National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11074069, 61176116, 11047157]; Hunan Provincial Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province [12JJ4009]; Hunan Provincial Science and Technology Project of China [2012FJ4121]; Aid program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
机构署名：
本校为其他机构
院系归属：
核科学技术学院
摘要：
Optical transmission through a double-layer compound metallic grating (DCMG) composed of two identical compound metallic gratings (CMGs) with two subwavelength slits filled with different dielectrics inside each period is investigated by using the finite-difference time-domain method. The results show that the transmission properties of the DCMG are dependent on both the separation G between the two metallic layers and the phase configurations of the electromagnetic waves at the exits of adjacent slits of each layer. When a suitable separation (G300nm) is chosen, for the DCMG a notable transmi...
