Method of forming an optical channel waveguide by gettering

Details Method of forming an optical channel waveguide by gettering Method of forming an optical channel waveguide by gettering

1992-02-04

1993-03-23

Lindsay, Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 311, 65 31, 65111, 2191218, 21912129, 385129, 385130, 427 36, 427 531, 427162, 4273762, C03C 1500

Patent

active

051960419

ABSTRACT:
A method of forming an optical channel waveguide by gettering includes forming on a substrate a porous waveguide layer containing an index of refraction raising dopant in a compound; sealing a portion of the waveguide layer along a path; and reacting the component, including the index of refraction raising dopant, with a reactant in the unsealed portion of the waveguide layer to form a volatile product from the reactant and dopant to deplete the dopant in the unsealed portion of the waveguide layer and reduce its index of refraction relative to that in the path to produce a channel waveguide along the path.

REFERENCES:
patent: 4676820 (1987-06-01), LeSergent et al.
patent: 4756734 (1988-07-01), Kersten et al.
patent: 4765819 (1988-08-01), Kersten et al.
patent: 4886538 (1989-12-01), Mahapatra

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