Theoretical and experimental investigation on all-optical AND gate with cascaded single-port-coupled SOAs

Novel all-optical logic AND gate based on cross-gain modulation in cascaded semiconductor optical amplifier (SOA) is presented in this paper. Theoretical model for this novel configuration is established, all-optical logic AND operation function at 10Gb/s is numerical simulated and experimental demonstrated. Output logic operation results in different operation conditions are also analyzed. Results show that single-port-coupled SOA is helpful for better output performance and enough output power of the first stage wavelength converter is critical for logic AND operation results, theoretical simulation results are coincidence with experimental results.