Abstract
We found the dispersion relations for TM-polarized nonlinear waves guided by a dielectric film of thicknessd bounded on one side by a nonlinear uniaxial medium characterized by a dielectric tensorɛ xx =ɛ y =ɛ c ,ɛ zz =ɛ c +α c |E z |2,α c >0 (self-focusing medium),E z being the electric-field component perpendicular to the surfaces. Numerical calculations are given for the power dependence of the propagation wave vector. For sufficiently larged/λ (λ: wavelength) we have found regions with multiple solutions corresponding to the same power flow. This suggests possible applications to optical devices.
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