Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (12): 124202-124202.doi: 10.1088/1674-1056/22/12/124202

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

A planar chiral nanostructure with asymmetric transmission of linearly polarized wave and huge optical activity in near-infrared band

刘道亚, 罗孝阳, 刘锦景, 董建峰   

  1. Institute of Optical Fiber Communication and Network Technology, Ningbo University, Ningbo 315211, China
  • 收稿日期:2013-05-13 修回日期:2013-07-02 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61078060), the Fund from the Ningbo Optoelectronic Materials and Devices Creative Team, China (Grant No. 2009B21007), and partially sponsored by K. C. Wong Magna Fund in Ningbo University.

A planar chiral nanostructure with asymmetric transmission of linearly polarized wave and huge optical activity in near-infrared band

Liu Dao-Ya (刘道亚), Luo Xiao-Yang (罗孝阳), Liu Jin-Jing (刘锦景), Dong Jian-Feng (董建峰)   

  1. Institute of Optical Fiber Communication and Network Technology, Ningbo University, Ningbo 315211, China
  • Received:2013-05-13 Revised:2013-07-02 Online:2013-10-25 Published:2013-10-25
  • Contact: Dong Jian-Feng E-mail:dongjianfeng@nbu.edu.cn, nbu-djf@21cn.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61078060), the Fund from the Ningbo Optoelectronic Materials and Devices Creative Team, China (Grant No. 2009B21007), and partially sponsored by K. C. Wong Magna Fund in Ningbo University.

摘要: Just like an electronic diode that allows the electrical current to flow in one direction only, a kind of chiral metamaterial structure with a similar functionality for the electromagnetic wave is proposed. The designed nanostructure that consists of twisted metallic split-ring resonators on both sides of a dielectric substrate achieves asymmetric transmission for a forward and backward propagating linearly polarized wave by numerical simulation in near-infrared band. Difference in transmission efficiency of the optimized structure between the same polarized waves incident from opposite directions can reach a maximum at the communication wavelength (1.55 μm). Moreover, the simulation results of this structure also exhibit strong optical activity and circular dichroism.

关键词: asymmetric transmission, optical activity, linearly polarized wave, circular dichroism

Abstract: Just like an electronic diode that allows the electrical current to flow in one direction only, a kind of chiral metamaterial structure with a similar functionality for the electromagnetic wave is proposed. The designed nanostructure that consists of twisted metallic split-ring resonators on both sides of a dielectric substrate achieves asymmetric transmission for a forward and backward propagating linearly polarized wave by numerical simulation in near-infrared band. Difference in transmission efficiency of the optimized structure between the same polarized waves incident from opposite directions can reach a maximum at the communication wavelength (1.55 μm). Moreover, the simulation results of this structure also exhibit strong optical activity and circular dichroism.

Key words: asymmetric transmission, optical activity, linearly polarized wave, circular dichroism

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
42.25.Ja (Polarization)