色散补偿准光孤子传输特性数值分析

Numerical analysis of quasi-soliton propagation properties using dispersion compensation

为了使准光孤子能够在标准单模光纤中稳定地传输,采用了分步傅里叶方法分别模拟了准光孤子在标准单模光纤中的传输和在色散补偿系统中的传输,得到了准光孤子在标准单模光纤中的传输特性和在色散补偿系统中的传输特性。结果表明,准光孤子在标准单模光纤的传输过程中脉冲峰值逐渐降低,脉冲宽度逐渐展宽,不能稳定传输;而准光孤子在采取色散补偿技术的色散补偿系统中传输时,脉冲形状几乎保持不变,与准光孤子直接在标准单模光纤中的传输相比,性能得到了很大改善。

For quasi-soliton propagating steadily in standard monomode fiber,its transmission in a standard monomode fiber and dispersion compensation fiber is studied with the split-step Fourier method. The transmission characteristics in a standard monomode fiber and dispersion compensation fiber are obtained. The numerical analysis shows that its peak value descends and its width broadens when it propagates in a standard monomode fiber,so the quasi-soliton can＇t propagate steadily. When it propagates in a dispersion compensation system using dispersion compensation technique,its shape can be kept almost the original shape,so quasi-soliton propagation properties can be improved greatly than in a standard monomode fiber.