Njengamanje, amamojula e-IO e-SFP28/SFP56 kanye ne-QSFP28/QSFP56 asetshenziswa kakhulu ukuxhuma amaswishi namaswishi kanye namaseva kumakhabhinethi ajwayelekile emakethe. Eminyakeni yesilinganiso sama-56Gbps, ukuze kulandelwe ukuminyana kwamachweba aphezulu, abantu bathuthukise imojula ye-QSFP-DD IO ukuze kufinyelelwe umthamo wechweba ongu-400G. Ngokuphindaphindwa kwesilinganiso sesiginali, umthamo wechweba wemojula ye-QSFP DD uphindwe kabili waba yi-800G, ebizwa ngokuthi i-OSFP112. Ihlanganiswe neziteshi eziyisishiyagalombili zesivinini esikhulu, futhi izinga lokudlulisela lesiteshi esisodwa lingafinyelela ku-112G PAM4. Izinga lokudlulisela eliphelele lephakheji lonke lifinyelela ku-800G. Ukubuyela emuva kuhambisana ne-OSFP56, uma kuqhathaniswa nesikhathi esifanayo sokuphinda isivinini kabili, kuhlangatshezwane nezinga lokuhlangana le-IEEE 802.3CK; Ngenxa yalokho, ukulahlekelwa kwesixhumanisi kuzokhula kakhulu futhi ibanga lokudlulisela lemojula ye-CABLE IO yethusi engasebenzi lizoncishiswa kakhulu. Ngokusekelwe emikhawulweni engokoqobo, ithimba le-IEEE 802.3CK, elakha imininingwane ye-112G, linciphise ubude obukhulu besixhumanisi sekhebula lethusi laba amamitha ama-2 ngesisekelo sekhebula lethusi le-56G IO ngesivinini esiphezulu samamitha ama-3.
Ibhodi yokuhlola ye-QSFP-DD X 2 port 1.6Tbps
I-QQSFP -DD 800G iqhamuka emoyeni
Amakhono esikhungo sedatha anqunywa ngamaseva, amaswishi, kanye nezici zokuxhumanisa ezilinganiselana futhi ziqhubekiselana ekukhuleni okusheshayo, okungabizi kakhulu. Ubuchwepheshe bokushintshana bube yiwona mandla amakhulu okushayela iminyaka eminingi. Njengoba i-OFC2021 iphela muva nje, abakhiqizi bezokuxhumana be-optical abajwayelekile njenge-Intel, i-Finisar, i-Xechuang, i-Opticexpress kanye ne-New Yisheng bonke babonise amamojula we-optical ochungechunge lwe-800G. Ngesikhathi esifanayo, izinkampani ze-optical chip zaphesheya kwezilwandle zibonise imikhiqizo ye-chip ephezulu ye-800G, futhi uhlelo lwendabuko lungase lube nendawo enkathini ye-800G. Sicabanga ukuthi umzila wobuchwepheshe be-optical module ye-800G usecacile kakhulu, i-800GDR8 kanye ne-2*FR4 zinamandla amakhulu kakhulu; Njengoba izinkampani ze-optical module ye-OFC2021 ezijwayelekile kanye ne-optical chip ziqalise imikhiqizo emisha ngokulandelana, i-node yesikhathi kanye nomzila wobuchwepheshe obujwayelekile wokuthuthukiswa kwe-800G sekuchaziwe. Izinga lomkhakha we-optical module yesikhungo sedatha liyaqhubeka nokuphindaphinda, futhi isici sokukhula kwesikhathi eside sesinqunyiwe. Sikholelwa ukuthi enkathini yokwenziwa kwedijithali kanye nobuhlakani, ukuqhuma okuqhubekayo kwethrafikhi yesikhungo sedatha kulethe isidingo sokuphindaphinda okuqhubekayo kwamamojula optical. Indlela yobuchwepheshe ecacile ye-800G ikhombisa ukuthi i-400G izoba nkulu.
Uma izinga lesignali le-25Gbps lithuthukiswa liye ezingeni lesignali le-56Gbps lamanje, ngenxa yokwethulwa kohlelo lwesignali lwe-PAM4 (Pulse Amplitude Modulation) (iqembu le-IEEE 802.3BS), iphuzu eliyisisekelo lemvamisa yesignali edluliselwe kusixhumanisi se-Serdes Ethernet likhuphuka kuphela lisuka ku-12.89ghz liye ku-13.28ghz, futhi iphuzu eliyisisekelo lemvamisa yesignali alishintshi kakhulu. Izinhlelo ezingasekela ukudluliswa okuhle kwesignali ye-25Gbps zingathuthukiswa zibe amazinga esignali ye-56Gbps ngokulungiswa okuncane. Ukuthuthukiswa kusuka ezingeni lesignali le-56Gbps kuya ezingeni lesignali le-112Gbps akulula kangako. Uhlelo lwesignali lwe-PAM4 olwethulwa lapho izinga lesilinganiso le-56Gbps lakhiwa cishe luzophinde lusetshenziswe kumazinga e-112Gbps. Lokhu kushintsha iphuzu eliyisisekelo lemvamisa yesignali ye-112Gbps Ethernet libe yi-26.56ghz, okuphindwe kabili kunezinga lesignali le-56Gbps. Ekuzalweni kwesilinganiso se-112Gbps, izidingo zobuchwepheshe bekhebula zizobhekana nokuhlolwa okunzima kakhulu. Njengamanje, ikhebula lesivinini esiphezulu le-400Gbps lixhunywe kumkhiqizo. Imikhiqizo evuthiwe ekuqaleni ikakhulukazi yimikhiqizo yangaphandle, njenge-TE, i-LEONI, i-MOLEX, i-Amphenol, njll. Imikhiqizo yasekhaya nayo iqale ukudlula eminyakeni yamuva nje. Kusukela enkambisweni yokukhiqiza, imishini nezinto zokwakha, senze izinto ezintsha eziningi. Njengamanje, kunezinkampani zasekhaya ezikhiqiza ikhebula lethusi le-800G, kodwa asiqoqanga okuningi. I-Shenzhen Hongteda, i-Dongguan Zhongyou Electronics, i-Dongguan Jinxinuo, i-Shenzhen Simic Communication, njll., kodwa ubunzima bobuchwepheshe obukhona busengxenyeni yentambo engenalutho. Njengamanje, kunzima kakhulu ukuxazulula amapharamitha okusebenza kagesi aphezulu kanye nezidingo zobumnene bokuxhuma izintambo zekhebula ngesikhathi esisodwa. Ikhebula lethusi le-DAC lizobhekana nesikhathi sokuthuthuka okusheshayo. Kunabakhiqizi bezintambo bendawo abambalwa kuphela.
Imakethe ishintsha ngokushesha, futhi izothuthuka ngokushesha okukhulu esikhathini esizayo. Izindaba ezinhle ukuthi kwenziwe intuthuko ebalulekile nethembisayo, kusukela ezinhlanganweni ezijwayelekile kuya embonini, ukuze kuvunyelwe izikhungo zedatha ukuthi zithuthele ku-400GB naku-800GB. Kodwa ukususa izithiyo zobuchwepheshe kuyinselele encane nje. Ingxenye yesibili yisikhathi. Uma kwenzeka ukwahlulela kabi, izindleko zizoba phezulu. Ingxenye eyinhloko yesikhungo sedatha sasekhaya esikhona yi-100G. Phakathi kwezikhungo zedatha ze-100G ezisetshenzisiwe, ama-25% ayithusi, ama-50% ayi-fiber yemodi eminingi, kanti ama-25% ayi-fiber yemojuli eyodwa. Lezi zinombolo zesikhashana aziqondile, kodwa isidingo esikhulayo se-bandwidth, umthamo, kanye nokubambezeleka okuphansi kuqhuba ukufuduka kwesivinini senethiwekhi esisheshayo. Ngakho-ke minyaka yonke, ukuzivumelanisa nezimo kanye nokusebenza kahle kwezikhungo zedatha yamafu amakhulu kuyisilingo. Njengamanje, i-100GB igcwele imakethe, kanti kulindeleke ukuthi i-400GB ngonyaka ozayo. Naphezu kwalokhu, ukugeleza kwedatha kusaqhubeka nokwanda, ingcindezi ezikhungweni zedatha izoqhubeka nokwanda, ngemuva kwe-400G, i-QSFP-DD 800G isifikile.
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Isikhathi sokuthunyelwe: Agasti-16-2022
