Efficient insertions of surface plasmon polariton on grating couplers

Teppei Onuki, Yasuo Ohtera, Takashi Tokizaki

Research output: Contribution to journalConference articlepeer-review

Abstract

For nanoscale photonic devices, localized and enhanced optical field as surface plasmon polariton (SPP) is applicable. In conventional devices applying SPP, prism coupler is used for generating SPP on metallic surface. Freely propagating light can be converted to SPP by prism coupler efficiently by matching the phase and the field distribution between light and SPP. However, prism coupler has inferiorities as bulky and uncontrollable SPP manipulations. In this paper, we propose the grating coupler for compact and flexible SPP coupler. The grating coupler is consisted with periodic dielectric structures with 300nm-thickness on flat metallic surface. This can be installed at any position, and the directivity can be controlled by the waveform. On the prating coupler with the pitch of 1500nm and the duty ratio of 0.5, the incident beam with the wavelength of 780nm, p-polarization and the incident angle of 45

Original languageEnglish
Article number592717
Pages (from-to)1-8
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5927
DOIs
Publication statusPublished - 2005 Dec 1
EventPlasmonics: Metallic Nanostructures and Their Optical Properties III - San Diego, CA, United States
Duration: 2005 Jul 312005 Aug 3

Keywords

  • Attenuated total reflection
  • Grating coupler
  • Metal waveguide
  • Near field optics
  • Optical circuit
  • Surface plasmon polariton
  • Surface plasmon resonant spectroscopy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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