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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 9 — May. 1, 2006
  • pp: 4107–4114

Adiabatic bends in surface plasmon polariton band gap structures

Ilya P. Radko, Thomas Søndergaard, and Sergey I. Bozhevolnyi  »View Author Affiliations

Optics Express, Vol. 14, Issue 9, pp. 4107-4114 (2006)

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Propagation and interaction of surface plasmon polaritons (SPPs) excited in the wavelength range 700–860 nm with periodic triangular arrays of gold bumps placed on gold film surfaces are investigated using a collection near-field microscope. We observe the inhibition of SPP propagation into the arrays within a certain wavelength range, i.e., the band gap (BG) effect. We demonstrate also the SPP propagation along a 30° bent channel obtained by an adiabatic rotation of the periodic array of scatterers. Numerical simulations using the Lippmann-Schwinger integral equation method are presented and found in reasonable agreement with the experimental results.

© 2006 Optical Society of America

OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(230.7380) Optical devices : Waveguides, channeled
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optics at Surfaces

Original Manuscript: March 13, 2006
Revised Manuscript: April 21, 2006
Manuscript Accepted: April 23, 2006
Published: May 1, 2006

Ilya P. Radko, Thomas Søndergaard, and Sergey I. Bozhevolnyi, "Adiabatic bends in surface plasmon polariton band gap structures," Opt. Express 14, 4107-4114 (2006)

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