Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2007-04-24
2007-04-24
Lee, John D. (Department: 2874)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
C257S186000, C257S458000
Reexamination Certificate
active
11121511
ABSTRACT:
A semiconductor waveguide based optical receiver is disclosed. An apparatus according to aspects of the present invention includes an absorption region defined along an optical waveguide. The absorption region includes a first type of semiconductor material having a first refractive index. The apparatus also includes a multiplication region defined along the optical waveguide. The multiplication region is proximate to and separate from the absorption region. The multiplication region includes a second type of semiconductor material having a second refractive index. The first refractive index greater than the second refractive index such that an optical beam directed through the optical waveguide is pulled towards the absorption region from the multiplication region and absorbed in the absorption region to create electron-hole pairs from the optical beam. The multiplication region includes first and second doped regions defined along the optical waveguide. The first and second doped regions have opposite polarity to create an electric field to multiply the electrons created in the absorption region.
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Intel Corporation
Lee John D.
Peace Rhonda S.
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