Analysis of Nonlinear Propagation Characteristics of Picosecond Pulses in Semiconductor Optical Amplifiers

摘要

We have analyzed the nonlinear propagation characteristics of picosecond pulses in semiconductor optical amplifiers (SOAs) by the finite-difference beam propagation method (FD-BPM). From simulation results, it was found in the output waveform that the pulses peak positions are shifted to the leading edge. The output spectra are red-shifted and the dips are observed at the higher frequency side in the frequency spectra. We have also analyzed the wave mixing characteristics of picosecond pulses in SOAs.