A novel Fourier based 3D full-vectorial beam propagation method |
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Authors: | Wangüemert-Pérez JG Molina-Fernández I Luque-Nieto MA |
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Institution: | 1. Departamento Ingeniería de Comunicaciones, Campus de Teatinos s/n, 29071, Málaga, Spain
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Abstract: | In this paper a Fourier based full-vectorial beam propagation method (BPM) with perfectly matched layer (PML) absorbing boundary conditions is presented. The method starts with the slowly varying envelope coupled wave equations, including coordinate-stretching type PMLs, which are discretised using the Galerkin method with Fourier basis functions in the transversal direction. The proposed method is then assessed in a wide variety of situations, including 2D propagation of TE and TM waves and 3D full-vectorial situations. The obtained results show that good accuracy can be obtained even for complex strongly-guiding waveguides with a small number of basis functions. |
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