Optical network and control method therefor
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United States of America Patent
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May 7, 2013
Grant Date -
Aug 4, 2011
app pub date -
Jan 25, 2011
filing date -
Jan 29, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An attenuation amount corresponding to each wavelength at OADM node is optimized according to a calculation result in a network management system (NMS), so that an optical signal level diagram according to traffic volume variations is set, the level diagram allows each of optical signal quality indexes at terminal nodes for all wavelengths to be maintained at a required threshold value or more, and allows an optical signal quality index of a specific wavelength to be improved. Then, an FEC circuit in an optical receiver corresponding to the specific wavelength is turned OFF or the error correction ability is lowered, whereby power consumption of an overall optical network is efficiently reduced.
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