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

被引：1
|
作者：
Zuo, Mingqing [1 ]
Liu, Jiaxin [1 ]
Qiao, Gang [1 ]
Shen, Lei [2 ]
Gao, Yuyang [1 ]
Ge, Dawei [3 ]
He, Yongqi [1 ]
Chen, Zhangyuan [1 ]
Li, Juhao [1 ]
机构：
[1] Peking Univ, Dept Elect, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China
[2] Yangtze Opt Fiber & Cable Joint Stock Ltd Co, Wuhan 430073, Peoples R China
[3] China Mobile Res Inst, Dept Fundamental Network Technol, Beijing 100053, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2022年 / 14卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Monitoring; Optical fibers; Optical receivers; Optical polarization; Optical device fabrication; Optical crosstalk; Optical fiber polarization; Optical performance monitoring; mode-division multiplexing; weakly-coupled few-mode fiber; intra-LP-mode dispersion; IMPULSE-RESPONSE FILTERS; MDM-WDM TRANSMISSION; POLARIZATION DISPERSION; FIBERS;
D O I：
10.1109/JPHOT.2021.3138799
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
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收藏
页数：6
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