Tailoring Group Delay Dispersion of Spatial Phaser using Anisotropic Metasurface and Polarized Incident Waves

Jiang, Xiaonan1; Liu, Baiyang1; Xu, Wentao1; Rashid, Amir Khurrum1; Shao, Liyang1; Yu, Ming1; Wang, Hong2; Cheng, Qiang3; Cui, Tie Jun3; Zhang, Qingfeng1

2023-04-01

10.1002/adom.202202844

ADVANCED OPTICAL MATERIALS   影响因子和分区

2195-1071

Metasurface-based spatial phaser, exhibiting dispersive group delay responses, is able to perform real-time analogue signal processing on the temporal spectrum of spatial electromagnetic waves, e.g., Fourier transformation, pulse chirping, pulse spread, and compression. The functionality of a spatial phaser is closely related to its group delay dispersion slope. For instance, for an up-chirped incident pulse, the positive-slope-dispersion phaser spreads the pulse whereas the negative-slope-dispersion one compresses the pulse. Most reported spatial phasers exhibit fixed dispersion slopes and hence perform single functionality only, which cannot meet the demand of multifunctional systems in communication and sensing applications. In this paper, a new way is proposed to control and tune the dispersion slope of spatial phasers using polarization of incident waves, which is simpler and more efficient than conventional approaches based on tunable circuits. To verify the proposed method, a first-order spatial phaser is designed and experimentally demonstrated within 9.4-10.6 GHz. It is able to generate negative-slope, positive-slope, and zero-slope group delay dispersions, in case of x-, y-, and +/- 45 degrees-polarized waves. Such a reconfigurable phaser may find wide applications in integrated communication and sensing.

analogue signal processing anisotropic metasurfaces group delay spatial phaser

SCI ; EI

英语

第一 ; 通讯

NSFC[61871207] ; Guangdong Basic and Applied Basic Research Foundation[2021B1515120029] ; Shenzhen Key Laboratory of EM Information[ZDSYS20210709113201005] ; National Key R&D Program of China["2022YFB2803500","2021YFA1003400"]

Materials Science ; Optics

Materials Science, Multidisciplinary ; Optics

WOS:000962031700001

WILEY-V C H VERLAG GMBH

20231513870737

Anisotropy ; Dispersion (waves) ; Electromagnetic waves ; Fourier transforms ; Signal processing

Electric Networks:703.1 ; Electromagnetic Waves:711 ; Information Theory and Signal Processing:716.1 ; Mathematical Transformations:921.3 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen Key Lab EM Informat, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 211189, Peoples R China

Jiang, Xiaonan,Liu, Baiyang,Xu, Wentao,et al. Tailoring Group Delay Dispersion of Spatial Phaser using Anisotropic Metasurface and Polarized Incident Waves[J]. ADVANCED OPTICAL MATERIALS,2023,11(10).

Jiang, Xiaonan.,Liu, Baiyang.,Xu, Wentao.,Rashid, Amir Khurrum.,Shao, Liyang.,...&Zhang, Qingfeng.(2023).Tailoring Group Delay Dispersion of Spatial Phaser using Anisotropic Metasurface and Polarized Incident Waves.ADVANCED OPTICAL MATERIALS,11(10).

Jiang, Xiaonan,et al."Tailoring Group Delay Dispersion of Spatial Phaser using Anisotropic Metasurface and Polarized Incident Waves".ADVANCED OPTICAL MATERIALS 11.10(2023).