中国物理B ›› 2026, Vol. 35 ›› Issue (6): 67802-067802.doi: 10.1088/1674-1056/ae067d

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Wavelength division multiplexing large-aperture multi-order differential metasurface calculator

Liming Wei(魏黎明)1,2, Anting Gao(高安廷)1,2, Junfeng Li(李俊锋)1,2, Wenke Lan(兰文科)1,2, Xilong Liu(刘喜龙)1,2, and Yikai Chen(陈漪恺)1,2,†   

  1. 1 Department of Information Physics and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 Engineering Research Center of Semiconductor Device Optoelectronic Hybrid Integration in Jiangsu Province, Nanjing 210094, China
  • 收稿日期:2025-07-16 修回日期:2025-09-03 接受日期:2025-09-15 发布日期:2026-06-01
  • 通讯作者: Yikai Chen E-mail:ykchen@njust.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11804161), the Open Research Fund of State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology (Grant No. OEIAPT202502), and the Fundamental Research Funds for the Central Universities (Grant Nos. 30923010907 and 2025201010).

Wavelength division multiplexing large-aperture multi-order differential metasurface calculator

Liming Wei(魏黎明)1,2, Anting Gao(高安廷)1,2, Junfeng Li(李俊锋)1,2, Wenke Lan(兰文科)1,2, Xilong Liu(刘喜龙)1,2, and Yikai Chen(陈漪恺)1,2,†   

  1. 1 Department of Information Physics and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 Engineering Research Center of Semiconductor Device Optoelectronic Hybrid Integration in Jiangsu Province, Nanjing 210094, China
  • Received:2025-07-16 Revised:2025-09-03 Accepted:2025-09-15 Published:2026-06-01
  • Contact: Yikai Chen E-mail:ykchen@njust.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11804161), the Open Research Fund of State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology (Grant No. OEIAPT202502), and the Fundamental Research Funds for the Central Universities (Grant Nos. 30923010907 and 2025201010).

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摘要： Optical differentiation is crucial for high-speed image processing, but most optical analog spatial differentiators based on metasurfaces are currently limited to a single type of low-order differentiation operation. We present a dielectric metasurface composed of silicon hollow cylinders that leverages electric quadrupole (EQD) and magnetic dipole (MD) resonances to achieve wavelength-tunable two-dimensional (2D) multi-order differentiation. Specifically, at 1340 nm (MD-dominant), 1140 nm (hybrid EQD-MD), and 1010 nm (EQD-dominant), the metasurface performs second-, fourth-, and sixth-order differentiations, respectively. The device features a 430-nm bandwidth, a maximum numerical aperture of 0.71, and a maximum transmittance of 96%, enabling high-quality edge extraction for complex images. We believe this to be the first integration of wavelength-division multiplexing and multi-order differentiation in a single-layer metasurface, advancing compact and multifunctional optical computing for applications such as autonomous driving and medical imaging.

关键词: optical differential calculation, wavelength division multiplexing, dielectric metasurface

Abstract: Optical differentiation is crucial for high-speed image processing, but most optical analog spatial differentiators based on metasurfaces are currently limited to a single type of low-order differentiation operation. We present a dielectric metasurface composed of silicon hollow cylinders that leverages electric quadrupole (EQD) and magnetic dipole (MD) resonances to achieve wavelength-tunable two-dimensional (2D) multi-order differentiation. Specifically, at 1340 nm (MD-dominant), 1140 nm (hybrid EQD-MD), and 1010 nm (EQD-dominant), the metasurface performs second-, fourth-, and sixth-order differentiations, respectively. The device features a 430-nm bandwidth, a maximum numerical aperture of 0.71, and a maximum transmittance of 96%, enabling high-quality edge extraction for complex images. We believe this to be the first integration of wavelength-division multiplexing and multi-order differentiation in a single-layer metasurface, advancing compact and multifunctional optical computing for applications such as autonomous driving and medical imaging.

Key words: optical differential calculation, wavelength division multiplexing, dielectric metasurface

中图分类号:  (Multilayers; superlattices; photonic structures; metamaterials)

  • 78.67.Pt
42.79.Hp (Optical processors, correlators, and modulators) 42.30.Kq (Fourier optics) 42.30.Va (Image forming and processing)