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:2000202216:PON(,621006):,ITU2TG1982,PON,ABPON,1341/8:;;PON;:TN915163:A:1009-5373(2001)03-0028-07(PON)(SDH,PDH),PON,PON,;,,Ó,,():,;,PON;,Ó,,,PON,,-PONÓPON,(OLT)(ONU),,PONPON,10km20kmÓ,(),()(),,2Mb/sPON,1310nm;,,1310nm1550nmWDM,ATMPONÓ,ONU2820016313,,,,OLTONU,,Ó,PON,23,,,,,(10%+90%),(20%+80%),(10%+30%+60%),PON,,,;,,PON,CSMOLENE(2Mb/sPON),(/2M),,PONPON:,(),,,,,PON,(),(),(,),SDHPDH(AON),;PON,PON,,,,();,,()PON,,3:,,,,,PONITU2TG1982PON,G1983ATMPONG1982YDN05721997PON,G1982,AA3,,1YDN05721997A3PONPON,;,PON,,1,8,:11,12,14,16,18,116,132,164;3::PON2911:011,1,2,3,4,5,10,15,20,25,30(km),,,3,13,12,14,PON,,PON,1dB/kmkm01111234510152025304(11)715781078169113916710121314116185191292110323133(14)1013101831114111971215313111613919185221512412726167(12)81428191914491961014911102141211716420107211812411(12)1014510199111561211412171131281615920116221732414926196(11)9191013910192111441119712151516919112211552312925159(16)1119712151131081316614123141818111211682412526101281418(11)1013110181111341118812141121951611719162221072318126112(18)1317614129141861514215199161551918323138251932716930108(12)111131116312116121713123131771619820142221872516126192(14)14114141671512415181613716193201222317826133281093014812(12)131421319114144141971515161041912422167251112618526192(16)15185161391619617153181118166211962515328109291853212516(11)13126131761413141841513815192191142215925105261829111(116)17141171941815191061916220118231462710129155311333169(12)1318914139141931514716161541917623121251662714129172(14)171581811118167191231918201362316427119291743114933188(14)131971414715101151541610816162191832312925174271492918(18)171718123181791913619192201482317727131291863116134YDN05721997P136A3,,?PON,,,,,PON,,PON,,,,,,PONAB11PON1PON1PON302001OLTONU,L,()l,l=S+C+F+Mc+B(1):SONU(),CONU,FONU(L),Mc,BONU,(1)4,A,A=S+C+F+Mc(2)(1)B,J,B=B1+B2+B3++BJ(3)l=A+(B1+B2+B3++BJ)=A+B(4),,PONPON,:ÓPON,,,:A(2),B2(A)(3)A(L)A,BnB,,3(B)ÓAPON(ITU2TG1982,YDN05721997),m:L05km,m2/km+2;510km,115/km+2;10km,112/km+2,,2K:2,,Mc:05km1dB,510km2dB,10km3dBs011dB,0105dB,0115dB(FC2PC)C013dB,012dB,015dBf0135dB/km(1310nm),0102dB/km,0137dB/km,Aa,AAL,(05km)(510km)(1020km)320km,1020km,,,A21:,A015dB,018dBA3::PON31J,Aa:+015dB/,01234,Aa0Aa1Aa2Aa33Aa3015dB,Aa0ÓBB:1,(POUT)(PIN)n(n=POUT/PIN)b0Le,Bmn,b0,Banb0BaBmn,BBa(Bm)n01,/(),ITUG1982PON,21PONPON(4),la:la=AaJ+(Bal+Ba2+Ba3++BaJ)(dB)(5)la=Aa0+015J+Ba1+Ba2Ba3+BaJ(dB)(6),JPON,L(km),n,ABAaJBa1Ba2Ba3BaJ,,Ba,,PON(AB,):,OLTONUPON:(/),PON:ÓA,L(km)AaJ;ÓB,n1,n2,n3nJ,Ba1,Ba2,Ba3,BaJÓ,la=AaJ+(Ba1+Ba2+Ba3++Baj)PON:,,/,;,:;,,,,,PONPON,,:ÓPON,,Ó,,,OLTONUÓ,Ó,,,B,,Ó,L35km,2,322001ITUAPON(Max.20dB),,216PON,,,ÓPON,:;,,Ó,,,1dB(2dB),,1dBPON44PONPON:ONU7/ONU8,L=9km,4;ONU1/ONU2,L=3km,1(B1)PON27dB,5dBPON,2,13,,3,G1982,PONÓ:AAa3(9km)=818dB,Aa4(9km)=8.8+0.5=9.3dB,B:Ba1+Ba2+Ba3=3Ba(n=0.33)=35.46dB=16.38dB,Ba4=B(n=0.5)=3.51dBA+B=29.19dB,27dB,B1,(011:018:011),B,Ba1(n=0.8)=1.3dB,(n=0.33)4116dB,A+B=25.03dB,27dB,Ó:A,Aa1(3km)=3.95dBB1,n=0.1,B,Ba1=11.08dBA+B=15.03dB,5dB,,Ó:PON,1832(km)PDH,1896(km)PDH,2,2216E1OLT2E1ONU1/3(011:018:011)1/3()1/2()1824232(km)PON,,,,B1B2(20%:60%:20%),,PONPON,,PONITU2TG1982PON,,3::PON33(2)(1315)(100%90%20%10%70%)PON,,:[1]1[M]1:11998[2]ITU2TG1982119961OpticalaccessnetworkstosuportservicesuptotheISDNprimaryrateorequivalentbitrates.[3]YDN057219971[S]1:(1945-),,1967,730,730,,,EngineeringCharacteristicsofPassiveOpticalNetworksanditsBudgetDesigning:PONAverageChartTechniquesQUANHong2lin(SichuanMianyangGuangyiTelecomCO.,LTD,Mianyang621006)Abstract:Thepaperdescribesengineeringdesigncharacteristicsofpassiveopticalnetworks(PON),andanalysesapplyingrestrictionsofGaussianstatisticalapproachrecommendedbyITU2TG982,thepresentsanewsimplifiedmethodforPONengineeringbudgetdesigning:PONaveragecharttechniques.Thepaperdescribescharacteristicsofthismethod,chartA&chartB,andhowtousethesetechniques.Finally,applyingwithPONaveragecharttechniques,thepapermakesbudgetdesigningexampleofan1to8PONdistributionsystem,whichhas4opticalsplitterscascaded,andincludessome13splitters.Keywords:PON;Engineeringdesigncharacteristics;PONaveragecharttechniques;budgetdesigning:2000212226,(,610054):,DSP,MODEM,,,,:;;;:TN915105:B:1009-5373(2001)03-0034-04,(ARQ)(FEC),,,,(,,),MODEM,,3420016313