Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film

doi:10.1088/1674-1056/26/11/114103

中国物理B ›› 2017, Vol. 26 ›› Issue (11): 114103-114103.doi: 10.1088/1674-1056/26/11/114103

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film

Benli Wang(王本立), Han Liang(梁涵), Jiafang Li(李家方)

1. Department of Physics, Beijing University of Chemical Technology, Beijing 100029, China;
2. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2017-02-21 修回日期:2017-07-03 出版日期:2017-11-05 发布日期:2017-11-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11647021) and the Fundamental Research Funds for the Central Universities of China (Grant No. ZY1531).

Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film

Benli Wang(王本立)¹, Han Liang(梁涵)¹, Jiafang Li(李家方)²

1. Department of Physics, Beijing University of Chemical Technology, Beijing 100029, China;
2. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2017-02-21 Revised:2017-07-03 Online:2017-11-05 Published:2017-11-05
Contact: Benli Wang E-mail:wangbenli@mail.buct.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11647021) and the Fundamental Research Funds for the Central Universities of China (Grant No. ZY1531).

摘要/Abstract

摘要： The propagation length of surface plasmon polaritons (SPPs) is intrinsically limited by the metallic ohmic loss that is enhanced by the strongly confined electromagnetic field. In this paper, we propose a new class of hybrid plasmonic waveguides (HPWs) that can support long-range SPP propagation while keeping subwavelength optical field confinement. It is shown that the coupling between the waveguides can be well tuned by simply varying the structural parameters. Compared with conventional HPWs, a larger propagation length as well as a better optical field confinement can be simultaneously realized. The proposed structure with better optical performance can be useful for future photonic device design and optical integration research.

关键词: surface plasmon polaritons, hybrid plasmonic waveguide, optical field confinement

Abstract: The propagation length of surface plasmon polaritons (SPPs) is intrinsically limited by the metallic ohmic loss that is enhanced by the strongly confined electromagnetic field. In this paper, we propose a new class of hybrid plasmonic waveguides (HPWs) that can support long-range SPP propagation while keeping subwavelength optical field confinement. It is shown that the coupling between the waveguides can be well tuned by simply varying the structural parameters. Compared with conventional HPWs, a larger propagation length as well as a better optical field confinement can be simultaneously realized. The proposed structure with better optical performance can be useful for future photonic device design and optical integration research.

Key words: surface plasmon polaritons, hybrid plasmonic waveguide, optical field confinement

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

42.82.Et (Waveguides, couplers, and arrays)

王本立, 梁涵, 李家方. Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film[J]. 中国物理B, 2017, 26(11): 114103-114103.

Benli Wang(王本立), Han Liang(梁涵), Jiafang Li(李家方). Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film[J]. Chin. Phys. B, 2017, 26(11): 114103-114103.

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Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film

Tunable coupling of a hybrid plasmonic waveguide consisting of two identical dielectric cylinders and a silver film

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