US 4,123,483 A · Manufacturing method of an optical waveguide

Abstract

A method of manufacturing an O-ring type optical waveguide wherein a layer of fused silica is formed on the smooth cylindrical surface of an elongated member of fused silica and thereafter a thin layer of doped fused silica having an index of refraction greater than that of said fused silica is formed over said layer of fused silica. A second layer of fused silica is then formed over the layer of doped fused silica and the composite structure is heated to its drawing temperatures and drawn to reduce the cross sectioned area thereof to form an optical waveguide having a cylindrical layer of higher refractive index interposed between a core and an outer cylindrical layer of lesser refractive index.

Claims18

Dependent claims

A method of manufacturing an optical waveguide comprising the steps of,

providing an elongated member of fused silica having a smooth cylindrical surface,
forming a layer of fused silica on said smooth surface,
forming a thin layer of doped fused silica having an index of refraction greater than that of said fused silica over said layer of fused silica,
forming a second layer of fused silica over said layer of doped fused silica,
heating the composite structure so formed to the drawing temperature of the materials thereof, and
drawing the heated structure to reduce the cross-sectional area thereof and form an optical waveguide having a cylindrical layer of higher refractive index interposed between a core and an outer cylindrical layer of lesser refractive index.

3 more elements

Dependencies are inferred from the claim text.

Manufacturing method of an optical waveguide

Life of this patent

Manufacturing method of an optical waveguide

Life of this patent

Abstract

Claims18