Effect of group velocity dispersion on stimulated Raman crosstalk in multichannel transmission systems

We investigate the effect of group velocity dispersion on stimulated Raman crosstalk in intensity modulated multichannel transmission systems. A theoretical model for bit-error rates (BERs) and power penalty calculation is provided, where the effects of modulation statistics and group velocity dispersion are taken into account. It has been found that walkoff effects may reduce stimulated Raman scattering (SRS) crosstalk, and can not be neglected for systems with a large number of channels.