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利用耦合模理论和数值方法，对分布布拉格反射光纤激光器的特性进行分析，对利用不同光栅作反射镜的激光器阈值增益谱进行了比较。为进一步的设计与制作提供了理论指导。
Coupled mode theory and numerical methods were used to analyze the characteristics of distributed Bragg reflection fiber lasers. The laser threshold gain spectra of different Bragg grating mirrors were compared. It provides theoretical guidance for further design and production.