Analysis of a bus waveguide with linear ring resonator array coupled plasmonic structure

We use coupled mode theory (CMT) to analyze a metal-insulator-metal (MIM) plasmonic structure that is composed of a bus waveguide coupled to a linear ring resonators array. The transmission is calculated and the relationship of the radius of the rings for the asymmetric array is tracked out. The finite-difference time-domain (FDTD) simulation results with the same structural parameters are obtained for proving