A Boundary Integral Method for 3-D Nonuniform Dielectric Waveguide Problems via the Windowed Green Function
A Boundary Integral Method for 3-D Nonuniform Dielectric Waveguide Problems via the Windowed Green Function
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DOI：
10.1109/tap.2023.3241009
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发表时间：
2021-10
影响因子：
5.7
通讯作者：
Emmanuel Garza;Constantine Sideris;O. Bruno
中科院分区：
文献类型：
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作者：
Emmanuel Garza;Constantine Sideris;O. Bruno
本文提出了一种有效的基于边界积分的“窗口绿色函数”（WGF）方法，用于含介质波导的三维一般电磁问题的数值求解。该方法，它概括了最近推出的2-D版本的方法，提供了一个非常有效的解决方案，这样的问题。特别是，使用辅助积分表示，所提出的方法是能够准确地模拟入射模式激励。在光滑窗口函数的基础上，沿无限波导边界的积分算子沿着被光滑截断，导致比窗口尺寸的任何负幂衰减更快的误差。
This communication proposes an efficient boundary-integral-based “windowed Green function” (WGF) methodology for the numerical solution of 3-D general electromagnetic problems containing dielectric waveguides. The approach, which generalizes a recently introduced 2-D version of the method, provides a highly effective solver for such problems. In particular, using an auxiliary integral representation, the proposed method is able to accurately model incident mode excitation. On the basis of a smooth window function, the integral operators along the infinite waveguide boundaries are smoothly truncated, resulting in errors that decay faster than any negative power of the window size.