Plasmon slot waveguides: Towards chip-scale propagation with subwavelength-scale localization

We present a numerical analysis of surface plasmon waveguides exhibiting both long-range propagation and spatial confinement of light with lateral dimensions of less than 10% of the free-space wavelength. Attention is given to characterizing the dispersion relations, wavelength-dependent propagation, and energy density decay in two-dimensional $\mathrm{Ag}∕\mathrm{Si}{\mathrm{O}}_{2}∕\mathrm{Ag}$ structures with waveguide thicknesses ranging from $12\phantom{\rule{0.3em}{0ex}}\mathrm{nm}\phantom{\rule{0.3em}{0ex}}\text{to}\phantom{\rule{0.3em}{0ex}}250\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$. As in conventional planar insulator-metal-insulator (IMI) surface plasmon waveguides, analytic dispersion results…

• NS
  National Science Foundation
• UD
  U.S. Department of Defense
• CI
  California Institute of Technology
• NO
  Nederlandse Organisatie voor Wetenschappelijk Onderzoek

  Award: AMOLF
• MU
  Multidisciplinary University Research Initiative
• AR
  Army Research Office