Numerical investigation of an all-optical logic OR gate at 80Gb/s with a dual pump-probe semiconductor optical amplifier (SOA)-assisted Mach-Zehnder interferometer (MZI)

The performance of an all-optical OR gate using a dual pump-probe semiconductor optical amplifier (SOA)-assisted Mach-Zehnder interferometer (MZI) is investigated and demonstrated through numerical simulations at a data rate of 80Gb/s. The proposed scheme enables to obtain a higher quality factor and smaller pattern dependence for a more feasible choice of critical operating parameters than when using for the same purpose the SOA-delayed interferometer.