Study of a metasurface-based multi-functional polarization converter for large incident angles

M. Wang; D. D. Wen; Z. H. Li; K. Song

doi:10.1117/12.2604198

13 December 2021 Study of a metasurface-based multi-functional polarization converter for large incident angles

M. Wang, D. D. Wen, Z. H. Li, K. Song

Proceedings Volume 12074, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Novel Optoelectronic Functional Materials and Devices; 120740D (2021) https://doi.org/10.1117/12.2604198
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China

Abstract

In the paper, we propose a multi-functional microwave device to realize the polarization conversion of transport waves based on the anisotropic metasurface which is composed of a series of flower-liked unit cells separated by air space. The simulation results show that the metasurface would convert the polarization state of the incident electromagnetic wave to the cross-polarization state in the frequency region of 7.2~8.8 GHz and the linear polarization (LP) state to circular polarization (CP) state from 8.8 GHz to 11.1 GHz. The conversion efficiency of cross-polarization conversion (CPC) for LP wave is larger than 0.9 even for the incident angle of 85°, except for the narrower bandwidth. While the LP incident can efficiently convert to CP transmission wave for incident angle below 60°. The outstanding angular stability is originated from the symmetrical configuration of the designed unit cell. Additionally, the influences of structural parameters on the polarization conversion are studied in detail.

Citation Download Citation

M. Wang, D. D. Wen, Z. H. Li, and K. Song "Study of a metasurface-based multi-functional polarization converter for large incident angles", Proc. SPIE 12074, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Novel Optoelectronic Functional Materials and Devices, 120740D (13 December 2021); https://doi.org/10.1117/12.2604198

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KEYWORDS

Polarization

Compound parabolic concentrators

Transmittance

Metals

Capacitors

Microwave radiation

Split ring resonators

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