All-optical RZ-OOK to RZ-BPSK conversion with multicasting based on XPM in highly nonlinear fiber

We present a detailed investigation of all-optical RZ-OOK to RZ-BPSK modulation format conversion at 10 Gb/s using cross-phase modulation in a length of highly nonlinear fiber. In particular, we examine the impact of the input RZ-OOK signal characteristics, such as duty cycle, average (peak) power, optical signal to noise ratio, and degradation from residual dispersion and differential group delay on the BER performance of the converted RZ-BPSK signal. We also present results on RZ-OOK to RZ-BPSK modulation format conversion with wavelength multicasting.