Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2007-04-03
2007-04-03
Doan, Jennifer (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S015000, C359S333000
Reexamination Certificate
active
11215851
ABSTRACT:
An optical device comprises a first substrate wafer with at least one buried optical waveguide on an approximately flat planar surface of the substrate and a second substrate wafer with at least a second buried optical waveguide. The waveguides so formed may be straight or curved along the surface of the wafer or curved by burying the waveguide at varying depth along its length. The second wafer is turned (flipped) and bonded to the first wafer in such a manner that the waveguides, for example, may form an optical coupler or may cross over one another and be in proximate relationship along a region of each. As a result, three dimensional optical devices are formed avoiding the convention techniques of layering on a single substrate wafer.
REFERENCES:
patent: 4799234 (1989-01-01), Haeussler et al.
patent: 4896932 (1990-01-01), Cassidy
patent: 5357363 (1994-10-01), Li et al.
patent: 5656181 (1997-08-01), Biasse et al.
Feuer Mark D.
Frigo Nicholas J.
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