WDM系统中碲基掺铒光纤放大器泵浦问题的理论研究

Theoretical Studies on the Pumping Schemes for Erbium-doped Tellurite-based Fiber Amplifier in WDM

依据均匀加宽四能级结构速率方程组和光功率传输方程组 ,对WDM系统中碲基掺铒光纤放大器 (EDTFA)的泵浦问题进行了理论研究 ,给出了三种泵浦方式小信号和大信号状态下EDTFA信号增益分布曲线和放大的自发辐射 (ASE)噪声功率谱 ,在此基础上探讨了EDTFA泵浦方式与信号增益。

Based on the rate equations and light power propagation equations of hormgeneously broadened four energy-level system, the theoretical studies of the pumping schemes for erbium-doped tellurite-based fiber amplifier(EDTFA) in WDM are presented. The signal gain curves versus fiber coordinate and the amplified spontaneous emission(ASE) noise spectrum for three kinds of pumping configurations, namely, forward pumping, backward pumping and bi-directional pumping with small(-30 dBm) and large(0 dBm) signal power conditions, respectively, are obtained. Also, investigations of the relations between the pumping schemes with the signal gain and ASE noise, are given.