具有不同分布耦合系数的线性啁啾光纤光栅

Linearly Chirped Fiber Gratings with Different Distributed Coupling Coefficients

基于模式耦合理论 ,推导了描述线性啁啾光纤光栅的 Riccati微分方程。针对光栅不同的耦合系数分布 ,数值分析了分布耦合系数对线性啁啾光栅频率响应特性的影响。分析表明 ,在光栅制作过程中通过控制光栅的耦合系数分布 ,将会使光栅具有不同的频响特性 ,从而使其具有不同的用途。

Based on mode-coupled theory, Riccati differential equation for linearly chirped fiber gratings is obtained. Frequency response characteristics of linearly chirped fiber gratings with different distributed coupling coefficients have been analyzed numerically. The simulation results show that different distributed coupling coefficients of a fiber grating will result in its different frequency responses to its different applications.