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Improved wide-angle finite-difference beam propagation method for the analysis of nonlinear optical waveguides

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3 Author(s)
R. S. Flamino ; Departamento de Engenharia Eletrica, Sao Paulo Univ., Brazil ; A. C. Cesar ; B. -H. V. Borges

An improved wide-angle finite-difference beam propagation method (WA-FD-BPM) formulated in terms of complex Pade approximants is proposed to investigate nonlinear optical waveguides. The formalism utilizes the Crank-Nicholson scheme. An adaptive update of the reference index and an iterative algorithm in every propagation step are utilized to accelerate convergence. Stability problems relative to high-order approximants are also addressed in this work

Published in:

IEEE Transactions on Magnetics  (Volume:38 ,  Issue: 2 )