Fano Resonance Based on Multimode Interference in Symmetric Plasmonic Structures and its Applications in Plasmonic Nanosensors  

作　　者：CHEN Zong-Qiang QI Ji-Wei CHEN Jing LI Yu-Dong HAO Zhi-Qiang LU Wen-Qiang XU Jing-Jun SUN Qian 陈宗强;齐继伟;陈靖;李玉栋;郝志强;陆文强;许京军;孙骞(MOE Key Laboratory of Weak Light Nonlinear Photonics,Tianjin Key Laboratory of Photonics Material and Technology,School of Physics,Nankai University,Tianjin 300071)

机构地区：[1]MOE Key Laboratory of Weak Light Nonlinear Photonics,Tianjin Key Laboratory of Photonics Material and Technology,School of Physics,Nankai University,Tianjin 300071

出　　处：《Chinese Physics Letters》2013年第5期131-134,共4页中国物理快报（英文版）

基　　金：the National Natural Science Foundation of China under Grant No 61178004;the Tianjin Natural Science Foundation under Grant No 12JCQNJC01100;the Doctoral Program of Higher Education of China under Grant No 20110031120005;the Program for Changjiang Scholars and Innovative Research Team in Nankai University.

摘　　要：A novel symmetric plasmonic structure consisting of a metal-insulator-metal waveguide and a rectangular cavity is proposed to investigate Fano resonance performance by adjusting the size of the structure.The Fano resonance originates from the interference between a local quadrupolar and a broad spectral line in the rectangular cavity.The tuning of the Fano profile is realized by changing the size of the rectangular cavity.The nanostructure is expected to work as an excellent plasmonic sensor with a high sensitivity of about 530 nm/RIU and a figure of merit of about 650.

关 键 词：Fano WAVEGUIDE tuning 

分 类 号：TN2[电子电信—物理电子学]