Taken into account both second order dispersion and SPM in the abnormal-dispersion region of single-mode fibers, we obtained the expression of chirp induced by GVD and SPM.
考虑了光源初始啁啾的作用 ，推导出均方根脉宽的解析表达式 ，分析表明 ：二阶偏振模色散对脉冲展宽的作用与群速度色散及啁啾有关 ，一阶偏振模色散的作用则与这两者无关。
It is found that the numerical dissipation is second order and the numerical dispersion is third order.
得出该格式的数值耗散为二阶，数值频散为三阶。
Models of periodically inhomogeneous perturbations are made reasonedly in a quasi-ideal dispersion-managed soliton system, their effects on second-order soliton propagation are investigated.
在准理想的的色散管理系统中建立了非均匀扰动模型，研究了它们对二阶孤子传输的影响。
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