摘要
利用传输矩阵方法研究了不同结构和不同参数调制下的成像特征。结果表明:在近似相同总层数和相同的参数下,不同结构对成像有一定影响:周期结构完美成像的波矢范围最大,thue-mose模型次之,fibonacci模型最小;进一步研究当负折射率介质的介电常数或磁导率偏离1时的成像特点,发现除了可以通过调节负折射率介质的介电常数或磁导率控制尖锐峰的峰值大小外,还可通过改变两种媒质的层数比以及正折射率媒质的吸收系数来控制尖锐峰峰值的大小。
The characteristics of imaging of different structure and parameters are studied by transfer-matrix method.The perfect period structures have the widest wave scope,with thue-more and Fibonacci having the second and the smallest scope.Imaging Characteristics is studied when negative refractive index medium dielectric constant or magnetic conductance deviates 1.It is found that the size of peak can be controlled by adjusting the spectrum-width medium dielectric constant or magnetic conductance and by changing two kinds of medium layer of ratio and the absorption coefficient of positive refractive index structural medium.
出处
《华东交通大学学报》
2011年第1期81-85,共5页
Journal of East China Jiaotong University
基金
华东交通大学科学技术研究项目(09101013)
