The authors analyse the effect of cross-phase modulation (XPM) on wave
length division multiplexing (WDM) transmissions by experiments and nu
merical simulations, and provide the XPM limitation in a normalised an
d closed form formula. They also investigate the effect of XPM on disp
ersion compensated It is shown that the location of dispersion transmi
ssions. compensators and the amount of compensation determined by cons
idering the XPM effect.