Exact calculation of the nonlinear characteristics of 2D isotropic and anisotropic waveguides

Abstract

We use our vector Maxwell’s nonlinear eigenmode solver to study the stationary solutions in 2D cross-section plasmonic slot waveguides with isotropic Kerr nonlinear codes and anisotropic Kerr nonlinear cores. First, for the isotropic case, we demonstrate that, even in the low-power regime, 1D studies may not provide accurate and meaningful results compared to 2D ones. Second, we study, including at high powers, the link between the nonlinear parameter ${\gamma }_{nl}$ and the change of the nonlinear propagation constant $\mathrm{\Delta }\beta$. Third, we demonstrate that our approach is also valid for anisotropic waveguides, and we show how to improve by, a factor of 2, the figure of merit of nonlinear plasmonic slot waveguides using realistic materials.

© 2018 Optical Society of America

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