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Photonic-lantern-based coherent LIDAR system.

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    Summary
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    This study demonstrates a photonic-lantern coherent LIDAR system, achieving a 2.8x voltage signal-to-noise ratio (SNR(V)) improvement over single-mode receivers. Random optical power distribution had minimal impact on this significant enhancement.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Laser Technology

    Background:

    • Coherent LIDAR systems are crucial for remote sensing applications.
    • Single-mode coherent receivers face limitations in signal-to-noise ratio (SNR).
    • Photonic lanterns offer potential for improved optical signal processing.

    Purpose of the Study:

    • To experimentally demonstrate a photonic-lantern-based coherent LIDAR system.
    • To quantify the voltage signal-to-noise ratio (SNR(V)) improvement offered by this new system.
    • To analyze the impact of optical power distribution on system performance.

    Main Methods:

    • Experimental setup of a photonic-lantern-based coherent LIDAR system.
    • Comparative analysis of SNR(V) between photonic-lantern and single-mode coherent receivers.
    • Investigation of random optical power distribution effects on SNR(V).

    Main Results:

    • A voltage signal-to-noise ratio (SNR(V)) improvement of 2.8 was experimentally achieved.
    • The photonic-lantern system demonstrated superior performance compared to single-mode receivers.
    • Random optical power distribution among single-mode fibers showed no significant impact on SNR(V) improvement, with a mean improvement of ~2.4.

    Conclusions:

    • Photonic-lantern-based coherent LIDAR systems offer a significant advancement in SNR(V) performance.
    • This technology provides a robust solution for applications requiring high-fidelity remote sensing.
    • The system's performance is reliable even with variations in optical power distribution.