Skip to main content
Figure 1 | Nano Convergence

Figure 1

From: Design of plasmonic cavities

Figure 1

3D confinement of SPPs in a deep subwavelength plasmonic cavity. (a) Schematic diagram of the plasmonic cavity. dNW1, dNW2, and L represent the nanowire diameter of the cavity region, the diameter of the high-index core, and the cavity length, respectively. (b) Calculated dispersion curves of the fundamental transverse SPP modes in the square cross-sectional, infinitely long waveguide with high-index-core/low-index-shell/metal-shell structure. Refractive indices are 2.6 and 1.5 for the high-index core and the low-index shell, respectively. Silver is used as the metal shell. Inset: dNW1 is fixed to 50 nm, and dNW2, and dSiO2 are the thicknesses of the high-index core, and the low-index shell, respectively. Adapted from [2].

Back to article page