部分相干空间孤子的频移

Spectral Shift of Partially Coherent Spatial Soliton

以部分相干的高斯-谢尔模空间光孤子在非线性折射率呈对数分布的介质中的传输理论为基础,详细分析了当考虑频谱分布有一定线宽时,频谱的相对中心频移演化特性,并且对考虑频谱分布后孤子的稳定性进行了相应的分析。分析表明,相对频移随传输距离的演化呈准周期出现,而考虑频移后,原本稳定的空间孤子在演化过程中也呈现准周期的振荡,并且孤子相对半径的演化规律与相对频移的演化规律恰好相反。

Based on the transport theory of partially coherent Gaussian Shell model （GSM） spatial photonic soliton in the media with logarithmic-distributed nonlinear refraction rate, the evolvement properties of relatively centric spectral shift of the frequency spectrum is analyzed at length when there is line breadth of spectrum distribution. Then the stability of solition is also discussed when the spectrum distrbution is considered. The results show the quasi-periodic appearence of the relative spectral shift with the transport distance. When the spectral shift is considered, the stable soliton turns to oscillate quasi-periodically in the process of evolvement. Furthermore, the evolvement of the relative radii of soliton is contrary to that of relative spectral shift.