Optical cross-connector containing multi-stage Clos network in which a single-stage matrix comprises one stage of the Clos network
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United States of America Patent
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Aug 31, 2010
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N/A
app pub date -
Mar 18, 2003
filing date -
Mar 23, 2002
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Abstract
A WDM optical cross-connect has input and output channels for through traffic. A first group of matrices connects the input channels to the output channels. Each input channel is connected to an input of a matrix of the first group and each output channel is connected to an output of the matrix. Input/output channels are provided for adding/dropping traffic. Each add/drop channel is connected to an input/output of a second group of matrices. The outputs/inputs of the second group of matrices are connected to inputs of a third group of matrices or outputs of a fourth group of matrices and the outputs/inputs of the third/fourth group of matrices are connected to inputs/outputs of the first group of matrices such that the matrices of the second, third and first groups of the first, fourth and second groups each form a Clos network.
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