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利用耦合模理论和数值方法，对常耦合系数线性啁啾光栅分布布拉格反射（ＣＧ－ＤＢＲ）结构光纤激光器的特性进行分析，并得到了阈值增益和纵模谱。为进一步的设计与制作提供理论指导。
The properties of linearly chirped grating distributed Bragg reflection (CG-DBR) fiber lasers with constant coupling coefficients were analyzed by means of coupled-mode theory and numerical methods. The threshold gain and longitudinal mode spectrum were obtained. For further design and production to provide theoretical guidance.