Fault isolation technique for optical networks
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United States of America Patent
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Jul 18, 2006
Grant Date -
Feb 27, 2003
app pub date -
Aug 27, 2001
filing date -
Aug 27, 2001
priority date (Note) -
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Abstract
A method is provided for isolating faults in an optical network having a plurality of partial regenerators. The method includes: transmitting an optical signal through the optical network; determining an error rate for the optical signal at an egress point of the optical network; sequentially introducing a dither control signal into the optical signal at each of the plurality of partial regenerators; and monitoring the error rate for the optical signal at the egress point of the optical network; thereby isolating where a fault occurs in the optical network.
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