Degiron Aloyse, Smith David
Opt Express. 2006 Feb 20;14(4):1611-25. doi: 10.1364/oe.14.001611.
We present simulations of plasmonic transmission lines consisting of planar metal strips embedded in isotropic dielectric media, with a particular emphasis on the long-range surface plasmon polariton (SPP) modes that can be supported in such structures. Our computational method is based on analyzing the eigenfrequencies corresponding to the wave equation subject to a mixture of periodic, electric and magnetic boundary conditions. We demonstrate the accuracy of our approach through comparisons with previously reported simulations based on the semi-analytical method-of-lines. We apply our method to study a variety of aspects of long-range SPPs, including tradeoffs between mode confinement and propagation distance, the modeling of bent waveguides and the effect of disorder and periodicity on the long-ranging modes.
我们展示了由嵌入各向同性电介质中的平面金属条组成的等离子体传输线的模拟，特别强调了在此类结构中可以支持的长程表面等离激元极化激元（SPP）模式。我们的计算方法基于分析对应于波动方程的本征频率，该波动方程受周期性、电和磁边界条件的混合约束。我们通过与先前基于半解析线方法报告的模拟进行比较，证明了我们方法的准确性。我们应用我们的方法来研究长程SPP的各个方面，包括模式限制和传播距离之间的权衡、弯曲波导的建模以及无序和周期性对长程模式的影响。
