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双重光纤布拉格光栅无论是在通信领域还是在传感领域都有着重要的应用价值。在分析双重光纤光栅折射率扰动特征的基础上 ,得出了它的耦合方程 ,并采用数值计算方法 ,对它的光谱特性及影响光谱特性的因素进行了系统的分析 ,重点讨论了两个光栅的关联特性。所用的分析方法和得到的结果对双重光纤光栅的制作和应用具有参考价值。
Double fiber Bragg grating has important application value in the field of communication and sensing. Based on the analysis of the characteristics of the refractive index perturbation of the double FBG, the coupling equation is derived. The numerical calculation method is used to analyze its spectral characteristics and the factors that affect the spectral characteristics. The two grating Related features. The analytical methods and the results obtained have reference value for the fabrication and application of double optical fiber grating.