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SOA-MZI photonic sampler with a post-distortion linearization technique.

Dimitrios Kastritsis, Thierry Rampone, Maeva Franco

    Optics Express
    |October 7, 2021
    PubMed
    Summary
    This summary is machine-generated.

    A new post-distortion linearization technique significantly improves total harmonic distortion (THD) in semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) photonic samplers. This method enhances signal fidelity for both continuous-wave and sinusoidal signals.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Signal Processing

    Background:

    • Semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) devices are crucial for photonic sampling.
    • Non-linear distortions limit the performance of SOA-MZI photonic samplers.
    • Accurate signal reconstruction requires effective distortion mitigation techniques.

    Purpose of the Study:

    • To introduce and evaluate a novel post-distortion linearization technique for SOA-MZI photonic samplers.
    • To assess the effectiveness of the linearization technique in both quasi-static and dynamic sampling regimes.
    • To quantify the improvement in total harmonic distortion (THD) achieved by the proposed method.

    Main Methods:

    • Development of a mathematical model for the post-distortion linearization technique.
    • Experimental evaluation using an active mode-locked laser generating 12.6 ps pulses at 10 GHz.
    • Testing the technique for sampling continuous-wave (quasi-static) and sinusoidal (dynamic) signals.

    Main Results:

    • A significant total harmonic distortion (THD) improvement of 23.4 dB was achieved in the quasi-static regime.
    • The linearization technique demonstrated comparable THD improvements in both quasi-static and dynamic regimes.
    • The technique effectively reduces non-linear distortions in SOA-MZI photonic samplers.

    Conclusions:

    • The presented post-distortion linearization technique offers a viable solution for enhancing SOA-MZI photonic sampler performance.
    • The method provides substantial THD reduction, improving signal fidelity for various signal types.
    • This technique contributes to the advancement of high-performance optical sampling systems.