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Related Experiment Video

Updated: Oct 26, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Large-scale true-time-delay remote beamforming with EO frequency combs and multicore fiber.

Chenbo Zhang, Peng Lei, Rongwei Liu

    Optics Letters
    |July 30, 2021
    PubMed
    Summary

    We demonstrate a record 287-channel optical true-time-delay (OTTD) beamforming network using electro-optic frequency combs and multicore fiber for 5G and beyond networks. This approach significantly enhances channel capacity and stability for remote radio units.

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    Area of Science:

    • Photonics and Optical Communications
    • Wireless Network Engineering

    Background:

    • Optical true-time-delay (OTTD) beamforming is crucial for ultra-broadband radio access networks.
    • Scaling OTTD systems to support large-scale remote antenna arrays presents significant channel number challenges.

    Purpose of the Study:

    • To demonstrate a high-channel-count OTTD remote beamforming network.
    • To investigate the use of multicore fiber for increased channel capacity and improved stability.

    Main Methods:

    • Utilized electro-optic frequency combs to generate multiple optical signals.
    • Employed multicore fiber to transmit a record 287 channels for remote beamforming.
    • Evaluated the long-term stability of the proposed network.

    Main Results:

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    Related Experiment Videos

    Last Updated: Oct 26, 2025

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
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    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.3K
    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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    Quasi-light Storage for Optical Data Packets
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    Quasi-light Storage for Optical Data Packets

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    • Achieved a record 287-channel number for an OTTD remote beamforming network.
    • Demonstrated beam generation for both 1D and 2D antenna arrays.
    • Obtained 1-ps-level relative time delay variation over 2 hours using multicore fiber, an order of magnitude improvement over single-mode fibers.

    Conclusions:

    • The proposed OTTD remote beamforming network effectively scales channel numbers using multicore fiber.
    • Multicore fiber enhances both channel capacity and long-term stability for remote beamforming.
    • These advancements are vital for the practical application of OTTD beamforming in 5G and future wireless networks.