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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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Analog nonlinear MIMO receiver for optical mode division multiplexing transmission.

Arnaldo Spalvieri, Pierpaolo Boffi, Simone Pecorino

    Optics Express
    |October 24, 2013
    PubMed
    Summary

    This study presents a low-complexity detection scheme for optical transmission systems using mode division multiplexing and multiple-input multiple-output (MIMO) processing. It effectively manages nonlinear crosstalk between fiber modes for improved performance.

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    Area of Science:

    • Optical Communications
    • Signal Processing
    • Photonics

    Background:

    • Digital signal processing complexity and power consumption are key challenges in mode division multiplexing (MDM) optical systems.
    • Coherent multiple-input multiple-output (MIMO) processing at the receiver is crucial for these systems.

    Purpose of the Study:

    • To exploit the spatial separation of fiber modes for joint demultiplexing and detection.
    • To develop a low-complexity, non-adaptive detection scheme for managing nonlinear crosstalk in MDM-MIMO systems.

    Main Methods:

    • Utilizing spatially separated photodetectors for joint demultiplexing and detection.
    • Implementing a non-adaptive detection scheme to address nonlinear crosstalk post-photodetection.

    Main Results:

    • A novel MIMO system architecture leveraging spatial separation of modes was achieved.
    • The proposed low-complexity detection scheme effectively mitigates nonlinear crosstalk between modes.
    • The scheme demonstrated effectiveness in the presented case studies.

    Conclusions:

    • The inherent spatial separation in fiber modes can be leveraged for efficient MDM-MIMO optical systems.
    • Low-complexity, non-adaptive detection is a viable solution for managing nonlinear crosstalk.
    • This approach offers a promising direction for reducing complexity and power consumption in optical transmission.