Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-08-23
2005-08-23
Healy, Brian (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling structure
C385S014000, C385S015000, C385S031000, C385S043000, C385S129000
Reexamination Certificate
active
06934446
ABSTRACT:
The invention is an improved planar waveguide device comprising a plurality of optical waveguides and one or more crossover regions where two waveguides intersect at an angle. In accordance with the invention, loss and crosstalk produced by the crossover are reduced by segmenting the waveguides across the region of intersection. Advantageously, the segments are also enlarged in width (as compared to transmission regions of the waveguide remote from the crossover) and offset with respect to the longitudinal axis of the waveguide. In regions where the segments intersect, they merge into a complex segment having a shape corresponding to the periphery of the segment intersection.
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Healy Brian
Lepisto Ryan
Lucent Technologies - Inc.
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