Soluble saturable refractive-index nonlinearity model

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...

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Bibliographic Details
Published in:Optics communications 1988-12, Vol.69 (2), p.156-160
Main Authors: Wood, Van E., Evans, Eric D., Kenan, Richard P.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
Physics
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Summary: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 γ1, power limiting and interface guiding are observed, similar to the Kerr model except for the saturation effect.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(88)90302-1