Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2005-10-11
2005-10-11
Lee, John R. (Department: 2881)
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
C385S001000, C385S002000, C385S004000, C385S129000, C385S130000, C385S131000, C385S132000, C250S3960ML, C250S492300, C250S491100, C378S004000, C378S015000, C378S020000, C378S068000, C378S208000, C378S065000, C378S143000, C378S144000, C378S195000, C378S196000, C378S197000, C378S198000, C378S210000, C248S637000, C248S638000, C248S672000, C248S674000, C248S676000, C248S121000, C248S122100, C248S123110, C248S127000, C248S218400, C248S219200, C248S575000, C248S612000, C359S248000, C359S279000
Reexamination Certificate
active
06954558
ABSTRACT:
An apparatus and method for high speed phase modulation of optical beam with reduced optical loss. In one embodiment, an apparatus includes a first region of an optical waveguide disposed in semiconductor material. The first region has a first conductivity type. The apparatus also includes a second region of the optical waveguide disposed in the semiconductor material. The second region has a second conductivity type opposite to the first conductivity type. A first contact is included in the apparatus and is coupled to the optical waveguide at a first location in the first region outside an optical path of an optical beam to be directed through the optical waveguide. The apparatus also includes a first higher doped region included in the first region and coupled to the first contact at the first location to improve an electrical coupling between the first contact and the optical waveguide. The first higher doped region has a higher doping concentration than a doping concentration within the optical path.
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Blakley Sokoloff Taylor & Zafman LLP
Intel Corporation
Lee John R.
Souw Bernard E.
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