Comparison of the dispersion allocated WDM (10 Gbit/s×10 channels) optical soliton and NRZ systems using a Q map

摘要

We compared the transmission quality of wavelength division multiplexing (WDM) soliton and WDM nonreturn-to-zero (NRZ) systems numerically by using a Q contour map for WDM. The bit rate was set at 100 Gbit/s (10 Gbit/s×10 channels). We studied the effect of dispersion allocation in detail and found that there is a significant improvement in the transmission quality of WDM soliton systems when a large dispersion allocation is used. Such an improvement was not obtained in the WDM NRZ system. We show that a dispersion allocated WDM soliton system using 1.3 µm standard fiber has greater potential for increasing the transmission distance than a WDM NRZ system. This result confirms the experimental result reported by Le Guen et al.