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Quad-fold parallel all-optical imaging processing empowered by meta-optics multiplexing
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DOI：10.1016/j.optlastec.2026.114962.png)
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Abstract
En 中文
Image processing, a crucial technology evolving at a rapid pace, has exhibited extensive potential in such application areas as biological imaging, digital reconstruction, and autonomous driving. Metasurfaces, owing to their ability to engineer optical wavefronts at subwavelength scale, offer a promising avenue for optical analog computing. However, most reported approaches remain confined to a single image processing functionality, restricting scalability and versatility. Here, we propose a metasurface-based parallel optical computing system that achieves multiple independent image processing operations. By embedding spiral phase profiles and convolution-inspired operators into the metasurface design, and harnessing both Pancharatnam-Berry phase and propagation phase control, distinct image processing channels can be independently triggered by specific wavelength and polarization states. Utilizing this approach, a single device is employed to demonstrate four image processing functions. This compact metasurface-based system, enabling parallel computing with multi-functional image processing, may open new opportunities for medical imaging, large-scale computational vision, and next-generation intelligent sensing.
Keywords:
metasurface
optical computing
image processing
parallel processing
meta-optics
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