摘要
The photonic band gap structure of 1D photonic crystal with a negative index medium defect layer is studied by using the transfer matrix method. Investigations show that the introdufion of negative index medium defect layer and the increase of the negative index value will result in an extension of the band gap. Moreover, by increasing the negative index, the width of defect layer and the numbers of period photonic crystal, the width of defect modes will be narrowed, which is advantaged to obtain optical filters with narrow band. Finally, the effects of absorption on the properties of band gap and on defect modes have been discussed.
基金
Thes work is supported by the National Natural Science Founda-tion of China (Grant No. 10576012 and 60538010)
the programof the Ministry of Education of China for New Century ExcellentTalents in University, and the Specialized Research Fund for theDoctoral Program of Higher Education of China (Grant No.20040532005).
