Method and system for monitoring distributed raman optical transmission line
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United States of America Patent
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Issued Date -
Feb 19, 2004
app pub date -
Aug 14, 2003
filing date -
Aug 15, 2002
priority date (Note) -
Abandoned
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Abstract
A system for monitoring a distributed Raman optical transmission line to optically amplify a signal light having a signal wavelength by pumping with a Raman pumping light having a Raman pumping wavelength comprises an optical demultiplexer to demultiplex an output light from the distributed Raman optical transmission line into the signal wavelength component and the Raman pumping wavelength, an optical power measuring unit to measure the optical powers of the signal wavelength component and the Raman wavelength component demultiplexed by the optical demultiplexer, and a judging unit to judge whether a fault exists in the Raman amplification in the distributed Raman optical transmission line and the cause of the fault.
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