Ngokuqalisa ukusebenzisa amasu “e-Broadband China” kanye “nokwenyusa isivinini kanye nokunciphisa imali”, amakhono enethiwekhi ye-broadband engaguquki yaseShayina aye athuthukiswa ngokuqhubekayo; i-broadband yomsebenzisi ishintshile isuka ku-10M nangaphansi yaya ku-50M / 100M / 200M, futhi isithuthukele ku-Gigabit; Ingqalasizinda yenethiwekhi ye-broadband Ukukhuthaza ngokubambisana ngevidiyo enencazelo ephezulu nezinsizakalo ze-inthanethi.
Ukuze uthole ukweqa kusuka ku-“100M” kuya ku-“Giga”, ubuchwepheshe be-PON budinga ukuthuthukiswa ukuze bufinyelele ku-10G PON. Esinye sezithiyo eziyinhloko esikalini sokuthunyelwa kwe-10G PON yizindleko. Izindleko zemishini ye-PON ye-10G ihlanganisa izindleko zamamojula optical, chipsets, kanye ne-PCD yokupakisha. Izindleko zamamojula we-optical kanye nama-chipsets yisici esiyinhloko.
Isivivinyo sokutholwa kwe-PON sika-2018 10G se-China Telecom esimaphakathi kanye nokubhida kufaka phakathi izingxenye ezintathu ikakhulukazi: i-GPON, i-10G-EPON, kanye nemishini ye-XG-PON. Iqoqo lemishini ye-GPON ye-China Mobile ka-2018 ihlanganisa i-GPON, i-XG-PON, imishini ye-XGS-PON. I-XGS-PON ingokokuqala.
I-GPON ithuthukiselwe ku-XGPON1 noma i-XGSPON. Njengamanje, isixazululo esijwayelekile emakethe yisixazululo se-multiplexer sangaphandle. Kulesi sixazululo, amasiginali we-GPON kanye ne-XGPON1 / XGSPON aphindwaphindwa kumodi ye-WDM ngokungeza ikhadi lebhodi le-XGPON1 / XGSPON, bese i-multiplexer yangaphandle idluliselwa kubasebenzisi abakude. Umgomo walesi sixazululo ulula uma kuqhathaniswa, kodwa kuningi okungalungile njengokuvula isikhathi eside sokuthuthukisa, izindleko eziphezulu, izinto eziningi ezisekelayo, kanye nomsebenzi omkhulu wendawo. Ngaphezu kwalokho, ukwethulwa kwe-multiplexer yangaphandle kuzophinde ilethe ukulahleka kwamandla okubonakalayo okwengeziwe, okuzoba nomthelela. Izingozi zebhizinisi lekhasimende elikhona.
I-Combo PON iyinhlanganisela ye-GPON ne-XGPON1 / XGSPON. Isimiso saso siwukubona ngesikhathi esifanayo ukudluliswa okuzimele nokwamukelwa kwe-GPON kanye ne-XGPON1 / XGSPON amasignali optical module optical, kanye nokuhlanganisa amaza amaza ama-4 ahlukene ngokusebenzisa idivayisi ye-WDM eyakhelwe ngaphakathi.Inikeza isikhombimsebenzisi esisodwa se-fiber optical, esingahambisana nayo. amasevisi enethiwekhi ye-GPON ekhona kanye ne-XGPON1 noma i-XGSPON amasevisi ngesikhathi esifanayo, ukugwema izinguquko esakhiweni senethiwekhi esikhona kanye nokwengeza indawo yegumbi eyengeziwe, ngaleyo ndlela kuzuzwe ukuthuthukiswa kwe-GPON okungenazihibe nokusebenza kahle.
Umdwebo wesistimu ye-Combo-PON
I-Quad-OSA, idivayisi yokubona enezimbobo ezine ye-Combo PONOLT, ihlanganisa amasethi amabili ama-transceiver kudivayisi eyodwa yokubona: i-GPON yendabuko engu-2.5G 1490nm DFB laser kanye ne-1310nm APD kanye ne-XGPON's 10G 1577nm EML laser kanye ne-1270nm APD, ukuhlanganisa kwe-WDM kusetshenziselwa ukuxhumanisa nokuphumayo kwe-optical.
I-Combo PONOLTIphrothokholi ibandakanya amasethi amabili emithethonqubo, i-GPON ne-XGPON, enezici eziningi. Kukhona i-N1, i-N2a, i-D1, i-D2 neminye imininingwane yesabelomali sesixhumanisi. Ngamagama alula, ukuze uhambisane nesabelomali se-28dB ne-32dB yezixhumanisi zendabuko ze-GPON B + ne-C +, i-XG (S) -PON ehambisana nesabelomali sesixhumanisi esifanayo yiyona ehamba phambili ekuthuthukisweni okushelelayo kwe-GPON ku-NGPON. Lokhu ukucaciswa kwe-D1 ne-D2 okuhambisana ne-Combo PON.
Eminyakeni embalwa edlule, inqubo yokuthunyelwa kwamanethiwekhi we-Combo PON ahlanganisiwe ayingxube ibihamba kancane. Esinye sezizathu eziyinhloko ukuvuthwa kochungechunge lokuhlinzekwa kwe-single-fiber bidirectional optical device ku-Combo PON.OLTohlangothini, ikakhulukazi ukuvuthwa kwebhajethi ephezulu yamadivayisi abonakalayo. iziqu. Isikhathi eside, izinga lokukhiqiza lezinkampani zemishini yokubona ezisezingeni eliphezulu ze-Quad-OSA belilokhu libhekene nezinselelo ezinkulu.Ukuze kuthuthukiswe ukusetshenziswa kwe-Combo PON, zonke izinhlangothi zochungechunge lwemboni zafaka engozini futhi zamukela uhlelo loshintsho lokunciphisa i-N2a. kwe 31db. Kodwa-ke, ezinkampanini eziningi zemishini yokubona ezakha imikhiqizo ye-PON, isivuno semikhiqizo ye-N2a-compliant Quad-OSA isengaphansi kwengcindezi, futhi ukukhiqizwa kwemishini yokubona engu-32 dB D2 iphansi.
Ngakolunye uhlangothi, ezingeni lesicelo, opharetha bebelindele ukuvuthwa okusheshayo kwebhajethi ephezulu ye-optical device / amamojula optical. Engqungqutheleni ye-China Optical Network / FTTH ka-2018 eyayise-Beijing ngoJuni kulo nyaka, opharetha abafana ne-China Mobile ne-China Telecom basadinga ngokusobala ukuthi amamojula we-D2 optical / optical module akhe uchungechunge lokuhlinzeka ngokuqhathaniswa oluvuthiwe ukusekela ukufakwa okugcwele kwe-Combo PON .