Electromagnetic tunneling in a sandwich structure containing single negative media.
In this paper, the electromagnetic (EM) tunneling phenomenon in a sandwich structure consisting of an mu-negative (MNG) medium, air, and an epsilon-negative (ENG) medium is investigated by means of the transfer-matrix method and microwave experiments. Both results demonstrate that by properly choosing parameters, EM waves can efficiently tunnel through a long distance over several hundreds times the length of the device. Unlike in the ENG-MNG slabs, the electric and the magnetic field of the tunneling mode is interestingly separated and localized at the interface of MNG-air and ENG-air, respectively. Therefore, this structure may be important for potential applications in wireless information and energy transmission, for its high efficiency, security, and health.
Feng
Tuanhui
T
Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China. liyunhui@mail.tongji.edu.cn
Li
Yunhui
Y
Jiang
Haitao
H
Sun
Yong
Y
He
Li
L
Li
Hongqiang
H
Zhang
Yewen
Y
Shi
Yunlong
Y
Chen
Hong
H