| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently reduce power consumption of the whole of an optical network by optimizing a level diagram of WDM light in response to variation of a traffic volume in the optical network. <P>SOLUTION: An attenuation amount corresponding to each wavelength at an OADM node is optimized according to a calculation processing result in a network management system (NMS), so that an optical signal level diagram according to traffic volume variations is set, which 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 error correction capability is lowered. <P>COPYRIGHT: (C)2011,JPO&INPIT |
