多泵浦光纤拉曼放大器增益平坦性研究

Research on the Gain Flatness of Fiber Raman Amplifiers Using Multi-wavelength Pumps

针对掺铒光纤放大器的增益竞争特性,在Rsoft公司提供的仿真平台上搭建了长距离分布式多泵浦光纤拉曼放大器实验模型。在分析泵浦光与泵浦光、泵浦光与信号光的拉曼相互作用的基础上,仿真过程中还充分考虑瑞利散射、自发散射以及信号光传输过程中非线性的影响,分别对它的前向与后向泵浦功率分配、泵浦间隔分布、等间隔泵浦功率分配进行了优化,并在国家建议标准中的8信道带宽内得到了增益波动最小的配置规律。

Towards the gain competition character of erbium-doped fiber amplifier, the simulation experiment of the muti-pump distributed Raman amplifiers used for long haul system. With pump-to-signal and pump-to-pump Raman scattering considered, Raleigh scattering, amplified spontaneous scattering and fiber nonlinearity in transmission are taken into account. The optimum scheme of forward and backward pump optical power distribution, pump interval and pump optical power distribution for equal pump interval is based. According to the suggested 8-channel standard of the country, a simple distribution law for the lowest gain ripple is achieved.