【摘要】 文中应用相干理论对取样啁啾光纤光栅 (SCFG)进行了研究 ,提出了一种新的分析方法。它和通常所用的基于耦合波方程的传输矩阵法相比 ,不仅可以计算出SCFG的反射谱和时延谱 ,还可以推导出SCFG反射率的公式 ,从中得到信道间隔 ,信道带宽 ,信道数目 ,反射率大小与SCFG参数的关系。因此这种新的分析方法更加系统 ,更加完善 ,对SCFG的设计和研制具有很好的指导作用。更多还原

【Abstract】 We bring forward a new method to analyse the samp le d chirped fiber grating (SCFG) on the basis of the coherence theory. With this m ethod, we get more results, not only the characteristics of reflectivity, transm ission and time delay about the SCFG, but also the channel’s number, wavelength spacing between two neighboring channels, reflectivity maximum and channel’s b andwidth about the SCFG. This method is more systemic and perfect than the usual transfer matrix method for analysing. And it can guide well for designing and m aking the SCFG.更多还原