单模光纤中四阶色散控制的孤子族

A FAMILY OF SOLITONS IN THE PRESENCE OF THE FOURTH－ORDER DISPERSION IN MONOMODE OPTICAL FIBERS

研究了单模光纤中最小群速度色散波长附近的孤子传输，利用最小作用量原理得到了由四阶色散控制的一族孤子解，在这族孤子解中包含了原来文献中报道的精确解且解析解与数值模拟结果一致．

The soliton propagation in the region of minimum group － velocity dispersion in monomodeoptical fibers is investigated. A family of s0liton solutions in the presence of the fourth － orderdispersion is obtained using the variational technique. The soliton family include the exact solutionsobtained in the previous references and are in good agreement with numerical simulation.