Phys. Rev. A 75, 063816 (2007) [9 pages]Curvature-induced radiation of surface plasmon polaritons propagating around bendsReceived 5 March 2007; published 15 June 2007 We present a theoretical study of the curvature-induced radiation of surface plasmon polaritons 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 surface plasmon polaritons propagating around bends with varying radii as well as sign of curvature. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.063816
DOI:
10.1103/PhysRevA.75.063816
PACS:
42.25.Bs, 78.67.−n, 42.79.Gn
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