Integrated optical device with zero-gap and well-spaced regions

Details Integrated optical device with zero-gap and well-spaced regions Integrated optical device with zero-gap and well-spaced regions

1991-01-04

1992-01-21

Ullah, Akm

Optical waveguides

Integrated optical circuit

385 42, 385129, G02B 610, G02B 600

Patent

active

050823418

ABSTRACT:
An integrated optical device including a direction coupler between first and second waveguides whereby to transfer light energy between the first and second waveguides, the directional coupler including a first region in which the first and second waveguides converge towards one another while the electromagnetic field regions associated with the waveguides interact, and a second region in which the first and second waveguides are merged into a single waveguide structure having at least twice the width of the first or second waveguide, the first and second regions being dimensioned to control or eliminate the dependence of the directional coupler upon polarization of light in the waveguides.

REFERENCES:
patent: 4669815 (1987-06-01), Thaniyavarn
patent: 4917449 (1990-04-01), Granestrand
patent: 4961619 (1990-10-01), Hernandez-Gil et al.

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