A double-strip plasmonic waveguide coupled to an electrically driven nanowire LED

You Shin No, Jae Hyuck Choi, Ho Seok Ee, Min Soo Hwang, Kwang Yong Jeong, Eun Khwang Lee, Min Kyo Seo, Soon Hong Kwon, Hong Gyu Park

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


We demonstrate the efficient integration of an electrically driven nanowire (NW) light source with a double-strip plasmonic waveguide. A top-down-fabricated GaAs NW light-emitting diode (LED) is placed between two straight gold strip waveguides with the gap distance decreasing to 30 nm at the end of the waveguide and operated by current injection through the p-contact electrode acting as a plasmonic waveguide. Measurements of polarization-resolved images and spectra show that the light emission from the NW LED was coupled to a plasmonic waveguide mode, propagated through the waveguide, and was focused onto a subwavelength-sized spot of surface plasmon polaritons at the tapered end of the waveguide. Numerical simulation agreed well with these experimental results, confirming that a symmetric plasmonic waveguide mode was excited on the top surface of the waveguide. Our demonstration of a plasmonic waveguide coupled to an electrically driven NW LED represents important progress toward further miniaturization and practical implementation of ultracompact photonic integrated circuits.

Original languageEnglish
Pages (from-to)772-776
Number of pages5
JournalNano Letters
Issue number2
Publication statusPublished - 2013 Feb 13


  • FDTD simulations
  • Surface plasmon polaritons
  • light-emitting diodes
  • photonic integrated circuits
  • plasmonic waveguides
  • semiconductor nanowires

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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