Ngokuphunyezwa kwezicwangciso-qhinga “zeBroadband China” kunye “noKukhawulezisa kunye nokunciphisa umrhumo”, izakhono zothungelwano olusisigxina lwaseTshayina ziye zaphuculwa ngokuqhubekayo;i-broadband yomsebenzisi itshintshile ukusuka kwi-10M nangaphantsi ukuya kwi-50M / 100M / 200M, kwaye iguqukele kwi-Gigabit;Iziseko zophuhliso lwenethiwekhi yebroadband Ukukhuthazwa ngokubambisana ngevidiyo enenkcazo ephezulu kunye neenkonzo ze-Intanethi.
Ukufezekisa ukuxhuma kwi-"100M" ukuya kwi-"Giga", iteknoloji ye-PON kufuneka iphuculwe kwi-10G PON.Esinye sezona zithintelo eziphambili kumlinganiselo wokuthunyelwa kwe-10G PON yindleko.Iindleko ze-10G izixhobo ze-PON ziquka iindleko zeemodyuli ze-optical, i-chipsets, kunye ne-PCD yokupakisha.Iindleko zeemodyuli ze-optical kunye ne-chipsets yinto ephambili.
I-China Telecom ye-2018 10G ye-PON yokuvavanya i-centralized acquisition test kunye nokubhida ngokukodwa kubandakanya iinxalenye ezintathu: GPON, 10G-EPON, kunye nezixhobo ze-XG-PON.Ingqokelela yezixhobo ze-GPON ye-China ye-2018 iquka i-GPON, i-XG-PON, izixhobo ze-XGS-PON.XGS-PON lixesha lokuqala.
I-GPON iphuculwe ukuya kwi-XGPON1 okanye i-XGSPON.Okwangoku, isisombululo esisisiseko kwimarike sisisombululo sangaphandle se-multiplexer.Kule sisombululo, iimpawu ze-GPON kunye ne-XGPON1 / XGSPON ziphindaphindwe kwimodi ye-WDM ngokongeza ikhadi lebhodi le-XGPON1 / XGSPON, kwaye emva koko i-multiplexer yangaphandle idluliselwa kubasebenzisi abakude.Umgaqo wesi sisombululo ulula, kodwa kukho izinto ezininzi ezingalunganga ezifana nexesha elide lokuvula ukuphuculwa, ixabiso eliphezulu, izixhobo ezininzi ezixhasayo, kunye nomsebenzi omkhulu wendawo.Ngaphezu koko, ukuqaliswa kwe-multiplexer yangaphandle kuya kuzisa kwakhona ukulahlekelwa kwamandla okongeziweyo, okuya kuba nefuthe.Imingcipheko yeshishini elikhoyo labathengi.
I-Combo PON yindibaniselwano yeGPON kunye ne-XGPON1 / XGSPON.Umgaqo wayo kukuba ngaxeshanye uqaphele ukuhanjiswa okuzimeleyo kunye nokwamkelwa kweGPON kunye ne-XGPON1 / XGSPON izibonakaliso ezibonakalayo kwimodyuli ye-optical, kunye nokudibanisa i-wavelengths ezine ezihlukeneyo ngesixhobo se-WDM esakhelwe ngaphakathi. iinkonzo zenethiwekhi ze-GPON ezikhoyo kunye ne-XGPON1 okanye iinkonzo ze-XGSPON ngexesha elifanayo, ukuphepha utshintsho kwisakhiwo sothungelwano esikhoyo kunye nokongeza indawo eyongezelelweyo yegumbi, ngaloo ndlela kufezekiswa ukuphuculwa kwe-GPON engenamthungo kunye nokusebenza kakuhle.
Umzobo wenkqubo ye-Combo-PON
I-Quad-OSA, i-four-port optical device ye-Combo PON OLT, idibanisa iiseti ezimbini ze-transceivers kwisixhobo esinye se-optical: i-GPON yendabuko ye-2.5G 1490nm DFB laser kunye ne-1310nm APD kunye ne-XGPON's 10G 1577nm EMLnmPD i-laser ye-A120 esetyenzisiweyo ukudibanisa kwizibuko lemveliso yemveliso.
I-Combo PON OLT protocol ibandakanya iiseti ezimbini zeprotocol, i-GPON kunye ne-XGPON, kunye neenkcukacha ezininzi.Kukho i-N1, i-N2a, i-D1, i-D2 kunye nezinye iinkcukacha zebhajethi yekhonkco.Ngamagama alula, ukwenzela ukuba uhambelane ne-28dB kunye ne-32dB uhlahlo lwabiwo-mali lwe-GPON B + kunye ne-C + ye-link yendabuko, i-XG (S) -PON ehambelana nebhajethi yekhonkco efanayo iyona nto ifanelekileyo ekuphuculeni kakuhle kwe-GPON kwi-NGPON.Le yinkcazo ye-D1 kunye ne-D2 ehambelana ne-Combo PON.
Kwiminyaka embalwa edlulileyo, inkqubo yokuthunyelwa kwe-hybrid ehlanganisiweyo yothungelwano lwe-Combo PON iye yacotha.Esinye sezizathu eziphambili kukuvuthwa kokubonelela nge-fiber-fiber bidirectional optical device kwicala le-Combo PON OLT, ngokukodwa ukuvuthwa kwezixhobo eziphezulu zebhajethi ye-optical.isidanga.Kwangexesha elide, izinga lemveliso yeenkampani ze-optical device kwi-Quad-OSA ephezulu ijongene nemingeni emikhulu.Ukuze kukhuthazwe ukusetyenziswa kwe-Combo PON, onke amaqela kwi-chain chain chain ayeke kwaye amkele isicwangciso sotshintsho sokunciphisa i-N2a. ukuba 31dB.Nangona kunjalo, kwiinkampani ezininzi ze-optical device eziphuhlisa iimveliso ze-PON, imveliso ye-N2a-ethobelayo yeemveliso ze-Quad-OSA isephantsi koxinzelelo, kwaye imveliso ye-32 dB D2 yezixhobo ezibonakalayo iphantsi.
Ngakolunye uhlangothi, kwinqanaba lesicelo, abaqhubi baye balindela ukukhula ngokukhawuleza kwebhajethi ephezulu ye-optical device / iimodyuli ze-optical.Kwi-2018 China Optical Network / FTTH Forum ebanjwe eBeijing ngoJuni kulo nyaka, abaqhubi abafana ne-China Mobile kunye ne-China Telecom basafuna ngokucacileyo ukuba izixhobo ze-D2 optical / iimodyuli ze-optical zenza i-chain chain supply ekhulile ukuxhasa ukugubungela ngokupheleleyo i-Combo PON.