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High-fidelity sub-petabit-per-second self-homodyne fronthaul using broadband electro-optic combs

Author

Listed:
  • Chenbo Zhang

    (Peking University)

  • Yixiao Zhu

    (Shanghai Jiao Tong University)

  • Jingjing Lin

    (Peking University)

  • Bibo He

    (Peking University)

  • Rongwei Liu

    (Peking University)

  • Yicheng Xu

    (Shanghai Jiao Tong University)

  • Nuo Chen

    (Zhejiang University)

  • Xuanjian He

    (Zhejiang University)

  • Jinming Tao

    (Chinese Academy of Sciences)

  • Zhike Zhang

    (Chinese Academy of Sciences)

  • Tao Chu

    (Zhejiang University)

  • Lilin Yi

    (Shanghai Jiao Tong University)

  • Qunbi Zhuge

    (Shanghai Jiao Tong University)

  • Weiwei Hu

    (Peking University)

  • Zhangyuan Chen

    (Peking University
    Peng Cheng Laboratory)

  • Weisheng Hu

    (Shanghai Jiao Tong University
    Peng Cheng Laboratory)

  • Xiaopeng Xie

    (Peking University)

Abstract

With the exponential growth in data density and user ends of wireless networks, fronthaul is tasked with supporting aggregate bandwidths exceeding thousands of gigahertz while accommodating high-order modulation formats. However, it must address the bandwidth and noise limitations imposed by optical links and devices in a cost-efficient manner. Here we demonstrate a high-fidelity fronthaul system enabled by self-homodyne digital-analog radio-over-fiber superchannels, using a broadband electro-optic comb and uncoupled multicore fiber. This self-homodyne superchannel architecture not only offers capacity boosting but also supports carrier-recovery-free reception. Our approach achieves a record-breaking 15,000 GHz aggregated wireless bandwidth, corresponding to a 0.879 Pb/s common public radio interface (CPRI) equivalent data rate. Higher-order formats up to 1,048,576 quadrature-amplitude-modulated (QAM) are showcased at a 100 Tb/s class data rate. Furthermore, we employ a packaged on-chip electro-optic comb as the sole optical source to reduce the cost, supporting a data rate of 100.5 Tb/s with the 1024-QAM format. These demonstrations propel fronthaul into the era of Pb/s-level capacity and exhibit the promising potential of integrated-photonics implementation, pushing the boundaries to new heights in terms of capacity, fidelity, and cost.

Suggested Citation

  • Chenbo Zhang & Yixiao Zhu & Jingjing Lin & Bibo He & Rongwei Liu & Yicheng Xu & Nuo Chen & Xuanjian He & Jinming Tao & Zhike Zhang & Tao Chu & Lilin Yi & Qunbi Zhuge & Weiwei Hu & Zhangyuan Chen & Wei, 2024. "High-fidelity sub-petabit-per-second self-homodyne fronthaul using broadband electro-optic combs," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51103-4
    DOI: 10.1038/s41467-024-51103-4
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    References listed on IDEAS

    as
    1. Mian Zhang & Brandon Buscaino & Cheng Wang & Amirhassan Shams-Ansari & Christian Reimer & Rongrong Zhu & Joseph M. Kahn & Marko Lončar, 2019. "Broadband electro-optic frequency comb generation in a lithium niobate microring resonator," Nature, Nature, vol. 568(7752), pages 373-377, April.
    2. Pablo Marin-Palomo & Juned N. Kemal & Maxim Karpov & Arne Kordts & Joerg Pfeifle & Martin H. P. Pfeiffer & Philipp Trocha & Stefan Wolf & Victor Brasch & Miles H. Anderson & Ralf Rosenberger & Kovendh, 2017. "Microresonator-based solitons for massively parallel coherent optical communications," Nature, Nature, vol. 546(7657), pages 274-279, June.
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