Controllable electromagnetic transmission based on dual-metallic grating structures composed of subwavelength slits

被引：77
|
作者：
Cheng, Chen [1 ]
Chen, Jing [1 ]
Wu, Qi-Yang [1 ]
Ren, Fang-Fang [1 ]
Xu, Ji [1 ]
Fan, Ya-Xian [1 ]
Wang, Hui-Tian [1 ]
机构：
[1] Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 11期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2784175
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electromagnetic (EM) transmission through dual-metallic grating (DMG) structures composed of slits arrays, with the longitudinal interval G and the lateral displacement L, is investigated by using the finite-difference time-domain method. The results show that the EM transmission property can be controlled by changing G or/and L, such as tunable wavelength of high transmission, changeable transmittance for a special wavelength, and suppressed EM transmission over a broad spectral range. The DMG structures have potential applications in the future photonics. In addition, some advantages of DMGs with respect to the single-metallic gratings are also discussed.
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页数：3
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