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Controlling the evanescent waves using metamaterials
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Paper Abstract

In this paper we discuss the role of evanescent waves in nanophotonic devices, especially in metamaterials. We discuss how metamaterial cladding increases the power confinement in waveguides by increasing the momentum of evanescent waves. The momentum of evanescent waves is controlled in such a fashion that condition of total internal reflection is not disturbed. This becomes possible by making the cladding anisotropic. Anisotropic cladding gives the facility to control the parallel and perpendicular components of wave vector individually. We analyze the efficiency of this technique in case of waveguides. We have also discussed the advantages of collecting evanescent waves for imaging sub wavelength objects.

Paper Details

Date Published: 16 September 2016
PDF: 6 pages
Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99182J (16 September 2016); doi: 10.1117/12.2237261
Show Author Affiliations
Nishant Shankhwar, Delhi Technological Univ. (India)
Ravindra Kumar Sinha, Delhi Technological Univ. (India)
Central Scientific Instruments Organization (India)
Yogita Kalra, Delhi Technological Univ. (India)

Published in SPIE Proceedings Vol. 9918:
Metamaterials, Metadevices, and Metasystems 2016
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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