Skip to main content
Figure 7 | Nano Convergence

Figure 7

From: Design of plasmonic cavities

Figure 7

Field confinement in the channel-waveguide plasmonic cavity. (a) Dispersion curves of the SPP modes for the waveguides of different widths, 250 nm (black) and 100 nm (red). The right inset illustrates a channel waveguide consisting of a high-index dielectric slab and an air slot with a rectangular cross-section. The left inset shows the electric field intensity profile of the SPP waveguide mode. (b) Top and (c) cross-sectional views of the electric field intensity profile of the SPP cavity mode. dc = 250 nm, Lc = 250 nm, dm = 100 nm, Lm = 500 nm, t = 200 nm, and h = 500 nm. Adapted from [8].

Back to article page