Analysis of CPM and FWM phenomena for various signaling formats in 16 channel DWDM

CPM and FWM are significant nonlinear optical effects in DWDM systems. CPM leads to spectral broadening which may cause severe pulse distortion. While FWM is a nonlinear interaction that can occur between several channels of different wavelengths. FWM may result in significant crosstalk among the channels in DWDM systems. Understanding fiber nonlinearities is crucial in order to optimize system performance. The effects of CPM and FWM in conjunction with various signaling formats in 16 channel systems are evaluated.