论文标题
表面等离子体极化波与光学无介质的无散射路由
Scattering-free routing of surface plasmon polariton waves with optical null medium
论文作者
论文摘要
最近，引导电磁表面波不牺牲具有任意形状颠簸的路径的散射损失，由于其在现代光子学和等离子体设备中的优势，引起了很大的兴趣。在这项研究中，基于转化光学（TO）方法，提出了一种可行的方法，用于控制具有任意曲率的金属式接口处的表面等离子体Plariton（SPP）。获得的材料变得均匀，并且独立于凹凸的几何形状。也就是说，需要一种恒定的材料来路由SPP波，而不会将能量散射到远场区域，从而克服了以前的作品中遇到的瓶颈。进行了几个数值模拟，以说明在金属/介电接口处控制伪造的斗篷的能力。此处介绍的独特设计方法可能为纳米镜和光子电路的缩放打开了新的视野。
Recently, guiding electromagnetic surface waves without sacrificing scattering losses through paths that have arbitrary shape bumps has gained a lot of interest due to its wealth of advantages in modern photonics and plasmonics devices. In this study, based on transformation optics (TO) methodology, a feasible approach to control the flow of surface plasmon plariton (SPPs) at metal-dielectric interfaces with arbitrary curvature is proposed. The obtained material becomes homogeneous and independent of the bump's geometry. That is, one constant material is required to route SPP waves without scattering the energy into the far-field region, which overcome the bottlenecks encountered in the previous works. Several numerical simulations are carried out to illustrate the capability of the propounded cloak to control the SPP flows at metal/dielectric interfaces. The unique designing approach introduced here may open a new horizon to nano-optics and downscaling of photonic circuits.
