Analysis of Plasmonic Waveguides and Gratings Using Implicit Finite-Difference Methods
Figure 1
Configurations of plasmonic gratings. (a) grating 1: formed by alternately stacking two kinds of MIM waveguides, (b) grating 2: formed by periodic changes in the dielectric insulator materials of an MIM waveguide, and (c) grating 3: formed by a periodic variation of the air core width in an MIM waveguide.
