Crosstalk-Free Frequency-Spin Multiplexed Multifunctional Device Realized by Nested Meta-Atoms

ZHANG Ming; DONG Peng; TAO En; YANG Lin; HAN Qi; HE Yuhang; HOU Weimin; LI Kang

doi:10.11999/JEIT251202

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ZHANG Ming, DONG Peng, TAO En, YANG Lin, HAN Qi, HE Yuhang, HOU Weimin, LI Kang. Crosstalk-Free Frequency-Spin Multiplexed Multifunctional Device Realized by Nested Meta-Atoms[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT251202

Citation:

ZHANG Ming, DONG Peng, TAO En, YANG Lin, HAN Qi, HE Yuhang, HOU Weimin, LI Kang. Crosstalk-Free Frequency-Spin Multiplexed Multifunctional Device Realized by Nested Meta-Atoms[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT251202

Citation:

ZHANG Ming, DONG Peng, TAO En, YANG Lin, HAN Qi, HE Yuhang, HOU Weimin, LI Kang. Crosstalk-Free Frequency-Spin Multiplexed Multifunctional Device Realized by Nested Meta-Atoms[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT251202

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Crosstalk-Free Frequency-Spin Multiplexed Multifunctional Device Realized by Nested Meta-Atoms

doi: 10.11999/JEIT251202 cstr: 32379.14.JEIT251202

ZHANG Ming¹,
DONG Peng^{1, 2},
TAO En¹,
YANG Lin¹,
HAN Qi¹,
HE Yuhang¹,
HOU Weimin^{1
,
,},
LI Kang³

1.
School of Information Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
2.
School of Physics, Nankai University, Tianjin 300071, China
3.
Faculty of Integrated Circuit, Xidian University, Xi’an 710003, China

Funds: National Key Research and Development Program of China (No. 2022YFB4400400), National Natural Science Foundation of China (No.62105093 and 62441401), National Key Laboratory of Basic Scientific Research for Innovation Fund (No. IFN20230113), the Major Science and Technology Support Project of Hebei Province (No.24290201Z), Science and Technology Project of Hebei Education Department (No. BJK2023036)

Accepted Date: 2025-12-15
Rev Recd Date: 2025-12-15

Available Online: 2025-12-19

Abstract

Abstract

Objective To address the challenges of high manufacturing costs and signal crosstalk in existing multi-dimensional multiplexed metasurfaces, this study proposes a crosstalk-free, frequency-spin multiplexed single-layer metasurface based on nested bi-spectral meta-atoms. By physically superimposing two C-shaped split-ring resonators targeting the Ku-band (12.5 GHz) and K-band (22 GHz), the design achieves four fully independent information channels (two frequencies and two spin states) without relying on spatial division or multi-layer stacking. The objective is to demonstrate independent, high-performance vortex beam generation and holographic imaging, offering a simplified, low-cost solution for advanced 6G communication and sensing systems. Methods The metasurface employs a reflective metal-dielectric-metal structure where each unit cell nests an outer (OCSRR) and inner (ICSRR) resonator. Through parameter sweeps using CST Microwave Studio, specific structures were selected to ensure high cross-polarization conversion at target frequencies while maintaining negligible response at non-target bands. Independent spin multiplexing is realized by combining transmission phase and geometric phase via controlled resonator rotation. Two prototypes were fabricated using PCB technology: MS1 for generating focused vortex beams (l= +1, +2, +3, +4) and MS2 for holographic imaging (“H”, “B”, “K”, “D”). Performance was validated via near-field scanning measurements under oblique incidence using a vector network analyzer. Results and Discussions Simulations and experimental measurements confirm the excellent frequency selectivity and spin decoupling of the nested design. The OCSRR and ICSRR dictate responses at 12.5 GHz and 22 GHz respectively, behaving as a linear superposition with minimal crosstalk. MS1 successfully generated four focused vortex beams with distinct topological charges, achieving an average mode purity of 88.25%. MS2 reconstructed four independent, clear holographic images with high channel isolation. The close agreement between measured results and simulations verifies the device's robustness and the effectiveness of the crosstalk-free design strategy under practical illumination conditions. Conclusions This work demonstrates a reliable method for constructing crosstalk-free frequency-spin multiplexed metasurfaces using nested meta-atoms. By enabling simultaneous, independent manipulation of electromagnetic waves across four channels on a single layer, the proposed approach significantly reduces design complexity and fabrication costs. The successful realization of multi-channel vortex beams and holography highlights the potential of this technology for integrated, multi-functional applications in next-generation wireless communications and optical systems.
- Metasurface,
- Frequency-spin multiplexing,
- Crosstalk-free,
- Bi-spectral meta-atoms

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References(35)

References

[1]	YU Nanfang, GENEVET P, KATS M A, et al. Light propagation with phase discontinuities: Generalized laws of reflection and refraction[J]. Science, 2011, 334(6054): 333–337. doi: 10.1126/science.1210713.
[2]	KIM T T, KIM H, KENNEY M, et al. Amplitude modulation of anomalously refracted terahertz waves with gated-graphene metasurfaces[J]. Advanced Optical Materials, 2018, 6(1): 1700507. doi: 10.1002/adom.201700507.
[3]	GRADY N K, HEYES J E, CHOWDHURY D R, et al. Terahertz metamaterials for linear polarization conversion and anomalous refraction[J]. Science, 2013, 340(6138): 1304–1307. doi: 10.1126/science.1235399.
[4]	CHEN H T, TAYLOR A J, and YU Nanfang. A review of metasurfaces: Physics and applications[J]. Reports on Progress in Physics, 2016, 79(7): 076401. doi: 10.1088/0034-4885/79/7/076401.
[5]	LI Junhao, LIU Wenwei, XU Haofei, et al. An RGB-achromatic aplanatic metalens[J]. Laser & Photonics Reviews, 2024, 18(4): 2300729. doi: 10.1002/lpor.202300729.
[6]	PENG Yuyan, ZHANG Jiawei, ZHOU Xiongtu, et al. Metalens in improving imaging quality: Advancements, challenges, and prospects for future display[J]. Laser & Photonics Reviews, 2024, 18(4): 2300731. doi: 10.1002/lpor.202300731.
[7]	YANG Hui, OU Kai, WAN Hengyi, et al. Metasurface-empowered optical cryptography[J]. Materials Today, 2023, 67: 424–445. doi: 10.1016/j.mattod.2023.06.003.
[8]	CHEN Chen, LIU Wenyuan, XIAO Likun, et al. Encrypted metasurfaces with inherent asymmetric-like digitized keys under decoupled near-field parameters[J]. Communications Physics, 2025, 8(1): 64. doi: 10.1038/s42005-025-01994-6.
[9]	YIN Yongyao, JIANG Qiang, WANG Hongbo, et al. Multi-dimensional multiplexed metasurface holography by inverse design[J]. Advanced Materials, 2024, 36(21): 2312303. doi: 10.1002/adma.202312303.
[10]	PARK C, JEON Y, and RHO J. 36-channel spin and wavelength co-multiplexed metasurface holography by phase-gradient inverse design[J]. Advanced Science, 2025, 12(28): 2504634. doi: 10.1002/advs.202504634.
[11]	ATALOGLOU V G, TARAVATI S, and ELEFTHERIADES G V. Metasurfaces: Physics and applications in wireless communications[J]. National Science Review, 2023, 10(8): nwad164. doi: 10.1093/nsr/nwad164.
[12]	CHEN Xiaoqing, ZHANG Lei, ZHENG Yining, et al. Integrated sensing and communication based on space-time-coding metasurfaces[J]. Nature Communications, 2025, 16(1): 1836. doi: 10.1038/s41467-025-57137-6.
[13]	IQBAL S, RAJABALIPANAH H, ZHANG Lei, et al. Frequency-multiplexed pure-phase microwave meta-holograms using bi-spectral 2-bit coding metasurfaces[J]. Nanophotonics, 2020, 9(3): 703–714. doi: 10.1515/nanoph-2019-0461.
[14]	XIE Rensheng, XIN Minbo, CHEN Shiguo, et al. Frequency-multiplexed complex-amplitude meta-devices based on bispectral 2-bit coding meta-atoms[J]. Advanced Optical Materials, 2020, 8(24): 2000919. doi: 10.1002/adom.202000919.
[15]	ZHANG Runzhe, GUO Yinghui, ZHANG Fei, et al. Dual-layer metasurface enhanced capacity of polarization multiplexing[J]. Laser & Photonics Reviews, 2024, 18(9): 2400126. doi: 10.1002/lpor.202400126.
[16]	LIU Yu, HUO Xingyuan, XIAO Yutong, et al. Metasurface-based non-orthogonal tri-channel polarization multiplexing for optical encryption[Invited][J]. Optical Materials Express, 2025, 15(3): 565–575. doi: 10.1364/OME.549304.
[17]	XU Hexiu, HU Guangwei, JIANG Menghua, et al. Wavevector and frequency multiplexing performed by a spin-decoupled multichannel metasurface[J]. Advanced Materials Technologies, 2020, 5(1): 1900710. doi: 10.1002/admt.201900710.
[18]	WANG Zhenxu, FU Xinmin, LIANG Jian’gang, et al. Spin-decoupled metasurface by hybridizing curvature- and rotation-induced geometrical phases[J]. Laser & Photonics Reviews, 2024, 18(9): 2400184. doi: 10.1002/lpor.202400184.
[19]	WANG Yue, YAO Zhenyu, CUI Zijian, et al. Orbital angular momentum multiplexing holography based on multiple polarization channel metasurface[J]. Nanophotonics, 2023, 12(23): 4339–4349. doi: 10.1515/nanoph-2023-0550.
[20]	KAMALI S M, ARBABI E, ARBABI A, et al. Angle-multiplexed metasurfaces: Encoding independent wavefronts in a single metasurface under different illumination angles[J]. Physical Review X, 2017, 7(4): 041056. doi: 10.1103/PhysRevX.7.041056.
[21]	CHEN Shuqi, LIU Wenwei, LI Zhancheng, et al. Metasurface-empowered optical multiplexing and multifunction[J]. Advanced Materials, 2020, 32(3): 1805912. doi: 10.1002/adma.201805912.
[22]	ZHU Lei, WEI Jinxu, DONG Liang, et al. Four-channel meta-hologram enabled by a frequency-multiplexed mono-layered geometric phase metasurface[J]. Optics Express, 2024, 32(3): 4553–4563. doi: 10.1364/OE.513920.
[23]	GOU Yue, MA Huifeng, WU Liangwei, et al. Non-interleaved polarization-frequency multiplexing metasurface for multichannel holography[J]. Advanced Optical Materials, 2022, 10(22): 2201142. doi: 10.1002/adom.202201142.
[24]	HE Guoli, ZHENG Yaqin, ZHOU Changda, et al. Multiplexed manipulation of orbital angular momentum and wavelength in metasurfaces based on arbitrary complex-amplitude control[J]. Light: Science & Applications, 2024, 13(1): 98. doi: 10.1038/s41377-024-01420-6.
[25]	LIU Wanying, JIANG Xiaohan, XU Qaun, et al. All-dielectric terahertz metasurfaces for multi-dimensional multiplexing and demultiplexing[J]. Laser & Photonics Reviews, 2024, 18(8): 2301061. doi: 10.1002/lpor.202301061.
[26]	QU Kai, CHEN Ke, HU Qi, et al. Deep-learning-assisted inverse design of dual-spin/frequency metasurface for quad-channel off-axis vortices multiplexing[J]. Advanced Photonics Nexus, 2023, 2(1): 016010. doi: 10.1117/1.apn.2.1.016010.
[27]	XU Hexiu, HU Guangwei, KONG Xianghong, et al. Super-reflector enabled by non-interleaved spin-momentum-multiplexed metasurface[J]. Light: Science & Applications, 2023, 12(1): 78. doi: 10.1038/s41377-023-01118-1.
[28]	SUN Shi, GOU Yue, CUI Tiejun, et al. High-security nondeterministic encryption communication based on spin-space-frequency multiplexing metasurface[J]. PhotoniX, 2024, 5(1): 38. doi: 10.1186/s43074-024-00154-3.
[29]	ZHANG Fei, PU Mingbo, LUO Jun, et al. Symmetry breaking of photonic spin-orbit interactions in metasurfaces[J]. Opto-Electronic Engineering, 2017, 44(3): 319–325. doi: 10.3969/j.issn.1003-501X.2017.03.006.
[30]	DING Guowen, CHEN Ke, LUO Xinyao, et al. Dual-helicity decoupled coding metasurface for independent spin-to-orbital angular momentum conversion[J]. Physical Review Applied, 2019, 11(4): 044043. doi: 10.1103/PhysRevApplied.11.044043.
[31]	BAI Xudong, ZHANG Fuli, SUN Li, et al. Dynamic millimeter-wave OAM beam generation through programmable metasurface[J]. Nanophotonics, 2022, 11(7): 1389–1399. doi: 10.1515/nanoph-2021-0790.
[32]	CHONG Mingzhe, ZHOU Yiwen, ZHANG Zongkun, et al. Generation of polarization-multiplexed terahertz orbital angular momentum combs via all-silicon metasurfaces[J]. Light: Advanced Manufacturing, 2024, 5(3): 38. doi: 10.37188/lam.2024.038.
[33]	JIANG Yuying, LI Shuying, CHEN Xinlei, et al. Frequency-polarization multiplexing reflective metasurface for orbital angular momentum generation[J]. Applied Physics Letters, 2024, 124(22): 221701. doi: 10.1063/5.0207349.
[34]	XU Quan, SU Xiaoqiang, ZHANG Xueqian, et al. Mechanically reprogrammable pancharatnam-berry metasurface for microwaves[J]. Advanced Photonics, 2022, 4(1): 016002. doi: 10.1117/1.AP.4.1.016002.
[35]	ZHAO Fengtao, DONG Peng, LI Kang, et al. Inverse design of terahertz metasurfaces for multi-channel holographic imaging based on the modified gradient descent method[J]. Optics Express, 2025, 33(8): 18005–18016. doi: 10.1364/OE.560396.