掺饵光纤放大器的主要性能是它的饱和增益特性和噪声系数。本文首先用两个经验公式 ,介绍了一种用于模拟掺饵光纤放大器性能的简单方法。接着给出了一个超定方程组 ,对这种方法作了进一步的改进。最后分别给出了利用改进前后的方法计算所得到的结果 ,同时对计算结果和测量数据作了比较 ,比较显示我们的方法有着更高的精度 The main performance of the erbium-doped fiber amplifier is its saturation gain characteristics and noise figure. In this paper, we first introduce a simple method for simulating the performance of an erbium-doped fiber amplifier using two empirical equations. Then, an overdetermined system of equations is given, and this method is further improved. Finally, the results obtained by using the method before and after the improvement are given respectively. At the same time, the calculated results and the measured data are compared. The comparison shows that our method has higher accuracy