A broadband zone plate lens from transformation optics | Zendy

Rui Yang | Zendy; Wenxuan Tang | Zendy; Yang Hao | Zendy

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A broadband zone plate lens from transformation optics

Author(s) -

Rui Yang,

Wenxuan Tang,

Yang Hao

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.012348

Subject(s) - optics , lens (geology) , broadband , fresnel lens , zone plate , fresnel zone , transformation optics , simple lens , fresnel zone antenna , diffraction efficiency , diffraction , fresnel diffraction , fresnel equations , materials science , refractive index , physics , focal length , metamaterial , telecommunications , computer science , directional antenna , antenna (radio) , smart antenna

A zone plate lens utilizing a refractive instead of diffractive approach is presented for broadband operation. By utilizing transformation optics, we compress the conventional hyperbolic lens into a flat one with a few zone plates made of all-dielectric materials. Such a transformed lens maintains the broadband performance of the original lens, thus providing a superior alternative to the diffractive Fresnel element which is inherently narrow band.

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