Optical waveguide control device employing directional coupler o

Details Optical waveguide control device employing directional coupler o Optical waveguide control device employing directional coupler o

1990-07-20

1991-09-24

Lee, John D.

Optical waveguides

Directional optical modulation within an optical waveguide

Electro-optic

385 41, G02F 101

Patent

active

050509470

ABSTRACT:
An optical control device comprises optical waveguides provided on a substrate having an electrooptic effect, a buffer layer provided on the substrate to cover the optical waveguides, and control electrodes provided on the buffer layer for applying a predetermined voltage across the optical waveguides. The optical waveguides has a coupling portion, at which an interval of the optical waveguides is narrowed. In this optical control device, a distortion dispersing structure is provided in the vicinity of the control electrodes to disperse distortion locally accumulated in the vicinity of the control electrodes to the whole area of the substrate uniformly.

REFERENCES:
patent: 4763974 (1988-08-01), Thaniyavarn
patent: 4820009 (1989-04-01), Thaniyavarn
patent: 4842367 (1989-06-01), Djupsjobacka
patent: 4877299 (1989-10-01), Lorenzo et al.
patent: 4904039 (1990-02-01), Soref
patent: 4932736 (1990-06-01), Su
patent: 4940305 (1990-07-01), Thaniyavarn
patent: 4950042 (1990-08-01), Gaylor et al.

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