非线性光纤环形镜(NOLM)在不同抽运条件下具有不同的连续波开关特性,当单抽运NOLM在抽运峰值功率大于开关阈值功率时具有反转抽运脉冲峰的特点,在抽运脉冲上升与下降沿处各产生一个脉冲输出;当使用双脉冲抽运在两抽运脉冲除峰值功率和波长不同外其他参数一致时,透射输出由两个脉冲的峰值功率差决定,具有脉冲峰值功率比较作用。基于NOLM的这两个特性设计了全光分离两光功率水平信号的方案。利用光子学仿真软件进行了数值仿真,结果显示二光平信号被成功分离,并分别加载到不同波长上。实现了高功率级无基座脉冲输出,表明该方案也具有消除脉冲基座的能力。 The nonlinear fiber loop mirror (NOLM) has different continuous wave switching characteristics under different pumping conditions. When the single-pumping NOLM has the characteristic of reversing the pumping pulse peak when the pumping peak power is greater than the switching threshold power, When the two pump pulses are identical except for the peak power and the wavelength, the output of the transmission is determined by the difference of the peak power of the two pulses with the peak value of the pulse Power comparison. Based on these two characteristics of NOLM, a scheme of all-optical separation of two optical power level signals is designed. The numerical simulation was carried out by using photon simulation software. The results showed that the two light level signals were successfully separated and loaded into different wavelengths respectively. The realization of the high-power stage without base pulse output, indicating that the program also has the ability to eliminate the pulse base.