Kivshar Y S, Malomed B A
Opt Lett. 1993 Apr 1;18(7):485-7. doi: 10.1364/ol.18.000485.
It is demonstrated that the stimulated Raman scattering in optical fibers supports kink solitons (shocks) not only in the recently considered case of anomalous dispersion but also in the normal-dispersion regime. In both cases there is a family of the kinks depending on an arbitrary (positive) wave number of the carrying wave. Although all the kinks are unstable because of the inherent instability of the cw background behind them, in the normal-dispersion regime the instability, induced solely by the stimulated Raman scattering, is essentially weaker than that in the case of anomalous dispersion.
结果表明，光纤中的受激拉曼散射不仅在最近所考虑的反常色散情况下，而且在正常色散区域都支持扭结孤子（激波）。在这两种情况下，都存在一族扭结，它们取决于载波的任意（正）波数。尽管由于其背后连续波背景的固有不稳定性，所有扭结都是不稳定的，但在正常色散区域，仅由受激拉曼散射引起的不稳定性本质上比反常色散情况下的不稳定性弱。
