Ultra-wideband Linear-to-Circular and Circular-to-Linear Polarization Conversion Realized by Anisotropic Metasurface

Bao-Qin, Lin; Huang, Wenzhun; Guo, Jianxin; Wang, Yanwen; Ye, Hong-Jun; Ji, Xiang

doi:10.1007/s11468-022-01731-7

Cited by 8 publications

(3 citation statements)

References 48 publications

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“…Notably, polarization converters demonstrate the ability to manipulate the polarization of THz waves [28]. Such converters facilitate polarization conversion through several modes, encompassing LP to LP [29,30], LP to CP [8,[31][32][33], and CP to LP [34,35] conversions. Another prominent area of research within the domain of metasurfaces is absorbers, which have emerged as significant contributors in the burgeoning field of energy-manipulating devices, primarily owing to their remarkable light-harvesting capabilities.…”

Section: Introductionmentioning

confidence: 99%

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO<sub>2</sub>

Iqbal,

Jie,

Qureshi

et al. 2024

Preprint

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Aiming at the limitations of single-functionality, limited applicability, and complex designs prevalent in current metasurfaces, we propose a terahertz multifunctional and multiband tunable metasurface utilizing a VO2-metal hybrid structure. This metasurface structure comprises a top VO2-metal resonance layer, a middle polyimide dielectric layer, and a gold film reflective layer at the bottom. This metasurface exhibits multifunctionality, operating independently of polarization and incident angle. The varying conductivity states of the VO2 layers, enable the metasurface to achieve various terahertz functionalities, including single-band absorption, broadband THz absorption, and multiband perfect polarization conversion for linear (LP) and circularly polarized (CP) incident waves. Finally, we believe that the functional adaptability of the proposed metasurface expands the repertoire of options available for future terahertz device designs.

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Section: Introductionmentioning

confidence: 99%

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO<sub>2</sub>

Iqbal,

Jie,

Qureshi

et al. 2024

Preprint

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show abstract

“…Notably, polarization converters demonstrate the ability to manipulate the polarization of THz waves [ 29 ]. Such converters facilitate polarization conversion through several modes, encompassing LP-to-LP [ 30 , 31 ], LP-to-CP [ 9 , 32 , 33 , 34 ], and CP-to-LP [ 35 , 36 ] conversions.…”

Section: Introductionmentioning

confidence: 99%

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO2

Iqbal,

Qureshi,

Jie

et al. 2024

Nanomaterials

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Aiming at the limitations of single-functionality, limited-applicability, and complex designs prevalent in current metasurfaces, we propose a terahertz multifunctional and multiband tunable metasurface utilizing a VO2-metal hybrid structure. This metasurface structure comprises a top VO2-metal resonance layer, a middle polyimide dielectric layer, and a gold film reflective layer at the bottom. This metasurface exhibits multifunctionality, operating independently of polarization and incident angle. The varying conductivity states of the VO2 layers, enabling the metasurface to achieve various terahertz functionalities, including single-band absorption, broadband THz absorption, and multiband perfect polarization conversion for linear (LP) and circularly polarized (CP) incident waves. Finally, we believe that the functional adaptability of the proposed metasurface expands the repertoire of options available for future terahertz device designs.

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“…Different polarized EM waves have different propagation characteristics, a suitable polarization should be chosen for EM waves propagating in different propagation environments, so it is of great significance to effectively modulate the polarization of various electromagnetic waves in real time. At present, the LP and CP waves are both widely used, in order to realize the interconversion of LP and CP waves, many LP-to-CP polarization converter based on various metasurfaces have been proposed, these polarization converters can convert LP wave into CP wave in a certain frequency band through reflection or transmission [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]; however, the proposed CP-to-LP polarization converter are still very few [17][18][19][20][21][22][23], in Ref. [22] and [23], one broadband and one dual-band CP-to-LP polarization converters have been proposed respectively, but the theoretical analysis of the CP-to-LP polarization conversion was still simple.…”

Section: Introductionmentioning

confidence: 99%

Dual-band and high-efficiency metasurface-based circular-to-linear polarization converter

et al. 2023

Self Cite

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In this paper, to achieve circular-to-linear polarization conversion, a novel polarization converter based on an anisotropic metasurface is proposed. Because the polarization converter is an orthotropic anisotropic structure with a pair of mutually perpendicular symmetric axes u and v, theoretical analysis shows that the polarization converter can achieve circular-to-linear polarization conversion if its reflection phase difference Δφuv under u-polarized and v-polarized incidences is close to ±90°. Numerical simulations show that the reflection phase difference Δφuv of the polarization converter is very close to +90° in two separated frequency ranges, so the polarization converter can achieve high-efficiency and dual-band CP-to-LP polarization conversion, it can convert right-handed circular-polarized (RHCP) and left-handed circular-polarized (LHCP) waves into y-polarized and x-polarized waves respectively in the two separated frequency bands of 8.08–9.27 GHz and 13.80–27.11 GHz; moreover, its polarization conversion rate (PCR) is kept larger than 99.7% in the two frequency bands. Finally, to validate the design, a prototype is manufactured and measured, the measured results are in good agreement with the simulated ones.

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Ultra-wideband Linear-to-Circular and Circular-to-Linear Polarization Conversion Realized by Anisotropic Metasurface

Cited by 8 publications

References 48 publications

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO<sub>2</sub>

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO<sub>2</sub>

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO2

Dual-band and high-efficiency metasurface-based circular-to-linear polarization converter

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