高增益二级双程L波段扩展掺铒光纤放大器  

Extended L-Band Erbium-Doped Fiber Amplifier with High Gain Using Two-Stage Double-Pass Configuration

作　　者：阮继宇 劳浩贤 林漫冰 钟力 汪松 董新永 Ruan Jiyu;Lao Haoxian;Lin Manbing;Zhong Li;Wang Song;Dong Xinyong(Institute of Advanced Photonics Technology,School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Guangdong Provincial Key Laboratory of Information Photonics Technology,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;State Key Laboratory of Optical Fiber and Cable Manufacture Technology,Yangtze Optical Fibre and Cable Joint Stock Limited Company(YOFC),Wuhan 430073,Hubei,China;Key Laboratory of Photonic Technology for Integrated Sensing and Communication,Ministry of Education,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]广东工业大学广东省信息光子技术重点实验室,广东广州510006 [3]长飞光纤光缆股份有限公司光纤光缆先进制造与应用技术全国重点实验室,湖北武汉430073 [4]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

出　　处：《光学学报》2023年第22期136-141,共6页Acta Optica Sinica

基　　金：国家重点研发计划(2020YFB1805804);广东省引进创新创业团队项目(2019ZT08X340)。

摘　　要：近年来,L波段扩展掺铒光纤放大器(EDFA)由于能覆盖更宽的波长范围而备受关注,但其增益水平普遍较低。本文采用1480 nm激光泵浦Er/Yb/P共掺光纤,结合双程放大和预放大技术,研制了高增益的L波段扩展EDFA。实验装置在1556~1621 nm的65 nm范围内获得高于20 dB的增益,最大增益达48.8 dB(1566 nm),30 dB增益带宽达58 nm(1558~1616 nm),噪声系数在1580~1610 nm范围内低于5.8 dB。该研究工作有效提高了L波段扩展EDFA的增益水平,并将噪声系数控制在较低的范围,可有效提升常规光纤通信系统的传输带宽和容量。Objective Due to the increasing demand for information transmission capacity,traditional wavelength-division multiplexing(WDM)optical fiber transmission technology cannot meet the requirements of communication technology advancement.In recent years,L-band extended erbium-doped fiber amplifiers(L-EDFAs)have become a research hotspot due to their ability to cover a wider wavelength range,enabling the transmission of more wavelength channels and thus a larger information amount.Consequently,this type of device has caught significant research attention.However,the initial research on L-EDFAs often results in relatively low gain levels,which could not satisfy the requirements for transmitting large information amounts.Thus,we propose a solution that may achieve high-gain and low-noise LEDFAs.Experimental results demonstrate that the proposed L-EDFA outperforms similar devices in other references.This advancement could provide a foundation for further research,potentially leading to the industrialization of such devices.The proposed solution has promising prospects for meeting the growing demand for high-performance optical amplification in L-band applications.Methods By utilizing 1480 nm lasers to pump Er/Yb/P co-doped fiber and incorporating double-pass amplification and pre-amplification technologies,an enhanced L-EDFA is developed.Ytterbium(Yb)ions and phosphorus(P)ions are initially introduced into the erbium-doped fiber to mitigate excited state absorption(ESA)of erbium ions in the longer wavelengths of the L-band,extending the L-band for the EDFA.Subsequently,a two-stage double-pass experimental setup for the L-EDFA is implemented to further enhance its gain.This experimental arrangement comprises a main amplifier and a pre-amplifier cascaded through a circulator to form a two-stage amplification structure.Once amplified through a single pass,the signal light is reflected to the main amplifier for secondary amplification.The initial testing involves evaluating the single-pass and double-pass amplification perfor

关 键 词：激光器 L波段掺铒光纤放大器 光纤放大器 光纤通信 

分 类 号：TN929.11[电子电信—通信与信息系统] TN722[电子电信—信息与通信工程]