Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2011-01-04
2011-01-04
Le, Uyen-Chau N (Department: 2874)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
C385S001000, C385S002000, C385S003000, C385S008000, C385S129000, C385S132000
Reexamination Certificate
active
07865053
ABSTRACT:
In one embodiment, the apparatus includes a substrate having a surface and an optical waveguide having a ridge-shaped semiconductor optical core, the ridge-shaped semiconductor optical core being located over the surface. The apparatus may further include a first semiconductor slab being in contact with a first portion of the ridge-shaped semiconductor optical core, and a second semiconductor slab being in contact with a second portion of the ridge-shaped semiconductor optical core, the second semiconductor slab being farther from the surface than the first semiconductor slab.
REFERENCES:
patent: 6374001 (2002-04-01), Bozeat et al.
patent: 7447395 (2008-11-01), Montgomery et al.
patent: 2005/0244125 (2005-11-01), Liu
patent: 2006/0039666 (2006-02-01), Knights et al.
patent: 2007/0081781 (2007-04-01), Blauvelt et al.
Alcatel-Lucent USA Inc.
Hitt Gaines PC
Le Uyen-Chau N
Smith Chad H
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