Dispersion map design for XPM suppression in NRZ 10 Gbit/s pre-compensated WDM links using Standard-Fibre and 50 GHz of channel spacing

The dispersion map design for cross-phase modulation (XPM) suppression in non-return to zero 10 Gbit/s per channel wavelength division multiplexing systems using standard-fibre and channel spacing of 50 GHz is presented. It is shown that XPM degradation can be minimized using two different amounts of residual dispersion per span and that the optimum post-compensation dispersion is linearly dependent on the residual dispersion per span. Moreover, both optimum residual dispersion per span and optimum post- compensation dispersion amount are almost independent of the pre-compensation dispersion. It is also shown that the pre- compensation dispersion has a low influence on the XPM- induced degradation when the post-compensation dispersion is optimized.