The results show that the ultrashort optical pulses can propagate in a single mode fiber in form of the bright or dark solitary waves without the soliton self-frequency shift.

• 结果表明, 超短光脉冲在光纤的零群速色散区仍能以亮、 暗孤波的形式传输, 且不存在孤子自频移现象。