【摘要】 本文从含修正的非线性薛定谔方程出发,采用变分法,导出了三阶色散情况下光纤中类明孤子参数随传输距离的演化方程组;在此基础上,求出了振幅与脉宽、频率与啁啾及中心位置、脉宽与啁啾之间的三个约束关系和脉宽演化的解析解;讨论了三阶色散对类明孤子演化特性的影响。更多还原

【Abstract】 In this paper,derive the evolution equations for the parameters of the bright-soliton-like pulses in optical fibers by means of variational method from the MNLS equation.Then,get three important restricted relations between amplitude and width,frequency and chirp and center position,width and chirp.Obtain analytical solution about the width of pulse evolves on the propagation distance.The influence of the third-order dispersion on the evolution properties of the bright-soliton-like pulses in optical fibers is discussed.更多还原