激发态吸收(ESA)对掺铒光纤放大器的影响

Effect of ESA in Erbium--Doped Fiber Amplifier

本文分析了掺铒光纤放大器(EDFA)的激发态吸收(ESA)现象,得到了存在ESA时的EDFA增益与阈值的表达式。分析结果表明,ESA严重时将使EDFA不能正常工作。

The Phenomena of excited state absorption(ESA)in erbium--doped fiber am-plifier(EDFA)is analyzed in this paper. The expressions of the gain and thre-shold in EDFA are obtained while ESA exists.The analyses show that EDFA cannot operate if ESA exists severely.