Method of quickly manufacturing an optical waveguide

Details Method of quickly manufacturing an optical waveguide Method of quickly manufacturing an optical waveguide

1990-07-06

1991-10-15

Lindsay, Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 314, 65111, C03C 2100

Patent

active

050571354

ABSTRACT:
In a method of manufacturing an optical waveguide by the use of a substrate which has a first ion of a first refractive index and primary and secondary surfaces, an optical passage is formed in the substrate by diffusing through the primary surface a second ionizable species of a second refractive index greater than the first refractive index. A diffusion-accelerator layer is deposited on the secondary surface to accelerate diffusion of secondary ions resulting from the second ionizable species. To this end, the diffusion-accelerator layer is composed of an additional ionizable species which is formed into additional ions able to react with the first ions. Such reaction of the additional ions with the first ions lends itself to reduce the amount of the first ions in the substrate and to promote diffusion of the second ions into the substrate.

REFERENCES:
patent: 3879110 (1975-04-01), Furukawa
patent: 3880630 (1975-04-01), Izawa
patent: 4913717 (1990-04-01), Cooper

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