Investigation on abnormal group velocities in 1D coaxial photonic crystals  

作　　者：TONG Yuanwei ZHANG Yewen HE Li LI Hongqiang CHEN Hong 

机构地区：[1]Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China [2]School of Electronics and Information Engineering, Tongji University,Shanghai 200092, China [3]University of Shanghai for Science and Technology, Shanghai 200093, China

出　　处：《Chinese Science Bulletin》2006年第11期1281-1286,共6页

基　　金：This work was supported by the 973 Project （2001CB610406） ;the National Natural Science Foundation of China （Grant Nos. 50477048 and 10474072）

摘　　要：In this paper, the group velocities of electromagnetic wave for a one-dimensional coaxial photonic crystal in the stop bands with and without defect mode are studied. The results show that the group velocities exceed c (the speed of light in vac- uum) in the stop band and it tends to be very slow in the defect mode. The group velocities also are ob- tained using the method of the transmission line and transmission matrix. The simulating results agree well with the experimental.In this paper, the group velocities of electromagnetic wave for a one-dimensional coaxial photonic crystal in the stop bands with and without defect mode are studied. The results show that the group velocities exceed c （the speed of light in vacuum） in the stop band and it tends to be very slow in the defect mode. The group velocities also are obtained using the method of the transmission line and transmission matrix. The simulating results agree well with the experimental.

关 键 词：同轴晶体 群速度 超光速 固体物理 

分 类 号：O48[理学—固体物理]