中国物理B ›› 2013, Vol. 22 ›› Issue (3): 34102-034102.doi: 10.1088/1674-1056/22/3/034102

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

Manipulating surface plasmon waves by transformation optics: Design examples of beam squeezer, bend, and omnidirectional absorber

余振中, 冯一军, 王正斌, 赵俊明, 姜田   

  1. Department of Electronic Engineering, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
  • 收稿日期:2012-07-07 修回日期:2012-09-03 出版日期:2013-02-01 发布日期:2013-02-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60990322, 60990320, 60801001, and 61101011) and the Specialized Research Fund for Doctoral Program of Higher Education of China (Grant No. 20100091110036).

Manipulating surface plasmon waves by transformation optics: Design examples of beam squeezer, bend, and omnidirectional absorber

Yu Zhen-Zhong (余振中), Feng Yi-Jun (冯一军), Wang Zheng-Bin (王正斌), Zhao Jun-Ming (赵俊明), Jiang Tian (姜田)   

  1. Department of Electronic Engineering, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
  • Received:2012-07-07 Revised:2012-09-03 Online:2013-02-01 Published:2013-02-01
  • Contact: Feng Yi-Jun E-mail:yjfeng@nju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60990322, 60990320, 60801001, and 61101011) and the Specialized Research Fund for Doctoral Program of Higher Education of China (Grant No. 20100091110036).

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摘要： We present several design examples of how to apply the transformation optics and curved space under coordinate transformation to manipulating the surface plasmon waves in a controlled manner. We demonstrate in detail the design procedure of the plasmonic wave squeezer, in-plane bend and omnidirectional absorber. We show that the approximation method of modifying only the dielectric material of a dielectric-metal surface of the plasmonic device could lead to acceptable performance, which facilitates the fabrication of the device. The functionality of the proposed plasmonic device is verified using three-dimensional full-wave electromagnetic simulations. Aiming at practical realization, we also show the design of plasmonic in-plane bend and omnidirectional absorber by an alternative transformation scheme, which results in simple device structure with a tapered isotropic dielectric cladding layer on the top of the metal surface that can be fabricated with the existing nanotechnology.

关键词: transformation optics, surface plasmon polaritons, metamaterial

Abstract: We present several design examples of how to apply the transformation optics and curved space under coordinate transformation to manipulating the surface plasmon waves in a controlled manner. We demonstrate in detail the design procedure of the plasmonic wave squeezer, in-plane bend and omnidirectional absorber. We show that the approximation method of modifying only the dielectric material of a dielectric–metal surface of the plasmonic device could lead to acceptable performance, which facilitates the fabrication of the device. The functionality of the proposed plasmonic device is verified using three-dimensional full-wave electromagnetic simulations. Aiming at practical realization, we also show the design of plasmonic in-plane bend and omnidirectional absorber by an alternative transformation scheme, which results in simple device structure with a tapered isotropic dielectric cladding layer on the top of the metal surface that can be fabricated with the existing nanotechnology.

Key words: transformation optics, surface plasmon polaritons, metamaterial

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

  • 41.20.Jb
73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)) 78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials)