Ultra-broadband and high-efficiency reflective polarization rotator based on fractal metasurface with multiple plasmon resonances

Zheng, Qi; Guo, Chao; Vandenbosch, Guy A. E.; Yuan, Pengliang; Ding, Jun

doi:10.1016/j.optcom.2019.05.044

Cited by 18 publications

(6 citation statements)

References 38 publications

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“…Many surfaces plasmon-based metasurface experiments have achieved THz polarization control. [24][25][26][27] Han et al created quarter WP (QWP) using a bilayer split-ring resonator (SRR) and meander line design, which has a high transmittance of 0.8 at 0.98 THz. 28 Fan et al developed a three-layer metal grating design that could be mechanically assembled into any desired orientation.…”

Section: Introductionmentioning

confidence: 99%

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Multilayered dielectric metamaterial design for terahertz polarization quarter wave plates with ultrabroad achromatic bandwidth

Zhang,

Gong,

Pang

2023

Opt. Eng.

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Section: Introductionmentioning

confidence: 99%

“…Many surfaces plasmon-based metasurface experiments have achieved THz polarization control 24 – 27 Han et al. created quarter WP (QWP) using a bilayer split-ring resonator (SRR) and meander line design, which has a high transmittance of 0.8 at 0.98 THz 28 .…”

Section: Introductionmentioning

confidence: 99%

Multilayered dielectric metamaterial design for terahertz polarization quarter wave plates with ultrabroad achromatic bandwidth

Zhang,

Gong,

Pang

2023

Opt. Eng.

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“…Moreover, a novel square-loop-shaped metasurface has achieved the balance between high efficiency and broad bandwidth, with the fractional bandwidth of 105.6% (r co > 0.9) [46][47][48]. Furthermore, the fractal topology provides a novel and efficient method to meet the growing requirement of high-efficiency broadband OAM generation [49], which deserves further research.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency ultra-broadband orbital angular momentum beam generators enabled by arrow-based fractal metasurface

Liu¹,

Xie²,

Xu³

et al. 2021

J. Phys. D: Appl. Phys.

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Vortex beams carrying orbital angular momentum (OAM) are of great importance owing to the capacity to expand channel capacity of communication systems from microwave to optical regimes. In this work, a single-layer ultra-broadband meta-atom is designed by using the method of fractal. The reflected co-polarization amplitude of the arrow-based fractal meta-atom can exceed 0.9 in a frequency range from 6 to 19.7 GHz and the complete 2π phase control can be achieved by rotating the structure. Based on the proposed meta-atom, metasurface-based vortex beam generators are designed. As an illustrative example, a metasurface-based OAM beam generator with a mode of +1 is designed, fabricated, and measured. Both the experimental and simulated results match well with each other, proving the practicability of the proposed high-efficiency ultra-broadband metasurface.

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“…Many types of multi-order plasmon resonators have been investigated that rotate a linearly polarised (LP) incident wave into its orthogonal counterpart after reflection, i.e. the polarisation rotator [15][16][17][18][19][20][21][22][23][24][25]. Further, various metasurfaces with anisotropic impedances have been used to convert a LP incident wave into a circularly polarised (CP) one [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Dual‐broadband highly efficient reflective multi‐polarisation converter based on multi‐order plasmon resonant metasurface

Zheng

Guo

Vandenbosch

et al. 2020

IET Microwaves, Antennas & Propagation

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In this study, a dual‐broadband reflective polarisation converter with high efficiency for both linear‐to‐linear and linear‐to‐circular polarisations based on a metasurface is proposed. Owing to the characteristics of strong anisotropy and multi‐order plasmon resonances, the proposed polarisation converter can rotate an y/x polarised electromagnetic wave to its cross‐polarised (x/y) direction in the lower frequency band of 7.74–14.44 GHz (a fractional bandwidth of 60.4%) with over 0.9 polarisation conversion ratio. Besides, the proposed structure can also convert a linearly polarised incident wave to a circularly polarised one after reflection in the higher frequency band of 14.95–17.35 GHz (a fractional bandwidth of 14.9%). The performance in the two bands can be controlled separately by altering the proper parameters of the structure. Numerical analysis is used to predict the polarisation states of the proposed polarisation converter. Moreover, the physical mechanism of multiple resonances is discussed based on surface current distributions. A prototype of the polarisation converter is fabricated and measured. A reasonable agreement between the experiments and simulations is obtained. The design has a simple and scalable geometry, and is a good candidate for polarisation control devices in microwave, terahertz and optical frequency regions.

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Ultra-broadband and high-efficiency reflective polarization rotator based on fractal metasurface with multiple plasmon resonances

Cited by 18 publications

References 38 publications

Multilayered dielectric metamaterial design for terahertz polarization quarter wave plates with ultrabroad achromatic bandwidth

Multilayered dielectric metamaterial design for terahertz polarization quarter wave plates with ultrabroad achromatic bandwidth

High-efficiency ultra-broadband orbital angular momentum beam generators enabled by arrow-based fractal metasurface

Dual‐broadband highly efficient reflective multi‐polarisation converter based on multi‐order plasmon resonant metasurface

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