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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Modal Analysis for a Waveguide of Nanorods Using the Field Computation for a Chain of Finite Length
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Modal Analysis for a Waveguide of Nanorods Using the Field Computation for a Chain of Finite Length

机译：使用有限长度链的场计算对纳米棒波导进行模态分析

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摘要

The propagation of light along an infinite 2D chain of silver nanorods is analyzed and the dispersion for this waveguide is computed using field computation for a finite chain of nanorods. In this work, generalized multipole technique is used for the analysis. This method calculates the imaginary and real parts of the propagation constant by exciting the chain in one end and observing propagation of modes along the chain far enough from the excitation. It is shown that a short chain of finite length is sufficient for the calculation of the phase constant while the attenuation constant requires a longer chain. Field distribution is depicted for even and odd modes and it is shown that in the simulated frequency range only two modes can be excited and can propagate along the waveguide.
机译：分析了光沿着银纳米棒的无限二维链的传播，并使用了有限纳米棒的场计算来计算了该波导的色散。在这项工作中，使用广义多极技术进行分析。该方法通过在一端激励链并观察沿激励模式足够远的沿链的模式传播，来计算传播常数的虚部和实部。结果表明，有限长度的短链足以计算相位常数，而衰减常数则需要更长的链。描绘了偶数和奇数模式的场分布，结果表明，在模拟频率范围内，只有两种模式可以被激发，并且可以沿着波导传播。

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