Application of Differential Global Surface Impedance (DGSI) Model in the Analysis of Plasmonic circuits

Efficient differential global surface impedance model has been applied to the analysis of plasmonic circuits. This rigorous model relates the tangential electric field and equivalent surface electric current on the boundary of the object. This method not only enables one to use surface discretization instead of volumetric meshing, but also eliminates the need for equivalent surface magnetic current. This will result in a great reduction in computation time and memory resources. Plasmonic waveguide with different thicknesses have been analyzed and the results are compared with the results of a commercial software as well as global surface impedance (GSI) model introduced in the literature.