Method and apparatus for polarization insensitive phase...

Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic

Reexamination Certificate

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C385S129000, C359S245000, C359S248000

Reexamination Certificate

active

07116847

ABSTRACT:
An apparatus and method for modulating a phase of optical beam independent of polarization. In one embodiment, an apparatus according to embodiments of the present invention includes a first region of an optical waveguide disposed in semiconductor material, the first region having a first conductivity type, and a second region of the optical waveguide disposed in the semiconductor material, the second region having a second conductivity type opposite to the first conductivity type. The apparatus also includes a substantially V shaped insulating region disposed between the first and second regions of the optical waveguide, wherein a vertex of the substantially V shaped insulating region forms an intersecting line that is substantially parallel to an optical path of an optical beam to be directed through the optical waveguide.

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patent: 09043557 (1997-02-01), None
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PCT/US2005/001601, PCT Search Report and Written Opinion, Jun. 8, 2005.

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