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以耦合模理论为基础 ,采用分段均匀和传输矩阵法 ,得到分析啁啾非均匀光纤光栅光谱特性的教学物理模型 ,讨论了啁啾系数对高斯型切趾光栅和相移光栅滤波特性的影响。
Based on the coupled-mode theory, the teaching physics model for analyzing the spectral characteristics of chirped non-uniform optical fiber gratings is obtained by using the piecewise uniform and transfer matrix methods. The effects of chirping coefficients on the filtering characteristics of Gaussian-type apodized grating and phase-shifted grating are discussed .