光纤GVD和SPM效应所致频率啁啾的匹配

On match of frequency chirp induced by both GVD and SPMin a single-mold fiber

在分析单模光纤群速度色散效应(GVD)和自相位效应(SPM)相互作用的基础上,推导出和共同作用引起的啁啾表达式,全面分析了色散长度、非线性长度LD、非线性长度LNL与啁啾变化的关系,结果表明:随着LD/LNL的不同,啁啾特性有着显著变化,当N=LD/LNL=1,即实现了单模光纤中群速度色散效应与非线性效应相互作用所致啁啾的最佳匹配,通过控制脉冲输入功率,可望实现光脉冲无啁啾的稳定传输。

On the basis of GVD and SPM,we obtained an analytic expression of chirp induced by the interactions of both SPM and GVD chirp,and completely analyzed the relationship of chirp changes and dispersion length L D and nonlinear length L NL .The results showed that the feature of chirp changes obviously with the alternation of L D/L NL .The formula N=L D/L NL =1 means the chirp has completed the best match of the chirp in a single-mold fiber.We may obtain stability of zilch-chirp pulse by controlling the input power of pulse in a fiber.