Direct coupling of plasmonic and photonic nanowires for hybrid nanophotonic components and circuits

Nano Lett. 2009 Dec;9(12):4515-9. doi: 10.1021/nl902860d.

Abstract

We report direct coupling of plasmonic and photonic nanowires using ultracompact near-field interaction. Photon-plasmon coupling efficiency up to 80% with coupling length down to the 200 nm level is achieved between individual Ag and ZnO nanowires. Hybrid nanophotonic components, including polarization splitters, Mach-Zehnder interferometers, and microring cavities, are fabricated out of coupled Ag and ZnO nanowires. These components offer relatively low loss with subwavelength confinement; a hybrid nanowire microcavity exhibits a Q-factor of 520.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Equipment Design
  • Equipment Failure Analysis
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Nanotechnology / instrumentation*
  • Optical Devices*
  • Particle Size
  • Refractometry / instrumentation*
  • Silver / chemistry*
  • Surface Plasmon Resonance / instrumentation*
  • Systems Integration
  • Zinc Oxide / chemistry*

Substances

  • Silver
  • Zinc Oxide