面向6G的拉曼微结构光纤放大器设计

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。

Design of Raman microstructure fiber amplifier for 6G

A Raman fiber amplifier with multi pum p and GeO2doped microstructure fiber is designed to fulfil the requirements of 6G transmission system for optical communication network which can solve the pro blems of narrow band width,low output gain and uneven output gain of Raman fiber amplifier suitable for 6G 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 r educe 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 signa l gain amplification before and after compensation at the output end of the Rama n amplifier.Finally,the average gain of the amplifier is up to 35.72dB in the b andwidth of 100nm,and the gain fluctuation is less than±0.43dB.