Numerical Investigation of a Branch-Shaped Filter Based on Metal-Insulator-Metal Waveguide

被引：37
|
作者：
Zhang, Zhongyue [1 ]
Wang, Jiandong [2 ]
Zhao, Yanan [1 ]
Lu, Dong [1 ]
Xiong, Zuhong [1 ]
机构：
[1] Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
来源：
PLASMONICS | 2011年 / 6卷 / 04期
关键词：
Surface plasmon polariton; Waveguide; Filter; Finite difference time-domain method;
D O I：
10.1007/s11468-011-9263-y
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Using the finite difference time-domain method, we present a comprehensive numerical investigation of a branch-shaped filter based on the metal-insulator-metal (MIM) waveguide. The results show that several passbands and stopbands appear in the transmission spectra, which are resulted by the phase differences between the surface plasmon polaritons (SPPs) propagating along the straight waveguide and the SPPs resonating in the circuit formed by the branch and the straight waveguide. The effects of the structural parameters of the branch-shaped filters on their transmission properties are also studied. These results not only present an alternative plasmonic filter for the MIM waveguides but also help us to understand the transmission properties of the circuit-shaped structures.
引用
收藏
页码：773 / 778
页数：6
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