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Robustness of spatial-coherence multiplexing under receiver misalignment.

L J Pelz, B L Anderson

    Applied Optics
    |February 13, 2008
    PubMed
    Summary
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    Spatial coherence multiplexing offers a new dimension for high-speed optical communications. This study demonstrates its robustness against receiver misalignment and variations in transverse modes, ensuring reliable system operation.

    Area of Science:

    • Optics and Photonics
    • Optical Communications

    Background:

    • Spatial coherence modulation/demodulation can enable a new multiplexing dimension in optical communications.
    • Investigating system sensitivity to receiver misalignment is crucial for practical applications.

    Purpose of the Study:

    • To assess the sensitivity of spatial coherence multiplexing systems to receiver misalignments.
    • To examine the impact of changing transverse modes on lateral spatial coherence.

    Main Methods:

    • Analysis of system performance under lateral receiver offsets.
    • Evaluation of system performance under rotational receiver offsets.
    • Investigation of the effect of higher-order transverse modes on spatial coherence.

    Main Results:

    Related Experiment Videos

    • The spatial coherence multiplexing system demonstrates surprising robustness to lateral receiver offsets.
    • Rotational offsets of the receiver with respect to the spatial coherence modulation plane have minimal impact.
    • Variations in the transverse mode structure, including higher-order modes, show little effect on system operation.

    Conclusions:

    • Spatial coherence multiplexing is a resilient technology for high-speed optical communication.
    • The system's tolerance to misalignment and mode variations simplifies receiver design and enhances practical viability.