Simulation of soliton all-optical logic XOR gate with semiconductor optical amplifier

In this new study, a soliton all-optical logic XOR gate is numerically simulated and investigated. This Boolean function is realized by using a semiconductor optical amplifier (SOA)-assisted Mach–Zehnder interferometer. The dependence of the output quality factor (Q-factor) on the soliton characteristics and SOA’s parameters has been examined and assessed. The obtained results confirm that the soliton XOR gate implemented with the proposed scheme is capable of operating at a data rate of 80 Gb/s with logical correctness and high output Q-factor.