The modified nonlinear Schrodinger equation (MNLSE) can describe propagation of ultrashort pulses in single-mode fiber by adding high-order effects terms.

修正的非线性薛定谔方程(MNLSE)通过加入高阶效应项可以描述单模光纤中的超短脉冲的传播。

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However, as the pump intensity increases, high order, especially fifth-order nonlinear effects will appear in the probe signal.

当抽运光强度增大时，探测光信号中会出现明显的高阶特别是五阶非线性效应。

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