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Related Experiment Video

Updated: Dec 9, 2025

Quasi-light Storage for Optical Data Packets
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Low-chirp push-pull dual-ring modulator with 144 Gb/s PAM-4 data transmission.

Xinru Wu, Binbin Guan, Qianfan Xu

    Optics Express
    |September 10, 2020
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel dual-ring modulator for high-speed optical communication. This device significantly suppresses frequency chirp, enabling efficient 144 Gb/s data transmission over 1 km of fiber.

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    Area of Science:

    • Photonics
    • Optical Communications
    • Integrated Optics

    Background:

    • High-speed optical modulators are crucial for modern data transmission.
    • Frequency chirp in modulators limits data rates and transmission distances.
    • Electromagnetically Induced Transparency (EIT) offers a route to low-chirp modulation.

    Purpose of the Study:

    • To experimentally demonstrate a low-chirp, high-speed push-pull dual-ring modulator.
    • To characterize the static and dynamic performance of the modulator.
    • To evaluate its suitability for high-data-rate transmission.

    Main Methods:

    • Fabrication of a push-pull dual-ring modulator with cascaded add-drop configurations.
    • Utilizing differential drive signals to induce EIT-like resonance shifts.
    • Performing static and dynamic characterization, including chirp parameter measurement.
    • Conducting 144 Gb/s PAM-4 data transmission experiments over standard single-mode fiber.

    Main Results:

    • Successful demonstration of a low-chirp push-pull dual-ring modulator.
    • Suppressed frequency chirp achieved through differential resonance shifting.
    • Demonstrated 144 Gb/s PAM-4 transmission with Bit Error Rate (BER) below the Hard-Decision Forward Error Correction (HD-FEC) threshold.
    • Successful transmission over 1 km of standard single-mode fiber (SSMF) with 7% overhead.

    Conclusions:

    • The developed dual-ring modulator effectively suppresses chirp for high-speed applications.
    • This technology shows promise for next-generation optical communication systems.
    • The device meets stringent performance requirements for advanced data transmission.