Electromagnetic Tunneling in Nonconjugated Epsilon-negative and Mu-negative Metamaterial Pair

摘要

In this paper, the tunneling phenomenon occurring at the interface with great impedance contrast is investigated by numerical calculation. It is found even in this case, perfect transmission can still be achieved theoretically when nonconjugated sub-wavelength epsilonnegative (ENG) and mu-negative (MNG) metamaterial pair is introduced. Moreover, the calculated electromagnetic field distributions show that, only one component of the tunneling mode (either the electric or the magnetic field) is amplified, suppressing another one at the same time. Therefore, the nonconjugated ENG-MNG pair is promising to be applied in modern optic and microwave communication systems for less reflection, compact device volume and flexible control of EM field distribution.