Abstract
AbstractIn this paper, a rigorous two‐dimensional full‐vectorial finite difference time domain (2D‐FVFDTD) method is developed for an efficient analysis of nonradiative dielectric waveguide (NRD guide) devices with three‐dimensional structure. A Convolutional perfectly matched layer is employed as an absorbing boundary condition. Furthermore, we have established a rigorous formulation for estimating the modal power of each and mode. We confirmed the validity of the proposed method through the analysis of NRD crossing and T‐branch guide devices. Excellent accuracy is achieved by the cross comparison of 2D‐FVFDTD results with recently developed two‐dimensional full vectorial finite element method.
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