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In this paper, we discussed a slab wave-guide of five layers, The core is a left-handed material, but the claddings are right-handed materials. A dispersion equation of TE modes is obtained by using Maxwell’s equations, and some new dispersion characteristics are obtained based on the equation.
The use of the Rudolph-Neumann approximation at later stages of the derivation yields a waveguide dispersion formula much more accurate than previously published results. Material dispersion for an arbitrary dopant content is estimated by interpolating derivatives of the Sellmeier equation. Overall dispersion is thus predicted on an analytical basis.
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