Optical switching system with a colorless, directionless, and contentionless ROADM connected to unamplified drop channels
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United States of America Patent
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Aug 22, 2017
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N/A
app pub date -
Sep 18, 2015
filing date -
Sep 19, 2014
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Abstract
Components of an optical communications network are described at a node of the network providing switching from one or more degrees of received optical signal routed to a plurality of receivers. The switch at the node generally includes a passive reconfigurable optical add drop multiplexer (ROADM) having drop or output ports that connector to optical channels leading to optical receivers without optical amplifiers between the ROADM outputs and the receivers. Configurations of the node and corresponding parameters are described that provide for use of lower cost components due to the absence of an array of optical amplifiers connected to the ROADM outputs.
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