System with a distributed optical performance monitor for use in optical networks
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United States of America Patent
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app pub date -
Oct 11, 2006
filing date -
Aug 15, 2003
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Abandoned
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Abstract
An OADM structure is disclosed with distributed optical performance monitor cells that utilize drop channels for OSNR measurement. The OSNR measurement is computed by calculating the electric noise spectrum density from the Fast Fourier Transform of a sample spectrum and from a frequency range based on traffic protocol and transmission rate, as well as considering the average optical power of the sample points.
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