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Abstract
TE modes of an optically linear planar waveguide on a thick nonlinear substrate are described for a model substrate refractive index or dielectric permittivity of the form ϵ= ϵ s + ϵ satu(2+u) (1+u) 2 , where u= α|E| 2 2ϵ sat , which displays saturation at high guided-wave powers, yet for which wave equation integration and power integrals are elementary. The parameter γ= ϵ sat (ϵ f–ϵ s) where ϵ f is the guiding-layer permittivity, determines the guided-wave behavior. For γ<1, little effect is seen; for γ>1, power limiting and interface guiding are observed, similar to the Kerr model except for the saturation effect.
Published Version
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