Broadband two-dimensional hyperbolic metasurface for on-chip photonic device applications

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Hyperbolic metasurfaces have attracted much interest due to novel optical properties including self-focusing, diffraction-less propagation, and negative refraction. However, conventional hyperbolic metasurfaces employing transverse-magnetic-like (TM-like) guided modes operate limited to short wavelengths. Here, we propose a broadband hyperbolic metasurface utilizing the transverse-electric-like (TE-like) guided modes of silver nanowires. The symmetric TE-like mode of the nanowire metasurface supports strong near-field coupling through the metallic element for hyperbolicity from visible to near-infrared wavelengths. Using numerical simulations, we examine the modal and dispersion properties depending on the wavelength and geometry. Particularly, negative refraction at the interface between a hyperbolic metasurface and the normal-dispersion planar waveguide is also demonstrated. (C) 2020 Optical Society of America.
Publisher
OPTICAL SOC AMER
Issue Date
2020-05
Language
English
Article Type
Article
Citation

OPTICS LETTERS, v.45, no.9, pp.2502 - 2505

ISSN
0146-9592
DOI
10.1364/OL.392540
URI
http://hdl.handle.net/10203/274771
Appears in Collection
PH-Journal Papers(저널논문)
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