Optical Performance Monitoring for Intra-LP-Mode Dispersion in Weakly-Coupled Mode-Division Multiplexed Systems

Mingqing Zuo; Jiaxin Liu; Gang Qiao; Lei Shen; Yuyang Gao; Dawei Ge; Yongqi He; Zhangyuan Chen; Juhao Li

doi:10.1109/jphot.2021.3138799

IEEE Photonics Journal (Jan 2022)

Optical Performance Monitoring for Intra-LP-Mode Dispersion in Weakly-Coupled Mode-Division Multiplexed Systems

Mingqing Zuo,
Jiaxin Liu,
Gang Qiao,
Lei Shen,
Yuyang Gao,
Dawei Ge,
Yongqi He,
Zhangyuan Chen,
Juhao Li

Affiliations

Mingqing Zuo: State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China
Jiaxin Liu: State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China
Gang Qiao: State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China
Lei Shen: Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan, China
Yuyang Gao: ORCiD; State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China
Dawei Ge: ORCiD; Department of Fundamental Network Technology, China Mobile Research Institute, Beijing, China
Yongqi He: State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China
Zhangyuan Chen: ORCiD; State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China
Juhao Li: ORCiD; State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing, China

DOI: https://doi.org/10.1109/jphot.2021.3138799
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 6

Abstract

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Weakly-coupled mode-division multiplexing (MDM) technique based on linearly-polarized (LP) modes in ultralow-modal-crosstalk few-mode fiber (FMF) has been considered as a promising candidate for capacity enhancement of next-generation optical transmission systems. Similar to polarization mode dispersion in single-mode fibers (SMFs), signals in weakly-coupled FMFs suffer from the impacts of intra-LP-mode dispersion (ILMD) for both degenerate and non-degenerate LP modes.In this paper, we propose an effective method for ILMD monitoring in weakly-coupled MDM systems. The ILMD evaluation method for degenerate LP modes is designed by the analysis of channel transfer matrix in a digital coherent receiver. Then the ILMD monitoring scheme is experimentally validated for all the 6 LP mods in a weakly-coupled FMF. The influences of chromatic dispersion, optical signal to noise ratio and inter-LP-mode crosstalk to the method are also investigated.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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