1-Pbps orbital angular momentum fibre-optic transmission

Junyi Liu; Jingxing Zhang; Jie Liu; Zhenrui Lin; Zhenhua Li; Zhongzheng Lin; Junwei Zhang; Cong Huang; Shuqi Mo; Lei Shen; Shuqing Lin; Yujie Chen; Ran Gao; Lei Zhang; Xiaobo Lan; Xinlun Cai; Zhaohui Li; Siyuan Yu

doi:10.1038/s41377-022-00889-3

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1-Pbps orbital angular momentum fibre-optic transmission

Original Articles

- 1-Pbps orbital angular momentum fibre-optic transmission
- 1-Pbps orbital angular momentum fibre-optic transmission
- Light: Science & Applications 2022年11卷第8期页码：1823-1833
- Affiliations：
  
  1.State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou, 510006, China
  2.Yangtze Optical Fibre and Cable Joint Stock Limited Company, State Key Laboratory of Optical Fibre and Cable Manufacture Technology, No.9 Guanggu Avenue, Wuhan, Hubei, China
  3.School of Information and Electronics, Beijing Institute of Technology, Beijing, 100081, China
- Author bio：
  
  Jie Liu (liujie47@mail.sysu.edu.cn)
  Siyuan Yu (yusy@mail.sysu.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00889-3
  中图分类号：
- 纸质出版日期：2022-08-31，
  
  网络出版日期：2022-07-05，
  
  收稿日期：2022-03-20，
  
  修回日期：2022-06-08，
  
  录用日期：2022-06-10
- Accepted：
Scan for full text
Junyi Liu, Jingxing Zhang, Jie Liu, 等. 1-Pbps orbital angular momentum fibre-optic transmission[J]. Light: Science & Applications, 2022,11(8):1823-1833.

Liu, J. Y. et al. 1-Pbps orbital angular momentum fibre-optic transmission. Light: Science & Applications, 11, 1823-1833 (2022).
Junyi Liu, Jingxing Zhang, Jie Liu, 等. 1-Pbps orbital angular momentum fibre-optic transmission[J]. Light: Science & Applications, 2022,11(8):1823-1833. DOI： 10.1038/s41377-022-00889-3.

Liu, J. Y. et al. 1-Pbps orbital angular momentum fibre-optic transmission. Light: Science & Applications, 11, 1823-1833 (2022). DOI： 10.1038/s41377-022-00889-3.

摘要

Abstract

Space-division multiplexing (SDM)

as a main candidate for future ultra-high capacity fibre-optic communications

needs to address limitations to its scalability imposed by computation-intensive multi-input multi-output (MIMO) digital signal processing (DSP) required to eliminate the crosstalk caused by optical coupling between multiplexed spatial channels. By exploiting the unique propagation characteristics of orbital angular momentum (OAM) modes in ring core fibres (RCFs)

a system that combines SDM and C + L band dense wavelength-division multiplexing (DWDM) in a 34 km 7-core RCF is demonstrated to transport a total of 24960 channels with a raw (net) capacity of 1.223 (1.02) Peta-bit s

−1

(Pbps) and a spectral efficiency of 156.8 (130.7) bit s

−1

. Remarkably for such a high channel count

the system only uses fixed-size 4 × 4 MIMO DSP modules with no more than 25 time-domain taps. Such ultra-low MIMO complexity is enabled by the simultaneous weak coupling among fibre cores and amongst non-degenerate OAM mode groups within each core that have a fixed number of 4 modes. These results take the capacity of OAM-based fibre-optic communications links over the 1 Pbps milestone for the first time. They also simultaneously represent the lowest MIMO complexity and the 2nd smallest fibre cladding diameter amongst reported few-mode multicore-fibre (FM-MCF) SDM systems of

1 Pbps capacity. We believe these results represent a major step forward in SDM transmission

as they manifest the significant potentials for further up-scaling the capacity per optical fibre whilst keeping MIMO processing to an ultra-low complexity level and in a modularly expandable fashion.

关键词

Keywords

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