Electrically controlled optical device

Details Electrically controlled optical device Electrically controlled optical device

1990-02-14

1992-07-07

Lee, John D.

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

385 2, G02B 610, G02F 101

Patent

active

051290170

ABSTRACT:
An electrically controlled optical device includes a traveling wave electrode structure, a shield conductor and a thick buffer layer having a low dielectric constant. The thickness of an overlaid layer disposed between the traveling wave electrode structure and the shield conductor, as well as the thickness of the buffer layer, is determined so that the effective index of a microwave transmitted through the traveling wave electrode structure approaches the effective index of light transmitted through an optical waveguide, so that the microwave conductor loss is reduced, and so that the characteristic impedance of the traveling wave electrode structure approaches the characteristic impedance of an associated external microwave circuit.

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