Abstract
The realization of soliton control and soliton quality balance is one of the key research contents of optical communications. In order to better reflect the nonlinear interactions during soliton transmission and investigate their change rule, it is necessary to use the transmission model based on nonlinear interaction of solitons to study their characteristics. In this paper, we consider the fifth-order nonlinear Schrodinger equation with variable dispersion and nonlinear effects to realize soliton control and improve soliton quality. Analytic solutions of this equation are presented by the bilinear method, and the transmission and interaction characteristics of solitons in real fiber systems are studied. Influences of dispersion and nonlinear effects on them are analyzed. The nonlinear control based on the linear optical fiber is realized by studying the interactions between two adjacent solitons.