负折射率缺陷层光子晶体的缺陷模和光学增强

研究了缺陷层为负折射率材料的一维光子晶体的带隙结构.研究结果表明：与缺陷层为正折射率材料的同类型结构相比,负折射率材料缺陷模的宽度变宽,且随着缺陷层厚度的增加,缺陷模向高频（短波）方向移动,缺陷模的移动速度也大.同时研究了负折射率缺陷层位置的不同对光子晶体透射特性的影响以及光学增强效应.

The Properties of Defect Mode and Optical Enhancement for 1D Photonic Crystals with a Defect Layer of Negative-refractive-index Materials

The band gap properties of one-dimensional photonic crystals with a defect layer of negative-refractive-index materials are studied. The defect mode width is larger than that of conventional one-dimensional photonic crystals with a defect layer of positive-refractive-index materials;The defect mode of the former is different from that of the latter. It will show a shift in the direction of high frequency,and has a bigger shifting velocity. Furthermore it is studied the effects on the transmission properties of the former photonic crystals caused by change in position of the defect layer with negative refractive index. Finally the optical enhancement of the former photonic crystals is also investigated.