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High-SNR OAM mode division multiplexing based on delta-sigma modulation using a power domain layer.

Sihan Wang, Xiaolong Pan, Ran Gao

    Optics Letters
    |July 1, 2025
    PubMed
    Summary

    A novel power domain layered delta-sigma modulation (PDL-DSM) scheme improves orbital angular momentum mode-division multiplexing (OAM-MDM) systems by reducing mode crosstalk. This method enhances signal-to-noise ratio (SNR) for better transmission performance.

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