Black box model and theoretical model investigation of gamma irradiated Yttria-alumina-silicate erbium doped fiber amplifier at 1540 nm

摘要

AnewmethodforcalculatingthegainofgammairradiatedYttria-aluminasilicateerbiumdopedfiberamplifier(GIEDFA)ispurposedusingablackboxmodel(BBM)andcomparedwiththeoreticalmodelatwavelength1540nm.Twoimportantparameterswhichalpha;andPmaxareintroducedin(BBM)andarealsoalmostindependentofwavelength1540nmatthefixedradiationdose.ApplyingtheBBM,wecanestimatethegaininthewavelengthof1540nmeasily,onlybytheparametersofalpha;,Pmaxandthesmall-signalgainincorrespondingwavelengths.TheBBMgivesaverygoodagreementresultswiththetheoreticalmodel,whichaffordsanewwaytocharacterizethegaindeteriorationcharacteristicsofEDFAinradiationenvironment.