Optical waveguides – With optical coupler
Reexamination Certificate
2006-04-25
2006-04-25
Palmer, Phan (Department: 2874)
Optical waveguides
With optical coupler
C385S014000, C385S045000, C385S129000, C398S079000
Reexamination Certificate
active
07035494
ABSTRACT:
A multimode interference device and method of making the same comprises at least one input port, at least one output port, a multimode interference region separating the input port from the output port, and at least one subregion in the multimode interference region, wherein a self-image length within the multimode interference region is reduced by a factor that is approximately equal to one plus a number of subregions configured in the multimode interference region, wherein the at least one subregion is configured to have an effective width and effective refractive index running longitudinally through the multimode interference region. Additionally, the subregion may comprise at least one slot.
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Adams William V.
Palmer Phan
The United States of America as represented by the Secretary of
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