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  • Chinese Optics Letters
  • Vol. 22,
  • Issue 4,
  • pp. 040604-
  • (2024)

Low-cost, large-coverage, and high-flexibility coherent PON for next-generation access networks: advances, challenges, and prospects [Invited]

Sizhe Xing, Junwen Zhang, Wangwei Shen, An Yan, Guoqiang Li, Aolong Sun, Ji Zhou, Dong Guo, Jianyang Shi, Ziwei Li, Chao Shen, and Nan Chi

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Abstract

Increasing bandwidth requirements have posed significant challenges for traditional access networks. It is difficult for intensity modulation/direct detection to meet the power budget and flexibility requirements of the next-generation passive optical network (PON) at 100G and beyond considering the new requirements. This is driving researchers to develop novel optical access technologies. Low-cost, wide-coverage, and high-flexibility coherent PON is emerging as a strong contender in the competition. In this article, we will review technologies that reduce the complexity of coherent PON (CPON), enabling it to meet the commercial requirements. Also, advanced algorithms and architectures that can enhance system coverage and flexibility are also discussed.

© 2024 Chinese Laser Press

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