Photonic bandgap structures for long-range surface plasmon polaritons

Sergey I. Bozhevolnyi, Alexandra Boltasseva, Thomas Søndergaard, T. Nikolajsen, Kristjan Leosson

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Propagation of long-range surface plasmon polaritons (LR-SPPs) along periodically thickness-modulated metal stripes embedded in dielectric is studied both theoretically and experimentally for light wavelengths in the telecom range. We demonstrate that symmetric (with respect to the film surface) nm-size thickness variations result in the pronounced band gap effect, and obtain very good agreement between measured and simulated (transmission and reflection) spectra. This effect is exploited to realize a compact wavelength add-drop filter with the bandwidth of -20 nm centered at 1550 nm. The possibilities of achieving a full bandgap (in the surface plane) for LR-SPPs are also discussed.
Original languageEnglish
JournalOptics Communications
Volume250
Issue number4-6
Pages (from-to)328-333
ISSN0030-4018
Publication statusPublished - 2005

Keywords

  • wave optics
  • surface plasmon polaritons

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