为了研究光纤系统中由色散参量和“双陷”型非线性参量可能导致的孤子现象,通过分步傅里叶数值算法求解了变系数(1+1)维非线性薛定谔方程.结果发现,光纤孤子在两种“双陷”型非线性光学系统中具有一系列有趣的性质:如单孤子脉冲在可变参量背景下由“双陷”型非线性结构诱发的周期性振荡；双孤子脉冲在常参量背景下由“双陷”型非线性结构诱导的走离效应；三个孤子脉冲在两种“双陷”型非线性光学系统中体现的特殊相互作用、融合效应等.
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