Wavelength division multiplexing optical performance monitors
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United States of America Patent
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Jan 23, 2007
Grant Date -
Aug 14, 2003
app pub date -
Dec 10, 2002
filing date -
Dec 10, 2001
priority date (Note) -
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Abstract
The present invention is generally directed to optical signal devices that monitor the quality of an optical signal in a wavelength division multiplexing system by evaluating the information in the different wavelength channels.
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