Pulse Controlled All-Optical Logic Gate Based on Nonlinear Ring Resonator Realizing All Fundamental Logic Operations

We proposed an all-optical logic gate based on a plasmonic ring resonator filled with optical Kerr material, and the simple structure has the ability to realize all fundamental logic operations, NAND, NOR, and NOT. Different logic operations are controlled by optical pulse with different peak intensities. A theoretical model was developed to analyze the nonlinear transmission efficiencies of the ring resonator under different Boolean inputs. Finite-difference-time-domain simulation results agree well with the model and verify the feasibility of different logic operations. The proposed structure has the potentials for the basic unit in photonic circuits.