Abstract
In this paper, the analytic three-soliton solution for a high-order nonlinear Schrodinger equation is obtained by the Hirota's bilinear method. The transmission characteristics of three solitons are discussed. By selecting relevant parameters, soliton interactions are presented, and the method of generating new solitons is suggested. The influences of corresponding parameters on soliton transmission and interactions are analyzed. Results of this paper are helpful for enriching the soliton theory and studying the signal routing system.