[in Chinese], [in Chinese]. Propagation and compression of high intensity pulse in GVP optical fibers[J]. Acta Optica Sinica, 1993, 13(5): 478
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Taking into account of the fourth- order nonlinear refractive index, we have obtained the soliton solution of the nonlinear equation which governs the propagation of optical pulse in group velocity dispersion (GVP) single-mode fibers. And we point out that there is a intensity threshold for the sech-type pulse compression.