Optical add/drop multiplexing systems

Optical communications – Multiplex – Wavelength division or frequency division

Reexamination Certificate

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Details

C398S079000, C398S083000, C398S087000, C359S566000, C359S573000, C359S569000, C359S015000, C385S037000

Reexamination Certificate

active

10717387

ABSTRACT:
The present invention overcomes problems associated with switch isolation, noise and crosstalk suppression, insertion loss, spurious reflections, wavelength tolerance, and compactness that are present in varying degrees in other add/drop systems. The present invention includes devices or components that include, but are not limited to high efficiency switchable gratings.

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U.S. Appl. No. 10/700,828 filed Nov. 4, 2003. Applicant: Thomas W. Stone. Title: Wavelength Selective Switching and/or Routing System.

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