Characteristics of the Coupled-Resonator Structure Based on a Stub Resonator and a Nanodisk Resonator  

作　　者：尚策 陈召 王鲁橹 赵玉芳 段高燕 于丽 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,and School of Science Beijing University of Posts and Telecommunications,Beijing 100876

出　　处：《Chinese Physics Letters》2014年第11期58-61,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grants Nos 11374041 and 11374042, the National Basic Research Program of China under Grants No 2010CB923202, and the Fund of State Key Laboratory of Information Photonics and Optical Communications of Beijing University of Posts and Telecommunications.

摘　　要：A coupled-resonator structure consisting of a stub resonator and a nanodisk resonator is proposed and numeri- cally investigated by using a two-dimensional finite element method. Simulation results show that two resonant modes occur in the transmission spectra, and the sharp and asymmetric Fano-lines increase with the wavelength resolution. We also analyze the properties of two resonant modes of the structure and design a similar structure supporting only one resonant mode, which has better wavelength resolution. Our models are important for improving the wavelength resolution in plasmonic devices and the sensitivity in sensors.A coupled-resonator structure consisting of a stub resonator and a nanodisk resonator is proposed and numeri- cally investigated by using a two-dimensional finite element method. Simulation results show that two resonant modes occur in the transmission spectra, and the sharp and asymmetric Fano-lines increase with the wavelength resolution. We also analyze the properties of two resonant modes of the structure and design a similar structure supporting only one resonant mode, which has better wavelength resolution. Our models are important for improving the wavelength resolution in plasmonic devices and the sensitivity in sensors.

分 类 号：TN751.2[电子电信—电路与系统] TM131.4[电气工程—电工理论与新技术]