Planar optical waveguide comprising thin metal oxide film incorp

Details Planar optical waveguide comprising thin metal oxide film incorp Planar optical waveguide comprising thin metal oxide film incorp

1978-07-24

1980-10-14

Levy, Stewart J.

350162R, G02B 514

Patent

active

042277698

ABSTRACT:
Enhanced optical coupling by phase evanescent fields is achieved by covering the planar layer of a waveguide with a thin metal oxide film incorporating a relief phase grating. The grating is originally formed in a metallic film covering the planar layer, which metallic film is converted to a metal oxide film by heating in an oxygen-containing atmosphere.

REFERENCES:
patent: 3912363 (1975-10-01), Hammer
patent: 3982810 (1976-09-01), Tamir et al.
patent: 4082425 (1978-04-01), Miller
patent: 4102560 (1978-07-01), Miller
patent: 4156206 (1979-05-01), Comerford et al.

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