Integrated Metal-Insulator-Metal Plasmonic Nano Resonator: an Analytical Approach

A novel structure is proposed as an inline resonator. The resonator has low loss, compact size and good sensing characteristics. A simple analytical form to the plasmonic waveguide discontinuity, fllter resonance response and cascaded fllters behavior is proposed. The model is extracted from the waveguide physical parameters and provides a physical insight into the structure of the fllter. This model is simple, accurate, and shows a good agreement with FDTD simulations. The ability of the model to provide a good methodology to obtain high quality fllters using cascaded inline flltering is verifled using FDTD. The proposed nanofllter can be used in various plasmonic applications such as sensing, biomedical diagnostics and on-chip interconnects. Using cascaded fllters, a higher quality fllter is achieved.