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类明孤子在光纤中传输特性的变分研究 被引量:14

A Variational Study on the Propagation Properties of Optical Bright-Soliton-Like Pulses in Optical Fibers
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摘要 应用变分法 ,研究了微扰对类明孤子在光纤中非线性传输特性的影响 ,导出了类明孤子脉冲参量演化的动力学方程。它统一了在单模光纤、色散缓变光纤或色散控制光纤中类明孤子脉冲参量演化的动力学方程。在此基础上 ,计算了色散缓变光纤中的线性高阶色散微扰。结果表明 :线性高阶色散对类明孤子脉冲的位置和相位有影响 ,而对振幅、宽度和啁啾没有影响 ; The influence of perturbation on the propagation properties of optical bright-soliton-like pulses is investigated in optical fibers by means of variational method, and the evolution equations for the parameters of the optical bright-soliton-like pulse is derived. These equations are the unity of the evolution equations for the parameters of the optical bright-soliton-like pulse among monomode optical fibers, the fiber with slowly decreasing dispersion or dispersion-managed optical fibers. By these equations, the perturbation of linear high-order dispersion in the fiber is calculated. The results show that linear high-order dispersion affects the position and the phase, doesn't affects the amplitude ,the width and the chirp of the bright-soliton-like pulse. The slowly decreasing dispersion affects all of the parameters of the optical bright-soliton-like pulse.
作者 谢应茂
出处 《光学学报》 EI CAS CSCD 北大核心 2004年第4期452-455,共4页 Acta Optica Sinica
基金 江西省自然科学基金 (0 112 0 0 5 )资助课题
关键词 光纤光学 类明孤子 微扰 高阶色散 变分法 光纤通信 非线性薛定谔方程 fiber optics bright-soliton-like perturbation high-order dispersion variational method
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