光纤GVD与SPM效应联合作用下频率啁啾的特性研究
he research of frequency chirp induced by the interactions of both GVD and SPM in optical fibers
本文首先基于单模光纤的非线性薛定谔方程推导了输入脉冲为高斯脉冲时，群速度色散（GVD）效应及自相位调制（SPM）效应单独作用下频率啁啾的表达式，然后进一步推导出GVD与SPM联合作用下频率啁啾的表达式，最后对正常色散工作区以及反常色散工作区的频率啁啾及脉冲形状的变化进行了仿真分析。结果表明GVD与SPM的共同作用将导致脉冲的展宽，对于不同的LD/LNL(LD为色散长度，LNL为非线性长度), 其啁啾特性表示出明显的不同。GVD与SPM的共同作用决定着对稳态的调制，当LD=LNL时自相位调制效应和群速度色散效应实现了同步共同作用，通过对输入功率的控制即可实现脉冲的无啁啾稳定传输。
his paper firstly obtained the frequency chirp expressions based on the nonlinear Schrodinger equation in single-mode optical fiber, when GVD and SPM action individually and the input pulse is gauss pulse. Then, we obtained the frequency chirp expressions induced by the interactions of both GVD and SPM. At last, we simulated and analyzed the chirp and changes of pulse shape in normal dispersion region and abnormal dispersion region. The results show that pulse expanded when both SPM and GVD have actions, and features of chirp obviously changes with LD/LNL changes. The unite operations of GVD and SPM determine the module of stability state, and when LD=LNL GVD and SPM achieve synchronization, we may obtain stability of zilch2chirp pulse by controlling the input power of pulse in a fiber.
黄永清、张霞、胡钉
物理学光电子技术
群速度色散（GVD）自相位调制（SPM）频率啁啾脉冲形状
GVDSPMfrequency chirppulse shape
黄永清,张霞,胡钉.光纤GVD与SPM效应联合作用下频率啁啾的特性研究[EB/OL].(2009-03-04)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200903-142.点此复制
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