Dipolar emission in trench metal-insulator-metal waveguides for short-scale plasmonic communications: numerical optimization

Ryan McCarron*, Wayne Dickson, Alexey V. Krasavin, Gregory A. Wurtz, Anatoly V. Zayats

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Here we consider the numerical optimization of active surface plasmon polariton (SPP) trench waveguides suited for integration with luminescent polymers for use as highly localized SPP source devices in short-scale communication integrated circuits. The numerical analysis of the SPP modes within trench waveguide systems provides detailed information on the mode field components, effective indices, propagation lengths and mode areas. Such trench waveguide systems offer extremely high confinement with propagation on length scales appropriate to local interconnects, along with high efficiency coupling of dipolar emitters to waveguided plasmonic modes which can be close to 80%. The large Purcell factor exhibited in these structures will further lead to faster modulation capabilities along with an increased quantum yield beneficial for the proposed plasmon-emitting diode, a plasmonic analog of the light-emitting diode. The confinement of studied guided modes is on the order of 50 nm and the delay over the shorter 5 μm length scales will be on the order of 0.1 ps for the slowest propagating modes of the system, and significantly less for the faster modes.

Original languageEnglish
Article number114006
Number of pages14
JournalJournal of Optics (United Kingdom)
Volume16
Issue number11
DOIs
Publication statusPublished - 03 Nov 2014

Keywords

  • electroluminescent polymer
  • surface plasmon polaritons
  • surface plasmon source
  • surface plasmon waveguides

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

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