Effects on extraordinary transmission of TE wave through varying structure of sub-wavelength metallic gratings without host media

被引：0
|
作者：
Wang Y.-W. [1 ,2 ]
Chen Y.-J. [1 ]
Meng Z.-H. [1 ]
Shang X.-F. [1 ]
Jin W.-F. [2 ]
Bu M. [1 ]
Xu Y.-Y. [1 ]
Zhu X.-L. [2 ]
机构：
[1] Faculty of Science, Jiangsu University, Zhenjiang
[2] School of Mechanical Engineering, Jiangsu University, Zhenjiang
来源：
Optoelectronics Letters | 2013年 / 9卷 / 1期
基金：
中国国家自然科学基金;
关键词：
Standing Wave; Slit Width; Transmission Peak; Finite Difference Time Domain; Grating Period;
D O I：
10.1007/s11801-013-2376-0
中图分类号：
学科分类号：
摘要：
A model of sub-wavelength metallic grating without host media is proposed. Under the excitation of TE polarized light, the extraordinary transmission is also found, and their transmission energy distributions corresponding to different structural parameters of this model are calculated systematically by using finite difference time domain (FDTD) method. The influence of slit width, grating thickness and grating period on the location of transmission peak is obtained. By studying these relations, it is found that Fabry-Perot-like (FPL) effect of the slit is the main physical reason of this extraordinary transmission. Varying the slit width can cause the change of reflection phase transition at both ends, and then the characteristics of FPL resonance of slit cavity are affected. The surface mode of metallic gratings has less effect on the location of transmission peak. © 2013 Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.
引用
收藏
页码：77 / 80
页数：3
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