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Curvature-induced radiation of surface plasmon polaritons propagating around bends

Keisuke Hasegawa·Jens U. Noeckel·Miriam Deutsch
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Abstract

We present a theoretical study of the curvature-induced radiation of surface plasmon polaritons (SPPs) propagating around bends at metal-dielectric interfaces. We explain qualitatively how the curvature leads to distortion of the phase front, causing the fields to radiate energy away from the metal-dielectric interface. We then quantify, both analytically and numerically, radiation losses and energy transmission efficiencies of SPPs propagating around bends with varying radii- as well as sign-of-curvature.

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Keisuke Hasegawa, Jens U. Noeckel, Miriam Deutsch. 2007-03-14. Curvature-induced radiation of surface plasmon polaritons propagating around bends. https://doi.org/10.1103/physreva.75.063816

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