprising the steps of:
- providing gases or vapors of oxygen, SiCl.sub.4, and C.sub.2 F.sub.6 ;
- mixing the gases and vapors;
- passing the mixture through a glass tube having an inner wall;
- causing the mixture to react to produce at least one fluorine-doped glass layer on the inner wall of the tube, said layer having a refractive index;
- and
- providing at least one glass core layer on the fluorine-doped glass layer, said glass layer having a refractive index greater than the refractive index of the fluorine-doped layer.
3 more elements
A method of manufacturing layers of fluorine-doped glass comprising the steps of:
- providing gases or vapors of oxygen, SiCl.sub.4 and C.sub.2 F.sub.6 ;
- mixing the gases and vapors;
- passing the mixture over a substrate;
- and
- causing the mixture to react to produce at least one fluorine-doped glass layer on the substrate.
2 more elements
Dependencies are inferred from the claim text.