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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1474

Title: Fast convergence and higher-order mode calculation of optical waveguides: perturbation method with finite difference algorithm
Authors: Chaudhuri, Partha Roy
Ghatak, A K
Pal, B P
Lu, C
Keywords: Perturbation correction
Finite difference
Optical waveguide
Mode calculation
Issue Date: 2005
Citation: Optics & Laser Technology, 37(1), 61-67
Abstract: We present an efficient algorithm for determining mode eigenvalues as well as field distributions of optical waveguides with two-dimensional transverse refractive index profile. The algorithm is devised with the analytical perturbation correction method combined with the finite difference approximation of Helmoltz's equation. The technique is simple and does not involve solving any eigenvalue equation or matrix formalism. The algorithm reduces abruptly the computation time required for the field convergence to mode, and can calculate any higher-order modes without the need of any pre-conditioning the field w.r.t. waveguide geometry, or calculation of previous order modes and/orthogonalization. The analysis can yield precisely both scalar and polarized modes. By applying it to waveguide problems whose solutions are otherwise known, the efficacy of the method has been established.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1474
Appears in Collections:Physics

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