High speed electro-optic modulator

Details High speed electro-optic modulator High speed electro-optic modulator

1999-01-20

2000-05-30

Ben, Loha

Optical: systems and elements

Optical modulator

Light wave temporal modulation

385 2, 385 3, 385 9, 430321, G02F 107

Patent

active

060697296

ABSTRACT:
High speed electro-optic modulator designs are presented. One design includes first and second electrodes offset from each other and further includes a substrate supporting a laterally confined ferroelectric material, for example, LiNbO.sub.3. The confined ferroelectric material, in turn, supports first and second optical waveguides. In a second design, a thin ferroelectric film is fabricated on a substrate that supports first and second electrodes. The thin ferroelectric film has a first thickness in which the first and second optical waveguides are supported, and a second thickness under a portion of the electrodes. The second thickness, for example, may be zero. A third design includes a thin ferroelectirc film fabricated on a substrate and supporting first and second electrodes. The thin ferroelectric film has a reduced thickness in at least one electrode gap region.

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patent: 5895742 (1999-04-01), Lin
Design of Ultra-Broad-Band LiNbO.sub.3 Optical Modulators with Ridge Structure; Mitomi, Noguchi and Miyazawa, 1995 IEEE.

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