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Ultrahigh speed all-optical AND logic gate using integrated silicon-based MZI device

In this paper, we present a device with a silicon-on-insulator (SOI) based symmetrical Mach–Zehnder interferometer (MZI) structure to perform the ultrahigh speed all-optical AND logic gate function. Simulation results show that, while the operation speed is at a bit rate of 200 Gbit s−1, the output parameters including extinction ratio and eye-opening ratio for outcome AND logic gate signal can, respectively, reach as high as ∼12.8 dB, and ∼0.94 in the case of a 5 mm long SOI waveguide by means of judiciously adjusting the initial conditions, such as incident signal and probe continuous-wave (CW) powers.