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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Feature decoupled knowledge distillation enabled lightweight image transmission through multimode fibers.

Fujie Li, Li Yao, Wenqing Niu

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    Summary

    This study introduces a lightweight knowledge distillation framework for high-quality image transmission through multimode fibers (MMF). The method significantly reduces computational complexity while maintaining excellent image quality, enabling efficient data transmission in challenging environments.

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    Area of Science:

    • Optical Communications
    • Machine Learning
    • Image Processing

    Background:

    • Multimode fibers (MMF) offer high-capacity spatial information transmission but are susceptible to scattering and external perturbations.
    • Deep learning models can improve transmission quality but often suffer from high computational complexity.

    Purpose of the Study:

    • To develop a lightweight framework for high-fidelity image transmission through MMF.
    • To reduce the computational complexity of deep learning models used in MMF image transmission.

    Main Methods:

    • Proposed a novel feature decoupled knowledge distillation (KD) framework.
    • Incorporated a frequency-principle-inspired feature decoupled module.
    • Utilized KD to enable a lightweight student model to mimic a sophisticated teacher model.

    Main Results:

    • Achieved averaged Structure Similarity Index Measure (SSIM) of 0.76 (Fashion-MNIST), 0.85 (EMNIST), and 0.90 (MNIST).
    • Reduced model computational complexity by up to 93.4% while maintaining performance close to teacher models.
    • Demonstrated successful application of KD for image transmission through scattering media.

    Conclusions:

    • The proposed KD framework significantly enhances image transmission quality through MMF with reduced complexity.
    • This approach offers a viable solution for high-fidelity image transmission in resource-constrained environments and hardware implementations.
    • Represents a pioneering application of KD for image transmission via scattering media.