Small Amplitude Solitons in the Higher-Order Nonlinear Schr(o)dinger Equation in an Optical Fibre

• 来源期刊: 中国物理快报(英文版)
• 年，卷（期）: 2003,（10）
• 页码范围: 1770-1772
• 页数: 3页
• 语种: 英文

摘要

By taking advantage of the approximate approach of small amplitude soliton, we study the higher-order nonlinear Schrodinger equation in an optical fibre. Our results show that the bright and dark solitons of small amplitude can appear on the background of a continuous wave in normal dispersion regime or in anomalous dispersion regime simultaneously due to the higher-order effects. Interesting connection between the higher-order nonlinear Schrodinger equation and the Korteweg-de Vries equation is also demonstrated.