表面等离子波导及应用

Surface plasmon waveguide and its applications

本文在介绍表面等离子波导基本理论的基础上,主要对表面等离子波导的若干应用进行综述,包括基于表面等离子波导实现的光学和微波频段的慢波效应、类电磁感应透明现象、可调滤波器,以及通过对电磁波绕射而实现的隐身效应等。最后指出该领域存在的问题与挑战,并对今后的发展趋势进行了展望。分析认为,通过引入增益介质、采用超导材料等方法降低表面等离子波导材料的损耗、减少工艺制作的难度是今后亟待解决的问题。

On the basis of Surface Plasmon Polariton（ SPP） waveguide dispersion relation being derived sys-temically, the applications of SPP waveguide are summarized in this paper.The slow wave effect in SPP waveguide, the EIT（ electromagnetically induced transparency）-like phenomenon, the tunable SPP waveguide filter at optical and microwave frequencies, the SPP waves cloaking through diffraction are mainly introduced. Problems and challenges in this field are pointed out finally, and the future developing trend is prospected. Analysis indicates that reducing the loss of the surface plasmon waveguide materials and the difficulty of the production process by introducing gain mediums and superconducting materials are the problem to be solved urgently in the future.