8 October 2004 Waveguiding light in air with ultralow index metamaterials
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Metamaterials can be engineered to have the real part of the effective refractive index less than unity at optical wavelengths. These composite materials exhibit total external reflection and hence can be utilized in the cladding of hollow optical waveguides. We investigate the use of one- and two-dimensional silver-dielectric metamaterials in waveguides. In particular, we discuss the effects of scaling down the size of the metal features in the metamaterial.
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Brian T. Schwartz, Brian T. Schwartz, Rafael Piestun, Rafael Piestun, } "Waveguiding light in air with ultralow index metamaterials", Proc. SPIE 5515, Nanoengineering: Fabrication, Properties, Optics, and Devices, (8 October 2004); doi: 10.1117/12.559851; https://doi.org/10.1117/12.559851

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