The Transmission Characteristic of Metal–Dielectric–Metal Slot Waveguide-Based Nanodisk Cavity With Gain Medium
We theoretically investigate the propagation of surface plasmon polaritons (SPPs) for the metal-dielectric-metal slot waveguide coupled to a disk cavity filled with gain material.The transmission and reflection characteristics Hangers of the resonant structure are numerically analyzed based on coupled-mode theory.The influence of structure paramete