我们在单模光纤孤立子周期处观察到了6.4PS 光脉冲序列的形状及频谱的复原现象。光源是1.55μm 波长的 F_2~+染色中心激光器,光纤长1.3公里,是这种脉冲宽度及波长时的一个孤立子周期。正如非线性薛定锷方程所预示的那样,尽管起初脉冲的频谱有展宽,但由于相位自调及暂态压缩,所以还是发生了脉冲复原现象,而相位自调和暂态压缩则是负群速色散作用于调频脉冲的结果。 We observed the shape and spectral recovery of the 6.4PS optical pulse sequence at the single-mode fiber soliton cycle. The light source is a F_2 ~ + dye center laser with a wavelength of 1.55μm, and the fiber length is 1.3km, which is a soliton sub-period of such pulse width and wavelength. As the non-linear Schrödinger equation predicts, although the spectrum of the initial pulse is broadened, the phenomenon of pulse recovery occurs due to the phase self-tuning and transient compression, while the phase self-tuning transient compression is negative group velocity dispersion The result of the FM pulse.