光纤CATV系统载噪比劣化与光放大器噪声系数的关系

摘要

介绍了利用CATV分析仪,通过测量光放大器引起的系统载噪比劣化来推算光放大器噪声系数的方法,给出了噪声系数与载噪比劣化之间的关系。根据实验测量数据得到的噪声系数曲线与掺铒光纤放大器专用设计软件的数值模拟结果一致。%The noise figure of erbiumdoped fiber amplifiers (EDFAs) can be derived from the degradation of carriertonoise ratio by the cable TV analyzer. The test method is introduced in the paper and the dependence of noise figure on the CNR degradation is also analyzed in detail. The NF curve obtained from the experimental data is in agreement with the numerical calculation results given by the special simulation software of EDFA Designer.