Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2007-05-01
2007-05-01
Connelly-Cushwa, Michelle (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S018000, C385S037000, C385S050000, C398S087000
Reexamination Certificate
active
09838862
ABSTRACT:
A coupler-multiplexer permutation switch (CMPS) integrates multiplexng and switching functions on a single substrate. It has a single-mode/multi-mode backward coupler followed by a digital optical switch (DOS). In the CMPS, the single-mode waveguide channels are phase-matched through a grating with the corresponding, backward-propagating modes of a multi-mode waveguide. The different modes are subsequently separated in a digital optical switch. Different permutations are obtained by electronically controlling an effective-index distribution of DOS output waveguides.
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Baker & Botts LLP
Connelly-Cushwa Michelle
Rahll Jerry T
The Trustees of Columbia University in the City of New York
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