Manipulating Propagation Constants of Silver Nanowire Plasmonic Waveguide Modes Using a Dielectric Multilayer Substrate

被引：10

作者：

Xiang, Yifeng ^{[1
]}

Chen, Junxue ^{[2
]}

Zhang, Douguo ^{[1
]}

Wang, Ruxue ^{[1
]}

Kuai, Yan ^{[1
]}

Lu, Fengya ^{[1
]}

Tang, Xi ^{[1
]}

Wang, Pei ^{[1
]}

Ming, Hai ^{[1
]}

Rosenfeld, Mary ^{[3
]}

Badugu, Ramachandram ^{[3
]}

Lakowicz, Joseph R. ^{[3
]}

机构：

[1] Univ Sci & Technol China, Inst Photon, Dept Opt & Opt Engn, Hefei 230026, Anhui, Peoples R China

[2] Southwest Univ Sci & Technol, Sch Sci, Mianyang 621010, Sichuan, Peoples R China

[3] Univ Maryland, Ctr Fluorescence Spect, Sch Med, Dept Biochem & Mol Biol, Baltimore, MD 21201 USA

来源：

APPLIED SCIENCES-BASEL | 2018年 / 8卷 / 01期

关键词：

silver nanowire; surface plasmon polariton waveguide; dielectric multilayer; Bloch surface wave; photonic band gap; FLUORESCENCE; RADIATION;

D O I：

10.3390/app8010144

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Experiments and numerical simulations demonstrate that when a silver nanowire is placed on a dielectric multilayer, but not the commonly used bare glass slide, the effective refractive index of the propagating surface plasmons along the silver nanowire can be controlled. Furthermore, by increasing the thickness of the top dielectric layer, longer wavelength light can also propagate along a very thin silver nanowire. In the experiment, the diameter of the silver nanowire could be as thin as 70 nm, with the incident wavelength as long as 640 nm. The principle of this control is analysed from the existence of a photonic band gap and the Bloch surface wave with this dielectric multilayer substrate.

引用

页数：10

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