Redundancy protection for reconfigurable optical add/drop multiplexing (ROADM) branching unit
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United States of America Patent
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Jan 9, 2018
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app pub date -
Sep 28, 2016
filing date -
Oct 27, 2015
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Abstract
Aspects of the present disclosure describe systems, structures and methods providing fully reconfigurable optical add-drop multiplexing (ROADM) that provide redundancy protection against any two (2) simultaneous wavelength selective switch (WSS) failures with only four 2×1 WSS structures for both Eastbound and Westbound traffic, while not requiring bidirectional operation of the WSS structures.
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