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以三层阶跃折射率波导结构和耦合模理论为基础 ,考虑到氢分子引起的折射率变化 ,针对氢载长周期光栅提出了一个简单的模型对长周期光栅的退火进行了分析和模拟 ,所得到的结果与实验符合得很好
Based on the three-step refractive index waveguide structure and the coupled-mode theory, taking into account the refractive index changes caused by hydrogen molecules, a simple model for long-period hydrogen-based grating is proposed for the analysis and simulation of long-period grating annealing. The results obtained are in good agreement with the experiment