Resonant Effects of FPL and SPP for Light Transmitting through Subwavelength Metallic Gratings

被引：1
|
作者：
Ma You-Qiao [1 ,2 ]
Zhou Jun [1 ]
He Miao [3 ]
Petti, L. [4 ]
Mormile, P. [4 ]
机构：
[1] Ningbo Univ, Dept Phys, Fac Sci, Ningbo 315211, Zhejiang, Peoples R China
[2] Dublin Inst Technol, Photon Res Ctr, Sch Elect & Commun Engn, Dublin 8, Ireland
[3] S China Normal Univ, Inst Optoelect Mat & Technol, Guangzhou 510631, Guangdong, Peoples R China
[4] CNR, Inst Cybernet, I-80072 Pozzuoli, Italy
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2011年 / 56卷 / 04期
基金：
中国国家自然科学基金;
关键词：
gratings; subwavelength structures; optics at surfaces; surface plasmons; TRANSMISSION; DIFFRACTION; LOSSES; SLITS; FILM;
D O I：
10.1088/0253-6102/56/4/22
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A new model is proposed to explain the physical mechanism of the extraordinary transmission enhancement in subwavelength metallic grating. The extraordinary transmission enhancement is described by the co-operation of Fabry-Perot-like (FPL) resonance and the surface plasmon polariton (SPP) resonance. The rigorous coupled-wave analysis (RCWA) and the finite difference time domain (FDTD) method are employed to illustrate the model by calculating the transmission and the field distributions in the subwavelength metallic grating, respectively. And the numerical calculations show that transmission enhancement is achieved when the coupling resonance of the incident light, the surface plasmon polariton mode and the Fabry-Perot-Like mode is happened, which are in good agreement with the proposed model.
引用
收藏
页码：727 / 732
页数：6
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