Mode division multiplexing based on ring core optical fibers

Jie Liu*, Guoxuan Zhu, Junwei Zhang, Yuanhui Wen, Xiong Wu, Yanfeng Zhang, Yujie Chen, Xinlun Cai, Zhaohui Li, Ziyang Hu, Jiangbo Zhu, Siyuan Yu

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

17 Citations (Scopus)
369 Downloads (Pure)


The unique modal characteristics of ring core fibers (RCFs) potentially enable the implementation of mode-division multiplexing (MDM) schemes that can increase optical data transmission capacity with either low-complexity modular multi-input multi-output (MIMO) equalization or no MIMO equalization. This paper attempts to present a comprehensive review of recent research on the key aspects of RCF-based MDM transmission. Starting from fundamental fiber modal structures, a theoretical comparison between RCFs and conventional step-index and graded-index multi-mode fibers in terms of their MDM capacity and the associated MIMO complexity is given first as the underlining rationale behind RCF-MDM. This is followed by a discussion of RCF design considerations for achieving high-mode channel count and low crosstalk performances in either MIMO-free or modular MIMO transmission schemes. The principles and implementations of RCF mode (de-)multiplexing devices are discussed in detail, followed by RCF-based optical amplifiers culminating in MIMO-free or modular-MIMO RCF-MDM data transmission schemes. A discussion on further research directions is also given.

Original languageEnglish
Article number0700118
Number of pages18
JournalIEEE Journal of Quantum Electronics
Issue number5
Early online date10 Aug 2018
Publication statusPublished - 1 Oct 2018


  • mode-division multiplexing
  • optical communications
  • Ring-core fiber

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