33北大光纤通信课件：4_光放大器

1442~1551-p249~286112-p340~36143-p373~3802410dBm−30dBm0.2dB/km150km341441EDFA1WDM235421210-20dB15-30dBm36422-p34611.33dBPsat=G0−3×Pin-satdBmG(dB)Pin(dBm)G0(dB)3dBGsat(dB)Pin-sat(dBm)1dBG1dBdB742:10-25dBm5dB25-35dB842:−30dBm4dB943SOAEDFA1043SOA114SOAEDFA124SOAEDFAEDFA1344SOASOAIIIVFP-ATW-ASOAFP-ASOASOATW-ASOASOA3SOASOA1444SOASOASOA1544SOA6cmSOA1644SOAns1SOASOA2SOA1ps~100psSOASOASOA1744SOASOA1ps~100psSOASOAP0=G0×PinG(dB)Pin(dBm)G0(dB)3dBGsat(dB)Pin-sat(dBm)P0=G0×Pin1844SOAG(dB)Pin(dBm)G0(dB)3dBGsat(dB)Pin-sat(dBm)P0=G0×PinSOA1ps~100psNRZ2.5Gbit/s~400ps10Gbit/s~100ps40Gbit/s~25psSOASOA1944SOASOA1ps~100psSOA2.5Gbit/s~400ps10Gbit/s~100ps40Gbit/s~25ps1ps1psP1λ1P2λ2Pin-sat()SOAP1λ1P2λ22044SOASOASOAPamp,satG0Ps,in2-p344-5G0g0Lωω0τR0.1ps3-p374g(ω)3-p3734.1.14.1.21-p2535.1)(10,,GGlnPPGinssatamp+=LgLgReeG)(])(1[02200ωτωω−+==g(ω)ωω02-(11.15)1-(5.23)2145SOASOA1234562246EDFAEDFA10~30Er0.1%EDFA1520~1700nmEDFA32-p34811.530-200mW980nm1480nm1520~1700nmEDFA2-p34811.51520~1700nm980nm1480nm1520~1700nm2346EDFAEDFA15~35dBEDFA/980nm1520~1700nm980nm1480nm1520~1700nm2446EDFAEDFA0.1~10msEDFA1EDFA2kbit/s155Mb/s6.4nsEDFAEDFAEDFAinpspinsoutsPPP,,,λλ+≤insinpspinsoutsPPPPG,,,,1λλ+≤=2-(11.19)N2-(11.16)ppsspspsPPchNhvNPλλλ⋅=⋅⋅=⋅=,,2546EDFAEDFAASE-nsp1.4~4nLnHEDFAoptASELHHspASEvPfGnnnhvfGnhvfS∆=−−•=−•=]1)([]1)([)(2,22)(insphphGPiℜ==σ2222222ASEASEASEsASEshotshotsTtotaltotali−−−−++++==σσσσσσ≈02-(11.29)2-(11.32)2646EDFA5EDFA11.31))((42)(,,2,2222222BSGPBGPqGPiiNSASEinsinsinsASEssshortphtotalphtotalphoutℜℜ+ℜℜ=+≅==−−σσσσσoptASEspASEvPGnhvS∆=−•=)1(2-(11.26)2-(11.27)2-(11.29)2-(11.32)2-(11.24))1(212/)1(212,,−+•ℜ=−•ℜ+•ℜ=GnGqBPqGnhvGqBPNSspinsspinsoutη()()1)(22)1(21=≥≅−+==ηηηspspoutinnGGnNSNSFqBPBqIPiiNSinsphinsQphin22)(,2,22ℜ=ℜ==2-(6.13)2747EDFAEDFA30~50dB22dB2847EDFAEDFAFF()()11,2)1(21=≅−+==ηηηGnGGnNSNSFspspoutin10/=ηη∞−=spLHHspnnnnn1F=23dB2947EDFAEDFAFF()()spspoutinnGGnNSNSFηη2)1(21≅−+==insideNinNoutNPPGP−−−+⋅=inNoutNinoutinoutoutinoutoutininPGPNGNNSNSNSNSF−−⋅=⋅=⋅⋅==inNinsideNPGPF−−⋅+=113047EDFAEDFAFFinsideNinNoutNPPGP−−−+⋅=inNoutNinoutinoutoutinoutoutininPGPNGNNSNSNSNSF−−⋅=⋅=⋅⋅==inNinNinsideNinsideNinNinsideNinNoutNPGGPGPPPGGPPGP−−−−−−−−⋅⋅=⋅++⋅⋅=+⋅=11221112222)(2inNinsideNinNinsideNinNinsideNinsideNinNPGGPPGPPGGPPGPGGF−−−−−−−−⋅⋅+⋅+=⋅⋅+⋅+⋅⋅=1122111112212112213147EDFAEDFAFFinNinsideNinNinsideNinNinsideNinsideNinNPGGPPGPPGGPPGPGGF−−−−−−−−⋅⋅+⋅+=⋅⋅+⋅+⋅⋅=112211111221211221inNkinsideNkkPGPF−−⋅+=11inNkinsideNkinNinsideNinNinsideNkPGGGPPGGPPGPF−−−−−−⋅⋅+⋅⋅+⋅+=1121122111......1111111=⋅+=−−kPGPFinNinsideNinNkinsideNkkPGPF−−⋅=−11inNkinsideNkkkPGGGPGGGF−−−⋅⋅=⋅−112121......13247EDFAEDFAFFinNkinsideNkkPGPF−−⋅+=11inNkinsideNkinNinsideNinNinsideNPGGGPPGGPPGPF−−−−−−⋅⋅+⋅⋅+⋅+=1121122111......1111111=⋅+=−−kPGPFinNinsideNinNkinsideNkkkPGGGPGGGF−−−⋅⋅=⋅−112121......1inNkinsideNkkPGPF−−⋅=−11121213121...1...11−⋅−+⋅−+−+=kkGGGFGGFGFFF3347EDFAEDFAFFF1F2Fk121213121...1...11−⋅−+⋅−+−+=kkGGGFGGFGFFF()()12)1(21≅−+==GnGGnNSNSFspspoutinηηFk3447EDFAEDFA3547EDFAEDFA2.5Gb/s22dB10Gb/s28dB3647EDFAEDFA374SOAEDFAEDFA384SOAEDFAEDFA394SOAEDFADWDM404SOAEDFASOA414SOAEDFASOA424SOAEDFA434RamanSRSEDFA5~7dB0dB10dBEDFAEDFA10Gbit/sWDM300040Gbit/sWDM100050-100kmG.65250-100kmG.65250-100kmG.652400-600mW400-600mW400-600mW