Sub-diffraction computational imaging via a flexible multicore-multimode fiber

doi:10.1364/OE.481052

Sub-diffraction computational imaging via a flexible multicore-multimode fiber

2023-03-20

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DOI：10.1364/OE.481052

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An ultra-thin multimode fiber is an ideal platform for minimally invasive microscopy with the advantages of a high density of modes, high spatial resolution, and a compact size. In practical applications, the probe needs to be long and flexible, which unfortunately destroys the imaging capabilities of a multimode fiber. In this work, we propose and experimentally demonstrate sub-diffraction imaging through a flexible probe based on a unique multicore-multimode fiber. A multicore part consists of 120 Fermat's spiral distributed single-mode cores. Each of the cores offers stable light delivery to the multimode part, which provides optimal structured light illumination for sub-diffraction imaging. As a result, perturbation-resilient fast sub-diffraction fiber imaging by computational compressive sensing is demonstrated.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

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LIGHT

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Sub-diffraction computational imaging via a flexible multicore-multimode fiber

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