具有饱和非线性的非克尔光纤中自相位调制效应所致啁啾

在考虑光纤损耗下，从理论上推导出具有饱和非线性的非克尔光纤中自相位调制效应产生啁啾的解析表达式；并在计算机上模拟了光纤中啁啾的演变过程。结果表明，非克尔光纤中的饱和效应越强，自相位效应所产生的啁啾越小；随着光纤传输，啁啾不断增大；而且啁啾与光纤损耗、入射脉冲的峰值功率等因素有关。

Chirp Induced by Self-phase Modulation in Non-Kerr-like Optical Fibers with Saturable Nonlinearity

An analytic expression of the self-phase modulation induced by chirp in nonKerr-like optical fibers with saturable nonlinearity is derived taking into account the fiber loss. The evolution of chirp is simulated by computer. The results show that the more powerful the saturable effects, the smaller the chirp induced by self-phase modulation: the chirp increases in magnitude with the propagation distance and the chirp depends on the fiber loss and the peak power of the incident pulse.