Optical communications – Multiplex – Optical switching
Reexamination Certificate
2007-03-20
2007-03-20
Payne, David C. (Department: 2613)
Optical communications
Multiplex
Optical switching
C398S082000, C398S079000, C398S050000, C385S017000
Reexamination Certificate
active
09779315
ABSTRACT:
The present invention provides a wide-sense, non-blocking WDM cross-connect that utilizes a relatively small number of wavelength interchangers. The cross-connect of the present invention comprises first, second and third fabrics and one or more wavelength interchangers that interconnect the first and second fabrics. Demands that require a change in wavelength are routed through the first fabric, through one or more of the wavelength interchangers, and through the second fabric. Demands that do not require a change in wavelength are only routed through the third fabric. A routing algorithm is utilized to ensure that any sequence of connection requests and withdrawals can be routed without disturbing any currently routed requests.
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Rasala April Patricia
Wilfong Gordon Thomas
Lucent Technologies - Inc.
Payne David C.
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