channel nonlinearity compensation is demonstrated, with increase of optimum lauchn power by 1 bB in each case and corresponding increase in maximum reach to 11635 km and 8100 km, respectively.
We compare the nonlinear limits of 42.7 and 85.4 Gb/s PDM-QPSK transmission. Intra-channel nonlinearity compensation is demonstrated, with increase of optimum lauchn power by 1 bB in each case and corresponding increase in maximum reach to 11635 km and 8100 km, respectively.