Surface-induced nonlinearity enhancement in subwavelength rod waveguides

Andrea Marini, Robin Hartley, Andriy V Gorbach, Dmitry V Skryabin

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Abstract

We develop a perturbative theory to describe optical propagation in subwavelength rod waveguides. In this approach, we account for loss and nonlinearity in the boundary conditions. A comparison to the traditional perturbative approach used in optical fibers reveals that the surface contribution provides a significant nonlinearity enhancement in the subwavelength regime. We further compare the nonlinearity enhancement of metallic, dielectric, and semiconductor waveguides, in addition to determining the attenuation coefficient of metallic nanowires.
Original languageEnglish
Article number063839
JournalPhysical Review A: Atomic, Molecular, and Optical Physics
Volume84
Issue number6
DOIs
Publication statusPublished - 19 Dec 2011

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