面向6G的拉曼微结构光纤放大器设计  

Design of Raman microstructure fiber amplifier for 6G

作　　者：巩稼民 刘芳 吴艺杰 朱泽昊 雷舒陶 张运生 GONG Jia-min;LIU Fang;WU Yi-jie;ZHU Ze-hao;LEI Shu-tao;ZHANG Yun-sheng(School of electronic and information engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China;School of communication and information engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121 [2]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《光电子．激光》2021年第3期310-316,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61775180);国际科技合作计划项目陕西省重点研发计划(2020KWZ-017)资助项目。

摘　　要：为了满足6G系统对未来光通信网络的要求,利用掺GeO2微结构光纤设计了一种多泵浦拉曼光纤放大器,该方案能够解决适用于6G系统需求的拉曼光纤放大器中谱宽窄、输出增益低且不平坦的问题。在理论上,运用四阶龙格-库塔法对经典拉曼耦合波微分方程进行求解;在结构上,通过合并两对具有相同波长的泵浦光,来减少泵浦个数、简化结构,同时采用级联两段微结构光纤的方法,使信号光增益在拉曼放大器的输出端实现前放大,后补偿。实验结果表明,在100 nm的谱宽范围内,放大器的平均增益高达35.72 dB,增益波动小于±0.43 dB。A Raman fiber amplifier with multi pump and GeO2 doped microstructure fiber is designed to fulfil the requirements of 6 G transmission system for optical communication network which can solve the problems of narrow band width,low output gain and uneven output gain of Raman fiber amplifier suitable for 6 G system.In theory,using the fourth-order Runge-Kutta method is to solve the classical Raman coupled wave differential equations;in the structure,two pairs of pump beams with the same wavelength are combined to reduce the number of pumps and simplify the structure.At the same time,the method of cascading two sections of microstructured fiber is used to realize the signal gain amplification before and after compensation at the output end of the Raman amplifier.Finally,the average gain of the amplifier is up to 35.72 dB in the bandwidth of 100 nm,and the gain fluctuation is less than±0.43 dB.

关 键 词：拉曼放大器 掺GeO2微结构光纤 级联光纤 增益平坦度 

分 类 号：TN929.11[电子电信—通信与信息系统]