少模掺铒光纤放大器的增益性能调控研究进展(特邀)  

Gain Performance Regulation of Few-Mode Erbium-Doped Fiber Amplifier(Invited)

作　　者：秦玉文 王悦 张聪 曾研 方翼鸿 许鸥[1,2,3] 付松年 Qin Yuwen;Wang Yue;Zhang Cong;Zeng Yan;Fang Yihong;Xu Ou;Fu Songnian(Institute of Advanced Photonics Technology,School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Key Laboratory of Photonic Technology for Integrated Sensing and Communication,Ministry of Education,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Guangdong Provincial Key Laboratory of Information Photonics Technology,Guangdong University of Technology,Guangzhou 510006,Guangdong,China)

机构地区：[1]广东工业大学信息工程学院先进光子技术研究院,广东广州510006 [2]广东工业大学通感融合光子技术教育部重点实验室,广东广州510006 [3]广东工业大学广东省信息光子技术重点实验室,广东广州510006

出　　处：《光学学报(网络版)》2024年第2期4-19,共16页Acta Optica Sinica(Online)

基　　金：国家重点研发计划(2018YFB1801000);国家自然科学基金(62305071);中国博士后科学基金(2023M740747);广东省基础与应用基础研究自然科学基金(2024A1515012302);广东省“珠江人才计划”引进创新创业团队(2021ZT09X044)

摘　　要：少模掺铒光纤放大器是实现长距离、大容量模分复用光传输的核心器件。多波长模分复用信号经过少模掺铒光纤放大器后,不同模式的信道将产生不同的增益,如波长相关增益、模式相关增益,最终导致模分复用通信系统的扩容性能下降。本文系统地阐述了少模掺铒光纤放大器中模式相关增益的产生机理与调控策略,对不同的增益调控策略进行性能对比,最后对多波长大模式数目下的研究挑战进行了展望。A few-mode erbium-doped fiber amplifier(FM-EDFA)is a key device for realizing long-haul and high-capacity mode-division multiplexing(MDM)transmission.However,different mode channels across a wide wavelength band generate both mode-dependent and wavelength-dependent gains,leading to differential mode gain(DMG)over the wavelength span.This severely constrains the capacity enhancement of MDM transmission systems.In this study,we provide a comprehensive review of recent progress in the gain regulation of FM-EDFA.We systematically discuss the generation mechanism of DMG and its optimization strategies.The performance of DMG under various regulation schemes is then presented.Finally,we explore the research challenges related to DMG equalization under conditions of higher mode counts and wavelength-division multiplexing(WDM)transmission.

关 键 词：模分复用 少模掺铒光纤放大器 差分模式增益 增益均衡 

分 类 号：O436[机械工程—光学工程]