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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 30, Iss. 16 — Aug. 15, 2012
  • pp: 2733–2740

Guided Plasmon Modes of Elliptical Cross Section Silver Nanoridges

Zeyu Pan, Junpeng Guo, Richard Soref, and Walter Buchwald

Journal of Lightwave Technology, Vol. 30, Issue 16, pp. 2733-2740 (2012)

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Propagating two-dimensional plasmon polariton modes guided by elliptical cross section silver nanoridges are investigated in this paper. Mode field profiles, dispersion curves, propagation distances, and figure-of-merits of the plasmon modes are calculated for various elliptical cross section silver nanoridges. It is found that the elliptical cross section metal nanoridge, if designed properly, can support a tightly confined plasmon mode with a longer propagation distance and a higher figure-of-merit than the flat-top nanoridge waveguide of the same width. The optimal nanoridge waveguide is obtained when the elliptical waveguide cross section becomes a semicircular cross section. When the curvature of the elliptical nanoridge is large, the nanoridge plasmon mode approaches the wedge plasmon mode.

© 2012 IEEE

Zeyu Pan, Junpeng Guo, Richard Soref, and Walter Buchwald, "Guided Plasmon Modes of Elliptical Cross Section Silver Nanoridges," J. Lightwave Technol. 30, 2733-2740 (2012)

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