Abstract
We consider the case where two different frequency optical solitons are incident in a single-mode dual core fiber with Kerr nonlinearity. In this situation, the propagation dynamics of the two optical solitons are controlled by a set of coupled nonlinear Schrödinger equations(CNLSE). In this paper, the one- and two-soliton solutions of the CNLSE are obtained by Horita’s bilinear method, and the differences in constraints between one- and two-soliton solutions are discussed. Subsequently, when analyzing the characteristics of soliton transmission, it is found that the two-solitons will form the soliton molecules under certain conditions. This paper may have implications for the design of the stable mode-locked fiber laser and all-optical switches.
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