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Related Experiment Video

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Phase imaging through a single multimode fiber.

Quanzhi Li, Zhong Wen, Qilin Deng

    Optics Letters
    |October 15, 2024
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new phase imaging microscopy technique using a single multimode fiber (MMF). The method provides high-contrast, label-free imaging and quantitative 3D shape reconstruction for biological specimens in vivo.

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    Area of Science:

    • Biomedical Optics
    • Microscopy
    • Fiber Optics

    Background:

    • Phase imaging is crucial for visualizing unstained biological samples.
    • Traditional methods are limited in narrow spaces.
    • Multimode fiber (MMF) shows potential for in vivo endoscopy.

    Purpose of the Study:

    • To develop a novel phase imaging microscopy technique using a single MMF.
    • To achieve high-contrast imaging and quantitative shape reconstruction.
    • To enable label-free, in vivo phase imaging in confined spaces.

    Main Methods:

    • Frequency-domain modulation for phase imaging.
    • Utilized a single multimode fiber (MMF) for light delivery and collection.
    • Validated against reflection and phase-contrast microscopy.

    Main Results:

    • Demonstrated high-contrast imaging of diverse samples (microspheres, chips, cells).
    • Achieved quantitative surface shape reconstruction with <100 nm sensitivity.
    • Extracted 3D information from single focal plane images.
    • Showcased enhanced contrast and background suppression.

    Conclusions:

    • The novel MMF-based phase imaging technique offers high-contrast, label-free visualization.
    • Enables quantitative 3D shape reconstruction with high sensitivity.
    • Presents a promising tool for minimally invasive in vivo imaging.