Bound electromagnetic surface waves can be excited by free-space waves on a corrugated conduction surface. These electromagnetic surface waves, called surface plasmon polaritons (SPPs), are coupled to a plasma of free charges, which travel together with the wave. We investigated the effect of separating metal corrugations from the smooth metal ground plane with a thin dielectric layer and show that SPPs can be excited via displacement currents. However, the SPP excitation resonances broaden and disappear as the dielectric thickness approaches 1% of the wavelength.
Bachelor of Science (B.S.)
College of Sciences
Orlando (Main) Campus
Brescia, Jonathan R., "Grating Coupler for Surface Waves Based on Electrical Displacement Currents" (2019). Honors Undergraduate Theses. 457.