Abstract Negative-index refraction is demonstrated in a lamellar composite with epsilon-negative (ENG) and mu-negative (MNG) materials stacked alternatively. Based on the effective medium approximation, simultaneously negative effective permittivity and permeability of such a lamellar composite are obtained theoretically and further proven by full-wave simulations. Consequently, the renowned left-handed metamaterial comprising split ring resonators and wires is interpreted as an analogy of such ENG--MNG layers. In addition, beyond the effective medium approximation, the propagating field squeezed near the ENG/MNG interface is demonstrated to be left-handed surface waves with backward phase velocity.
Received: 08 November 2005
Revised: 23 April 2006
Accepted manuscript online:
Fund: Project supported by the State Key Program for Basic Research of China (Grant No 2004CB619003), and by the National Natural Science Foundation of China (Grant No 90201008).
Cite this article:
Dong Zheng-Gao(董正高), Zhu Shi-Ning(祝世宁), and Liu Hui(刘辉) Numerical simulations of negative-index refraction in a lamellar composite with alternating single negative layers 2006 Chinese Physics 15 1772
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