Negative phase advance in polarization independent, multi-layer negative-index metamaterials

被引：38

作者：

Aydin, Koray ^{[1
]}

Li, Zhaofeng

Sahin, Levent

Ozbay, Ekmel

机构：

[1] Bilkent Univ, Nanotechnol Res Ctr, Dept Phys, TR-06800 Ankara, Turkey

[2] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 12期

关键词：

D O I：

10.1364/OE.16.008835

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a polarization independent negative-index metamaterial (NIM) at microwave frequencies. Transmission measurements and simulations predict a left-handed transmission band with negative permittivity and negative permeability. A negative-index is verified by using the retrieval procedure. Effective parameters of single-layer and two-layer NIMs are shown to be different. Negative phase advance is verified within the negative-index regime by measuring the phase shift between different sized negative-index metamaterials. Backward wave propagation is observed in the numerical simulations at frequencies where the phase advance is negative. (c) 2008 Optical Society of America.

引用

页码：8835 / 8844

页数：10

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