An Experimental Study of XPM and SPM Upon a Long-Haul RZ-DSPK Transmission System With a Block-Type Dispersion Map

We report on an experimental study that focus on the cross phase modulation (XPM) and self-phase modulation (SPM) effects upon the transmission performance of 10 Gb/s-based long-haul return-to-zero differential phase-shift keying system, using the block-type dispersion map. Experimental results show that for the channel at the system zero dispersion wavelength SPM causes a larger degradation as compared to channels at other wavelengths. Whereas it was observed that the XPM impairment does not vary significantly for channels at or away from the system zero dispersion wavelength.