Thin-film optical waveguide

Details Thin-film optical waveguide Thin-film optical waveguide

1973-07-23

1976-11-09

Corbin, John K.

350160R, G02B 514

Patent

active

039907759

ABSTRACT:
It is known to form an optical waveguiding thin film on a substrate. For various practical reasons, it is often desired that an optical beam coupled to the film be laterally confined so as to propagate only in a longitudinal stripe portion of the film. As disclosed herein, this is accomplished by depositing a material on a selected portion of the film surface to establish in a narrow longitudinal region of the film an effective index of refraction that is higher than the index of the remainder of the film. In this way a longitudinal waveguiding stripe is formed in the film without the necessity of irradiating, etching or otherwise directly treating the film itself.

REFERENCES:
patent: 3537020 (1970-10-01), Anderson
patent: 3795433 (1974-03-01), Channin
patent: 3795434 (1974-03-01), Ash
Noda et al., "A Novel Optical Waveguide for Integrated Optics" Digest of Technical Papers, 1973 IEEE/OSA Conference on Laser Engineering Applications, May 30-June 1, 1973, p. 67.

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