超高速光孤子传输特性分析及数值模拟

Analysis and Numerical Simulation of the Optical Soliton Evolution Characteristic of Super High-Bit-Rate

通过数值解非线性耦合薛定谔方程 ,研究高速光孤子通信系统中高阶色散和偏振模色散对孤子传输的影响 ,并数值模拟孤子在单模光纤中的演变。研究结果表明 :偏振模色散导致孤子脉冲展宽、峰值功率下降、峰值点随传输距离漂移 ;高阶色散和偏振模色散使孤子加速展宽、脉冲沿出现非对称的振荡结构 。

In this paper the authors study that the high-o r der dispersion and PMD influence on the soliton transmission by using numericall y solved nonlinear coupling the Schrodinger equation.The soliton evolution is si mulated by using a numerical method in the single mode fiber. The results show t hat the soliton pulse is broadened by the PMD and the power peak drop out and po wer peak point is drifted along the fiber; the soliton pulse is broadened quickl y with high-order dispersion and PMD and an osocillatory structure are induced near one of the pulse edges an d the departure of power peak point is altered along the fiber.