First, a simulation without any nonlinear material runs in order to find the location of the resonance peaks for this device. The model is based on the design from reference, which is a metal-dielectric-metal plasmonic gap waveguide that is coupled to a plasmonic racetrack cavity filled with a nonlinear Kerr medium. We will use a 2D FDTD simulation for this example (this can be simulated with either MODE 2.5D FDTD Propagator or FDTD). In this example, we will study the optical bistability effect in a plasmonic racetrack resonator using a nonlinear Kerr Chi3 material model.
