Bend loss in surface plasmon polariton band-gap structures

S.I. Bozhevolnyi, V.S. Volkov, Kristjan Leosson, Alexandra Boltasseva

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Abstract

Using near-field optical microscopy, we investigate propagation of surface plasmon polaritons (SPPs) excited in the wavelength range of 720-830 nm at a corrugated gold-film surface with areas of 200-nm-wide and 45-nm-high scatterers arranged in a 410-nm-period triangular lattice containing line defects with double bends. We find that, for similar to2-mum-wide line defects and the wavelength of similar to 740 nm, the double bend losses for bend angles of 15 degrees and 30 degrees are below 2 and 10 dB, respectively. Our data indicate that the bend loss increases approximately quadratically with the bend angle. We also demonstrate splitting and combining of two SPP line-defect modes in a 20-mum-long Y junction.
Original languageEnglish
JournalApplied Physics Letters
Volume79
Issue number8
Pages (from-to)1076-1078
ISSN0003-6951
DOIs
Publication statusPublished - 2001

Bibliographical note

Copyright (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • PHOTONIC CRYSTALS
  • SCATTERING
  • DEFECT

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