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arXiv · 1202.2478

Guided Plasmon Modes of Elliptical Cross Section Silver Nanoridges

Zeyu Pan·Junpeng Guo·Richard Soref·Walter Buchwald
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Abstract

Propagating two-dimensional plasmon 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 ridge modes are calculated for various elliptical cross sections. It is found that an elliptical cross section metal nanoridge, if designed properly, can support a well-confined plasmon mode with a longer propagation distance and a higher figure-of-merit than the flat-top nanoridge plasmon waveguide of the same width. The optimal ridge waveguide cross section is obtained when the elliptical ridge top has a semicircular cross section. When the curvature of the elliptical nanoridge is large, the mode approaches the tightly confined wedge plasmon mode.

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Zeyu Pan, Junpeng Guo, Richard Soref, Walter Buchwald. 2012-07-02. Guided Plasmon Modes of Elliptical Cross Section Silver Nanoridges. https://arxiv.org/abs/1202.2478

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