China Telecom started from 2009 in large-scale construction of high-speed single-wave velocity 40Gbit/s rate wave subsystems. 10/40Gbit/s system than the system
the dispersion has a more stringent requirement
40Gbit/s system requirements in addition to the fixed dispersion compensation module is configured for accuracy
is also configured on the dispersion OTU adjustable module TDC
for precise adjustment of dispersion. As the TDC in the global search
it will cause the business a long time interrupted
so 40G and 10G systems business recovery system differs greatly. In this paper
the scheduling and 40G WDM OLP business impact protection are discussed.