正反向泵浦下掺铒光纤放大器的增益与自发辐射特性的研究

Study of Gain and ASE Characteristics of EDFA in the Forward-and Backward-Pump Schemes

本文论述了掺铒光纤放大器在正向泵浦、反向泵浦时，它的增益与自发辐射特性的不同，通过对电子工业部第四十六研究所研制的掺铒光纤吸收谱的测量，计算了正向泵浦、反向泵浦时，泵浦光、某一波长的荧光功率、荧光总功率及信号光功率随光纤长度的变化，分析了正反向泵浦时，掺铒光纤放大器的荧光谱与增益谱，并讨论了双向泵浦情况下，放大器增益与光纤长度的关系。

This paper presents the difference of characteristics of EDFA's gain and ASE, respectively, underforward pumping and backward pumping schemes. By measuring the absorption spectra of Erbium-dopedfiber, manufactured by the 46th Research institute of the Ministry of Electronics Industry, we estimatethe variations of pump power, fluorescence power at certain wavelength, total fluorescence power andsignal power along the EDF length, under forward pumping and backward pumping, respectively, andanalyze the spectra of fluorescence and gain of EDFA. We also discuss the relation between EDFA's gainand EDF length under the bi-direction pumping scheme.