The interaction between femtosecond dark solitons is similar to that of the picosecond dark solitons.They are more stable than the bright solitons and have only little repulsive force between them.

• 飞秒暗孤子间的相互作用与皮秒暗孤子基本相同，它们比亮孤子更加稳定，只有微小的排斥作用，同样也不具有周期性。