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Higher-order variational analysis of finitely clad optical waveguides

V. A. POPESCU1,*

Affiliation

  1. Department of Physics 1, University "Politehnica "of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania

Abstract

A higher-order variational method is applied to determine the normalized propagation constant in a finitely clad slab waveguide. We obtain closer results to the exact values in comparison with the first-order perturbation of the infinite clad waveguide, first–order perturbation of the coreless structure and the two–sided perturbation methods. The accuracy of the method depends on how many trial eigenfunctions are used, on the near and far cut-off regimes, on the ratio a/λ and also on the refractive index differences..

Keywords

Waveguides, Quantum mechanics, Higher-order variational analysis.

Submitted at: Aug. 26, 2007
Accepted at: Oct. 7, 2008

Citation

V. A. POPESCU, Higher-order variational analysis of finitely clad optical waveguides, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 10, pp. 2532-2538 (2008)