用圆柱形LOD-FDTD方法分析金属圆盘型太赫兹表面波分离器

2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2016-07-11 DOI:10.1109/NUSOD.2016.7546995

J. Shibayama, Masato Itoh, J. Yamauchi, H. Nakano

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引用次数: 3

摘要

为了有效地分析圆柱结构中的电磁问题，提出了圆柱坐标系下的局部一维时域有限差分(FDTD)方法。利用Sherman-Morrison公式求解循环矩阵，并引入像理论处理理想电导体。作为应用，我们分析了一种金属圆盘型太赫兹表面波分配器。计算时间减少到显式FDTD方法的一半左右，同时保持相当的精度。

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Analysis of a metal disc-type terahertz surface wave splitter using the cylindrical LOD-FDTD method

To efficiently analyze the electromagnetic problems in cylindrical structures, we develop a locally one-dimensional finite-difference time-domain (FDTD) method in cylindrical coordinates. The Sherman-Morrison formula is used to solve a cyclic matrix, and the image theory is introduced to treat a perfect electric conductor. As an application, we analyze a metal disc-type terahertz surface wave splitter. The computation time is reduced to approximately half that of the explicit FDTD method, while maintaining the comparable accuracy.

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2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)

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