Ultra-thin reflecting polarization beam splitter under spherical waves’ illumination by using single-layered anisotropic metasurface

Guo, Wenlong; Wang, Guangming; Li, Haipeng; Zhuang, Yaqiang; Shuai, Chen-yang

doi:10.1007/s00339-016-0713-4

Cited by 12 publications

(4 citation statements)

References 20 publications

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“…On the contrary, anisotropic metasurfaces (AMs) can modulate orthogonally polarised waves independently with high efficiency, which provides a promising route for beam shaping and controlling. Based on the feature of anisotropy, Cui [20,21] and Wang [22,23] have done many intensive researches on the reflections of the AMs.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band reflected beam steering with single‐layered focusing anisotropic metasurface

Chen

Zhao

Xing

et al. 2019

IET Microwaves, Antennas & Propagation

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Phase gradient metasurface (PGM) is capable of realising anomalous wave deflection, while focusing metasurface is widely adopted in converging electromagnetic (EM) waves through phase compensation. Here, a single‐layered focusing anisotropic metasurface (FAM) for dual‐band reflected beam steering is proposed. The anisotropic metasurface is composed of modified Jerusalem cross‐structures with which reflected waves can be focused and deflected simultaneously. Furthermore, the distributions of reflection phase required in two frequency bands can be controlled independently by adjusting the dimensions of the cells along two orthogonal directions. To verify the proposed structure, a prototype with a size of 260 × 260 mm is fabricated, assembled, and measured. Good performances have been achieved in both simulation and measurement results, which agree with theoretical predictions. The measured results indicate that reflected waves generated by the FAM can be deflected to −42° with a gain of 17.5 dBi and −30° with a gain of 20.5 dBi at 5.7 and 10 GHz, respectively.

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Section: Introductionmentioning

confidence: 99%

Dual‐band reflected beam steering with single‐layered focusing anisotropic metasurface

Chen

Zhao

Xing

et al. 2019

IET Microwaves, Antennas & Propagation

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“…Therefore, several anisotropic metasurfaces have been demonstrated to tailor the reflective wavefront under illumination with different polarizations in visible, infrared, and THz regions [30][31][32]. More recently, researchers have brought the anisotropic reflective metasurface into the microwave regime to realize the polarization-dependent manipulation of microwaves for wireless communication [33].…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Microwave Devices for Polarization-Dependent Wavefront Shaping Based on an Anisotropic Metasurface

Guo

2018

Applied Sciences

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Metasurfaces have recently become a promising material, offering new degrees of freedom in molding electromagnetic wave properties. In this work, we propose and numerically investigate ultrathin microwave devices for polarization-dependent wavefront shaping based on an anisotropic metasurface, which consists of a square metal ring with a cross, a dielectric substrate, and a metal ground plane. It is demonstrated the proposed metasurface can independently manipulate reflective x- and y-polarized wavefronts at frequency of 15 GHz via engineering of the metal cross. Furthermore, the reflective efficient is extremely high, reaching a near-unity value of 0.98. Based on this anisotropic metasurface, a polarization beam splitter is achieved by artificially arranging the spatial distribution of metasurfaces with prescribed geometries. In addition, we successfully design a focusing metasurface to separate the x- and y-polarized beams via focusing them at different positions. The proposed approach paves a way toward the applications of the metasurface in a microwave band.

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“…Previous designs targeted splitting of orthogonal polarizations in reflection and transmission and were implemented using dielectric or semiconductor metasurfaces, 7,28,29 or alternatively in radio-frequency band. [30][31][32] Our device utilizes gap surface plasmon (GSP) resonators [33][34][35][36] as constitutive elements, which support highly localized plasmonic resonances that form flexible meta-atom building blocks of metasurfaces, 1,2,[18][19][20]37 with the possibility to engineer the local phase and reflection amplitude in gradient metasurfaces. 18,38 GSP-based metasurfaces operate in the reflection mode, which enables high efficiency, 15 reaching ∼ 80% for various applications.…”

mentioning

confidence: 99%

“…It functions as a polarization-sensitive parabolic reflector (hereinafter called a polarization splitting and focusing metamirror (PSFMM)) that simultaneously splits orthogonal light polarizations and focuses them into different focal spots at the design wavelength, λ = 800 nm (an illustration of the working principle is shown in Figure ). Previous designs targeted splitting of orthogonal polarizations in reflection and transmission and were implemented using dielectric or semiconductor metasurfaces ,, or alternatively in the radio frequency band. − …”

mentioning

confidence: 99%

Multifunctional Metamirror: Polarization Splitting and Focusing

et al. 2017

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Metasurfaces are paving the way to improve traditional optical components by integrating multiple functionalities into one optically flat metasurface design. We demonstrate the implementation of a multifunctional gap surface plasmon-based metasurface which, in reflection mode, splits orthogonal linear light polarizations and focuses into different focal spots. The fabricated configuration consists of 50 nm thick gold nanobricks with different lateral dimensions, organized in an array of 240 nm×240 nm unit cells on the top of a 50 nm thick silicon dioxide layer, which is deposited on an optically thick reflecting gold substrate. Our device features high efficiency (up to ∼ 65%) and polarization extinction ratio (up to ∼ 30 dB), exhibiting broadband response in the near-infrared band (750-950 nm wavelength) with the focal length dependent on the wavelength of incident light. The proposed optical component can be forthrightly integrated into photonic circuits or fiber optic devices. 1 arXiv:1709.04257v2 [cond-mat.mes-hall]

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Ultra-thin reflecting polarization beam splitter under spherical waves’ illumination by using single-layered anisotropic metasurface

Cited by 12 publications

References 20 publications

Dual‐band reflected beam steering with single‐layered focusing anisotropic metasurface

Dual‐band reflected beam steering with single‐layered focusing anisotropic metasurface

Ultrathin Microwave Devices for Polarization-Dependent Wavefront Shaping Based on an Anisotropic Metasurface

Multifunctional Metamirror: Polarization Splitting and Focusing

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