【摘要】 本文直接在麦氏方程、弱波导结构与电磁场边界连续基础上 ,推导出光纤光栅反射光谱特性新型2× 2矩阵算法 ;与耦合模理论相比 ,本方法为周期性光纤光栅的研究提供了简便、直观的计算模型。应用该模型计算了高斯型包络函数光纤光栅的光谱响应 ,并分析了其放缩特性更多还原

【Abstract】 A simple 2×2 matrix method for calculating the reflection spectrum for a fiber grating is developed.The method is based on Maxwells equations,weak waveguide approximation,and boundary continuity fot the electromagnetic fields.Compared to the conventional coupling theory,the present method is much simpler and more intuitionistic.The reflection spectrum with a Gauss index profile is calculated and the narrowing and broadening characteristics of the fiber grating is analyzed.更多还原