META 2021, META'12

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Time domain investigation of the tunneling modes in photonic heterostructure containing single negative materials
Liwei Zhang, Yewen Zhang, guiqiang Du

Last modified: 2015-07-04


We present a theoretical investigation into the energy transport and transient wave propagation in the metamaterial tunneling structures consisting of ε-negative (ENG) and μ-negative (MNG) materials. It is proved that the conjugated matched ENG/MNG bilayer and the (zero index material doped) photonic crystal heterostructure can work as a sub-wavelength resonator at tunneling frequency. While the tunneling modes need a certain time to achieve to the steady state and the charge up characteristic time increase (nearly) exponentially with the thickness of the structures. Under the steady state, the waves in the single negative material structures are not evanescent, but a hybrid of traveling wave and reactive standing wave. The phase difference between the electric field and magnetic field varies with the position and time. The investigation of transient wave propagation in the metamaterial tunneling stuctures will help us to understand the interaction process between wave and metamaterial and to design special functional apparatus.