Journal
OPTICS EXPRESS
Volume 22, Issue 10, Pages 11707-11712Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.011707
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Funding
- National Natural Science Foundation of China [61078060]
- Ningbo Optoelectronic Materials and Devices Creative Team [2009B21007]
- Outstanding (Postgraduate) Dissertation Growth Foundation of Ningbo University [PY2013012]
- Scientific Research Foundation of Graduate School of Ningbo University
- K. C. Wong Magna Fund in Ningbo University
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In this paper, a three layered metamaterial composed of a ring-chain structure sandwiched between two layers of twisted sub-wavelength cut-wire arrays is proposed and investigated. The designed structure is optimized such that asymmetric transmission with an extremely broad bandwidth, sharp rejection stop-band and high transmittance is achieved. The physical mechanism is accounted for that the metallic layers form the Fabry-Perot-like resonance cavity, enhancing the polarization conversion efficiency between two orthogonal linearly polarized waves. To some extent, this approach offers a way to strengthen asymmetric transmission effect. (C) 2014 Optical Society of America
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