Tunable photonic-like modes in graphene-coated nanowires

被引：7

作者：

Wu, Zhiyong ^{[1
]}

Ning, Tingyin ^{[2
,3
]}

Li, Jiaqi ^{[1
]}

Zhang, Min ^{[1
]}

Su, Hong ^{[1
]}

Li, Irene Ling ^{[1
]}

Liang, Huawei ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen Key Lab Laser Engn, Shenzhen 518060, Peoples R China

[2] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250358, Peoples R China

[3] Shandong Normal Univ, Sch Phys & Elect, Shandong Prov Key Lab Opt & Photon Device, Jinan 250358, Peoples R China

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 24期

基金：

中国国家自然科学基金;

关键词：

PLASMON MODES; ARRAY;

D O I：

10.1364/OE.27.035238

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this study, the dispersion equations of a graphene-coated nanowire (GN) are solved. It is found that in this waveguide, besides the surface plasmon polaritons (SPPs), there is another branch of guided modes, called photonic-like modes. The propagation distances of the photonic-like modes can be five orders of magnitude longer than those of the SPPs. Moreover, they can be modulated in the range of 10(-4) to 1 m by changing the chemical potential of graphene. In particular, the mode field distributions remain nearly unchanged during the modulation. Based on the analysis performed using COMSOL Multiphysics, we further demonstrated that the propagation losses of the photonic-like modes are dependent on not only the chemical potential of graphene, but also the mode power proportion inside graphene. The photonic-like modes have tremendous potential to be used in optical switches, modulators, and switches in magnetic fields at the nanoscale. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：35238 / 35244

页数：7

共 31 条

[31] Graphene-coated tapered nanowire infrared probe: a comparison with metal-coated probes [J].

Zhu, Bofeng ;

Ren, Guobin ;

Gao, Yixiao ;

Yang, Yang ;

Lian, Yudong ;

Jian, Shuisheng .

OPTICS EXPRESS, 2014, 22 (20) :24096-24103

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