期刊
OPTICS LETTERS
卷 41, 期 16, 页码 3698-3701出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.41.003698
关键词
-
类别
资金
- National Natural Science Foundation of China (NSFC) [11304038, 11574037]
- Fundamental Research Funds for the Central Universities [CQDXWL-2014-Z005]
- Research Grant Council, Hong Kong [AOE/P-02/12]
The spoof-insulator-spoof (SIS) structure can serve as a waveguide for spoof surface plasmon polaritons (spoof SPPs). If a periodic geometry modulation in the wavelength scale is introduced to the SIS waveguide, this multiscale SIS (MSIS) waveguide possesses band gaps for spoof SPPs analogous to the band gaps in a photonic crystal. Inspired by the topological interface states found in photonic crystals, we construct an interface by connecting two MSIS waveguides with different topological properties (inverted Zak phases of bulk bands). The topological interface states in the MSIS waveguides are observed experimentally. The measured decay lengths of the interface states agree excellently with the numerical results. These localized interface states may find potential applications in miniaturized microwave devices. (C) 2016 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据