Electromagnetically Induced Transparency and Refractive Index Sensing for a Plasmonic Waveguide with a Stub Coupled Ring Resonator

被引：55
|
作者：
Zhang, Z. D. [1 ,2 ]
Wang, R. B. [1 ,2 ,3 ]
Zhang, Z. Y. [4 ]
Tang, J. [1 ,2 ]
Zhang, W. D. [1 ,2 ]
Xue, C. Y. [1 ,2 ]
Yan, S. B. [1 ,2 ]
机构：
[1] North Univ China, Sci & Technol Elect Test & Measurement Lab, Taiyuan 030051, Peoples R China
[2] North Univ China, Minist Educt, Key Lab Instrumentat Sci & Dynam Measurement, Taiyuan 030051, Peoples R China
[3] North Univ China, Sch Mechatron Engn, Taiyuan 030051, Peoples R China
[4] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
来源：
PLASMONICS | 2017年 / 12卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Surface plasmon polaritons; Metal-insulator-metal waveguide; Refractive index sensor; Finite element method; FANO RESONANCE;
D O I：
10.1007/s11468-016-0352-9
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：
A plasmonic refractive index sensor based on electromagnetically induced transparency (EIT) composed of a metal-insulator-metal (MIM) waveguide with stub resonators and a ring resonator is presented. The transmission properties and the refractive index sensitivity are numerically studied with the finite element method (FEM). The results revealed an EIT-like transmission spectrum with an asymmetric line profile and a refractive index sensitivity of 1057 nm/RIU are obtained. The coupled mode theory (CMT) based on transmission line theory is adopted to illustrate the EIT-like phenomenon. Multiple EIT-like peaks are observed in the transmission spectrum of the derived structures based on the MIM waveguide with stub resonator coupled ring resonator. To analyze the multiple EIT-like modes of the derived structures, the H (z) field distribution is calculated. In addition, the effect of the structural parameters on the EIT-like effect is also studied. These results provide a new method for the dynamic control of light in the nanoscale.
引用
收藏
页码：1007 / 1013
页数：7
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