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arXiv · 2412.13531

Multiplexed Metasurfaces for Diffractive Optics via Phase Correlation Method

Chenxuan Xiang·Jumin Qiu·Qiegen Liu·Shuyuan Xiao·Tingting Liu
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Abstract

The multiplexing capability of metasurfaces has been successfully demonstrated in applications such as holography and diffractive neural networks. However, identifying a suitable structure that simultaneously satisfies the phase requirements across multiple channels remains a significant challenge in many multiplexing design scenarios. In this study, we propose an innovative phase correlation method for metasurface multiplexing design that utilizes a multi-layer perceptron to establish phase correlations across multiple channels. This approach reduces the difficulty of multi-channel phase training by converting it into a simpler single-channel optimization task, thereby reducing design complexity and computational cost. Using the proposed method, we design a dual-wavelength multiplexed diffractive neural network and a multi-wavelength metasurface color holography under a linear polarization. The designed multiplexed metasurface achieves up to 90% classification accuracy in image recognition and exhibits good performance in color holography.

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Chenxuan Xiang, Jumin Qiu, Qiegen Liu, Shuyuan Xiao, Tingting Liu. 2024-12-18. Multiplexed Metasurfaces for Diffractive Optics via Phase Correlation Method. https://doi.org/10.1364/ol.553470

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