Side-Coupled Cavity-Induced Fano Resonance and Its Application in Nanosensor

被引：28

作者：

Chen, Zhao ^{[1
,2
]}

Cao, Xueyan ^{[1
,2
]}

Song, Xiaokang ^{[1
,2
]}

Wang, Lulu ^{[1
,2
]}

Yu, Li ^{[1
,2
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China

来源：

PLASMONICS | 2016年 / 11卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Surface plasmons; Fano resonance; Sensor; Integrated optics devices; INDUCED TRANSPARENCY; PLASMONIC SENSOR; RESONATORS;

D O I：

10.1007/s11468-015-0035-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：

A compact structure based on plasmonic metal-insulator-metal (MIM) side-coupled cavities for nanosensor is proposed and numerically simulated. Simulation results show that a typical Lorentzian and Fano-like response emerge in the transmission spectrum, and they can be easily tuned by changing the length of the side cavity and the material imbedded in the resonator. Based on above analysis, our structures offer flexibility to design nanosensor with a sensitivity of similar to 1820 nm/RIU and a figure of merit about 4.5 x 10(4). By adding another side-coupled cavity, multiple Fano resonances are achieved and the sensing properties are also investigated. Our structures may have important potential applications in highly integrated optical circuits and networks, especially for nanosensor, spectral splitter, and nonlinear devices.

引用

页码：307 / 313

页数：7

共 25 条

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