Higher extinction ratio circular polarizers with hetero-structured double-helical metamaterials | Zendy

Yang Yu | Zendy; Zhenyu Yang | Zendy; Shengxi Li | Zendy; Ming Zhao | Zendy

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Higher extinction ratio circular polarizers with hetero-structured double-helical metamaterials

Author(s) -

Yang Yu,

Zhenyu Yang,

Shengxi Li,

Ming Zhao

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.19.010886

Subject(s) - polarizer , metamaterial , extinction ratio , optics , extinction (optical mineralogy) , circular polarization , physics , materials science , helix (gastropod) , birefringence , wavelength , ecology , snail , biology , microstrip

We have recently shown circular polarizers with the homo-structured double-helical metamaterials, which have broader operation bands than those of the single-helical structures [Opt. Lett. 35, 2588 (2010)]. However, trying to get more operation bands deteriorates the extinction ratio. In this paper, we proposed circular polarizers with hetero-structured double-helical metamaterials. The extinction ratios of these circular polarizers are two times higher than those with homo-structured double-helical metamaterials. Furthermore, we qualitatively explained the phenomenon of the higher extinction ratio from the viewpoint of the interaction between the two helix-wires in a double-helical unit.

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