Flexibly designed spoof surface plasmon waveguide array for topological zero-mode realization
Flexibly designed spoof surface plasmon waveguide array for topological zero-mode realization
复制标题
灵活设计的欺骗表面等离子体波导阵列，实现拓扑零模式
DOI：
10.1364/oe.26.031636
复制
发表时间：
2018-11-26
期刊：
影响因子：
3.8
通讯作者：
Pan, Yiming
中科院分区：
文献类型：
--
作者：
Cheng, Qingqing;Chen, Tao;Pan, Yiming
我们提出了一个灵活设计的光子系统的基础上，波纹金属“H-酒吧”波导，支持欺骗表面等离子体激元（SPP）在微波频率。提出了五种设计，以展示根据不同的高度，周期，芯宽度，旋转，和在波导的“H-杆”单元上的移位的灵活性。为了研究耦合效应，给出了周期和高度结构的两种混合设计之间的传播常数。接下来，我们构建了一个耦合波导阵列，遵循苏-施里弗-希格（SSH）模型。该模型由混合设计构造，每个波导具有相同的传播常数，除了它具有二聚间距。在二聚体阵列中观察到了拓扑零模的传播特性。我们提出的伪SPP波导阵列具有很大的灵活性，可以作为一个强大的实验平台，特别是在光子模拟的量子或拓扑现象所描述的薛定谔方程在凝聚态物质。
We propose a flexibly designed photonic system based on ultrathin corrugated metallic "H-bar" waveguide that supports spoof surface plasmon polariton (SPP) at microwave frequencies. Five designs were presented, in order to demonstrate flexibility according to varying height, period, core width, rotation, and shifting on the "H-bar" unit of the waveguide. The propagation constant between two hybrid designs of period and height structure was then shown in order to study the coupling effect. Next, we constructed a coupled waveguide array that followed the Su-Schrieffer-Heeger (SSH) model. This model was constructed by a hybrid design with the identical propagation constant of each waveguide, except it had dimerized spacing. The propagation feature of topological zero mode was then observed as theoretically expected in the dimerized array. Our proposed spoof SPP waveguide array has great flexibility to be used as a powerful experiment platform, particularly in photonic simulation of the quantum or topological phenomena described by Schrödinger equation in condensed matters.