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, isixhobo se-optical esine-port ye-Combo PONOLT, 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 ye-10G 1577nm EML laser kunye ne-1270nm APD, i-WDM coupling isetyenziselwa isibini kwi-port optical optical.
ICombo PONOLTIprothokholi ibandakanya iiseti ezimbini zeprothokholi, iGPON kunye neXGPON, eneenkcukacha 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 kukukhula kwekhonkco lokubonelela nge-fiber enye ye-bidirectional optical device kwi-Combo PON.OLTicala, ngokukodwa ukukhula kwezixhobo eziphezulu zebhajethi ye-optical. isidanga. Kwangexesha elide, izinga lemveliso yeenkampani ze-optical device kwi-high-standard Quad-OSA ijongene nemingeni enkulu.Ukuze kukhuthazwe ukusetyenziswa kwe-Combo PON, onke amaqela kwikhonkco loshishino aphazamise kwaye amkela 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.