All-Optical NOR Logic Gate Based on MIM Plasmonic Waveguide Structure with Nano-Rectangular Resonators

In this paper, an all-optical NOR logic gate based on the metal-insulator-metal (MIM) plasmonic waveguide structure with the nano-rectangular resonators was proposed. The proposed structure consists of one straight signal input port, two straight control input ports, one straight output port, and four symmetric nano-rectangular resonators. By properly changing the “ON” or “OFF” logic states of the input control ports “ON” or “OFF”, it can be used to design all-optical NOR logic gate. The numerical results show that the proposed plasmonic waveguide structure could really function as an all-optical NOR logic gate. The performance of the proposed NOR logic gate was analyzed and simulated by the finite element method (FEM).