期刊
IEEE JOURNAL OF QUANTUM ELECTRONICS
卷 54, 期 5, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2018.2864561
关键词
Ring-core fiber; mode-division multiplexing; optical communications
资金
- Natural Science Foundation of China (NSFC) through the Major Research Project [61490715]
- NSFC-Guangdong Joint Program [U1701661]
- Local Innovative and Research Team Project of the Guangdong Pearl River Talents Program [2017BT01X121]
- Chinese Ministry of Science and Technology through the 973 Project [2014CB340000]
- EU H2020 under Grant ROAM
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.
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