【摘要】 从模耦合方程出发,分析了直流切趾对光纤光栅特性的影响,给出了直流切趾和光栅啁啾之间的关系,提出了用线性直流切趾来实现均匀模板制作啁啾光栅和同一啁啾模板制作不同色散特性光栅的方法。实验上,用均匀模板制作了色散量为-2 126 ps/nm的啁啾光栅,并用同一啁啾模板制作出了色散量为-1 599.362 71 ps/nm-、1 250.4 ps/nm和-2 011.4 ps/nm的光栅。实验结果表明,理论和实验符合较好。更多还原

【Abstract】 The effect of Direct Current(DC) apodization on the Fiber Bragg Gratings(FBG) was investigated with mode-coupling theory and experiment,and the relationship of the DC apodization and the grating chirp was given. Both of the uniform FBG’s and chirped FBG’s(CFBG) group delays were changed after linear DC apodization.A uniform period FBG with a linear dispersion-2 126 ps/nm was fabricated using a uniform phase mask,also the CFBGs with dispersion values of-1 599.362 71 ps/nm,-1 250.4 ps/nm and-2 011.4 ps/nm were fabricated with the same chirped phase mask,respectively,which shows the experimental results agree well with those theories reported in literatures.更多还原