抽运功率配置对双向喇曼放大器性能的影响

为了研究抽运功率配置对双向抽运光纤喇曼放大器性能的影响,基于已有的耦合方程,采用数值仿真方法,分析了不同抽运功率配置对双向抽运光纤喇曼放大器的增益、增益饱和以及抽运功率转换效率的影响。结果表明,双向抽运光纤喇曼放大器的增益、增益饱和以及抽运功率转换效率特性均介于同向和反向抽运光纤喇曼放大器之间,并且随着同向抽运功率在抽运总功率中所占比例的升高,增益、增益饱和功率和抽运功率转换效率的数值增加;大信号、抽运功率较大时,抽运功率配置对双向抽运光纤喇曼放大器性能的影响显著。这对双向抽运光纤喇曼放大器和光纤激光研究具有一定的参考价值。

Effect of pump power deployment on bi-directional pumping fibre Raman amplifiers

To study effect of pump power deployment on bi-directional pumping fibre Raman amplifiers(FRA), the gain, gain saturation and power conversion efficiency under different pump power deployment were calculated based on the known coupling equations. The simulation results show that the gain, gain saturation and power conversion efficiency are all between the values of forward-pumped and backward-pumped FRAs and they increase when forward pump power is larger. The phenomenon becomes evident with all the pump power and initial signal power increases. The conclusion gives some advice for the work of FRA and fibre laser.