Negative phase advance in polarization independent, multi-layer negative-index metamaterials
Optical Society of American (OSA)
8835 - 8844
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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 twolayer 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. ©2008 Optical Society of America.
Backward wave propagation
Left-handed (CRLH) transmission
Published Version (Please cite this version)http://dx.doi.org/10.1364/OE.16.008835
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