中文摘要：

基于光纤中受激喇曼散射效应，运用级联同种光纤设计出全光多波长转换耦合器，使转换输出的各路信号光功率相等．建立了全光多波长转换设计方案的理论模型，给出了设计原理框图以及实现方法，并以1路泵浦信号光、4路连续探测光为例，通过OptiSystem软件进行了仿真，仿真结果表明：所设计的全光多波长转换耦合器能同时对4路探测光实现波长转换，转换输出的信号光码型和输入泵浦信号光码型基本一致；转换效率和消光比随着探测光波长的增大而增大，最大值分别为-34dB和36．68dB；Q因子随着探测光波长的增大而减少，最大值为128．29；在级联光纤之后，4路输出信号光峰值功率和消光比基本相等，Q因子整体数值相对于全光多波长转换后有所下降，最大值为89．5455，验证了该方案的可行性．

英文摘要：

Based on stimulated Raman scattering theroy in optical fiber, an all-optical wavelength conversion coupler is designed. The wavelength converter was processed to achieve an equal power in each channel by cascaded optical fiber. All-optical wavelength conversion theoretical model, the design scheme and implemented method are presented. The simulations are calculatated by OptiSystem with a pump signal and 4 continuous probe signals. 4 wavelength converted continuous probe signals and analogous input-output code type are showed as the simulation result. The inceasing conversion efficiency and the growing extinction ratio are presented by the wavelength growth. The maximum conversion efficiency and extinction ratio are --34 dB and 36. 68 dB respectively. The decreasing Q factor is showed with probe signal wavelength gorwth and 128.29 is the maximum Q factor value. 4 outputs signal light peak power and extinction ratio are approximately the same after cascading the optical fiber. The decreasing Q factor value is presented by cascading the optical fiber and the maximum value is 89. 5455. The feasibility is verified by the scheme.