Njengoko sonke sisazi, i-teknoloji ye-teknoloji iphumelele izinto ezininzi ezimangalisayo kwi-2018, kwaye kuya kubakho amathuba ahlukeneyo kwi-2019, elindelwe ixesha elide.Umphathi wezobuchwepheshe we-Inphi, uGqr Radha Nagarajan, ukholelwa ukuba i-data data data center interconnect. (DCI) imakethi, enye yecandelo lezobuchwephesha, iya kutshintsha kwakhona kwi-2019. Nazi izinto ezintathu ezilindele ukuba zenzeke kwiziko ledatha kulo nyaka.
1.Ukubola ngokwejografi kumaziko edatha kuya kuxhaphaka ngakumbi
Ukusetyenziswa kweziko leenkcukacha kufuna inkxaso eninzi yendawo ebonakalayo, kubandakanywa iziseko ezifana namandla kunye nokupholisa.Iziko leData ye-geo-decomposition iya kuba yinto eqhelekileyo njengoko kuya kuba nzima ngakumbi ukwakha amaziko amakhulu, aqhubekayo, amakhulu edatha.Ukubola ngundoqo kwi-metropolitan iindawo apho amaxabiso omhlaba aphezulu. Unxibelelwano lwe-bandwidth enkulu lubalulekile ekudibaniseni la maziko edatha.
I-DCI-Campus:La maziko edatha ahlala edityaniswa kunye, umzekelo kwindawo yekhampasi. Umgama uvame ukukhawulelwa phakathi kwe-2 kunye neekhilomitha ze-5. Ngokuxhomekeke kubukho befiber, kukho kwakhona ukugqithiswa kwe-CWDM kunye ne-DWDM ikhonkco kule migama.
DCI-Edge:Olu hlobo loxhulumaniso luvela kwi-2 km ukuya kwi-120 km. Ezi khonkco ziqhagamshelwe ngokukodwa kumaziko edatha asasazwayo ngaphakathi kwendawo kwaye ngokuqhelekileyo zixhomekeke kwimithintelo ye-latency.Izinketho zeteknoloji ye-DCI optical ziquka ukufumanisa ngokuthe ngqo kunye nokuhambelana, zombini ezo ziphunyezwa ngokusebenzisa i-DWDM. ifomathi yokuhanjiswa kwi-fiber-optic C-band (i-192 THz ukuya kwi-196 THz ifestile) .Ifomati yokulinganisa ngokuthe ngqo i-amplitude i-amplitude, ineskimu esilula sokufumanisa, isebenzisa amandla aphantsi, iindleko eziphantsi, kwaye ifuna imbuyekezo yangaphandle yokusabalalisa kwiimeko ezininzi. I-100 Gbps, i-4-level pulse amplitude modulation (PAM4), ifomathi yokufumanisa ngokuthe ngqo yindlela eneendleko ze-DCI-Edge izicelo. ifomathi yokumodareyitha.Kwisizukulwana esilandelayo se-400-Gbps (ngobude be-wavelength) iinkqubo ze-DCI, i-60-Gbaud, i-16-QAM ifomathi ehambelanayo yi-competitor ehamba phambili.
DCI-Metro/Long Haul:Olu didi lwefayibha lungaphaya kwe-DCI-Edge, kunye nekhonkco lomhlaba ukuya kwiikhilomitha ezingama-3,000 kunye nomgangatho omde wolwandle. Kwakhona i-amplitude kunye ne-modulated phase, ifuna i-laser ye-oscillator yendawo yokuchongwa, idinga ukucutshungulwa kwesignali yedijithali eyinkimbinkimbi, isebenzisa amandla amaninzi, inoluhlu olude, kwaye ibiza ngaphezu kokufunyanwa ngokuthe ngqo okanye iindlela ze-NRZ.
2.Iziko ledatha liya kuqhubeka nokuphuhlisa
Ukudibanisa i-bandwidth enkulu kubaluleke kakhulu ukudibanisa la maziko edatha.Ngale nto engqondweni, i-DCI-Campus, i-DCI-Edge kunye ne-DCI-Metro / i-Long Haul data centers iya kuqhubeka nokuphuhlisa.Kwiminyaka embalwa edlulileyo, intsimi ye-DCI ibe ingqwalasela. yengqalelo yababoneleli benkqubo yeDWDM yemveli.Iimfuno ezikhulayo zebhanwidth zababoneleli ngenkonzo yelifu (CSPs) ezibonelela ngesoftware-njengenkonzo (i-SaaS), iqonga-njengenkonzo (i-PaaS) kunye neziseko-njengenkonzo (IaaS) amandla aqhuba iinkqubo ezahlukeneyo zamehlo zokudibanisa i-CSP data center networks Layeriiswitshikwayeiirotha.Namhlanje, oku kufuneka kusebenze kwi-100 Gbps. Ngaphakathi kwiziko ledatha, i-cabling ye-copper (DAC) edibeneyo, i-cable optical esebenzayo (AOC) okanye i-100G "i-gray" optics ingasetyenziswa.Ukudibanisa nezixhobo zedatha yedatha (i-campus okanye i-edge / izicelo ze-metro), inketho yodwa enayo kutsha nje kufumaneka indlela egcweleyo, ehambelanayo esekwe kuphinda-phindo ekumgangatho ophantsi.
Ngokutshintshela kwi-ecosystem ye-100G, i-architecture yenethiwekhi yedatha yedatha iye yavela kwimodeli yedatha yedatha yemveli.Zonke ezi zixhobo zedatha zifumaneka kwindawo enye enkulu.“iziko data elikhulu”I-campus.Ii-CSP ezininzi ziye zadityaniswa kwi-architecture yendawo esasazwayo ukufezekisa isikali esifunekayo kunye nokubonelela ngeenkonzo zefu ezifumaneka kakhulu.
Iindawo zamaziko eenkcukacha ziqhele ukubekwa kufutshane nemimandla yemetropolitan enabantu abaninzi abaxineneyo ukuze kubonelelwe ngeyona nkonzo ilungileyo (ngokulibaziseka nokufumaneka) kubathengi abakufutshane kakhulu kule mimandla. Uyilo lwengingqi lwahluke kancinane phakathi kwee-CSP, kodwa lubandakanya “iisango” zengingqi ezingafunekiyo. okanye “ii-hubs”.La “masango” okanye “ii-hubs” ziqhagamshelwe kuthungelwano lwendawo ebanzi ye-CSP (WAN) umqolo (kunye neendawo ezisekupheleni ezinokuthi zisetyenziselwe uontanga-kunye, uthutho lomxholo wendawo okanye uthutho lwenkwili). Ezi “ amasango” okanye “ii-hubs” ziqhagamshelwe kuthungelwano lwendawo ebanzi ye-CSP (WAN) umqolo (kunye neziza ezingqamene nezinokuthi zisetyenziselwe iontanga-to-peer, uthutho lomxholo wengingqi okanye uthutho lwenkwili). Ekubeni indawo ifuna ukwandiswa, iya kulula ukufumana izibonelelo ezongezelelweyo kwaye zidibanise kwisango lommandla. Oku kuvumela ukwanda ngokukhawuleza kunye nokukhula kwendawo xa kuthelekiswa neendleko eziphezulu kakhulu zokwakha iziko elitsha ledatha enkulu kunye nexesha elide lokwakha, kunye nenzuzo eyongezelelweyo yokwazisa Ingqikelelo yeendawo ezahlukeneyo ezikhoyo (AZ) kwindawo enikiweyo.
Utshintsho olusuka kulwakhiwo lwedatha enkulu ukuya kwindawo luzisa imiqobo eyongezelelweyo ekufuneka iqwalaselwe xa ukhetha isango kunye neendawo zoncedo lwedatha.Ngokomzekelo, ukuqinisekisa amava omthengi ofanayo (ukusuka kumbono we-latency), umgama omkhulu phakathi kwayo nayiphi na idatha emibini. amaziko (ngesango likawonke-wonke) kufuneka abe ngumda.Olunye uqwalaselo kukuba inkqubo ye-grey optical ayisebenzi kakuhle ukudibanisa izakhiwo zedatha ezicacileyo ngaphakathi kwendawo efanayo. Ukucinga ngale miba, iqonga lanamhlanje elihambelanayo alifanelekanga izicelo ze-DCI.
I-PAM4 ifomathi yokumodareyitha inikeza ukusetyenziswa kwamandla aphantsi, i-footprint ephantsi, kunye neendlela zokubona ngokuthe ngqo.Ngokusebenzisa i-silicon photonics, i-transceiver ye-dual-carrier kunye ne-PAM4 Application Specific Integrated Circuit (ASIC) yaphuhliswa, idibanisa iprosesa yesignali yedijithali edibeneyo (DSP) kunye phambili ukulungiswa kwempazamo (FEC) .Kwaye uyifake kwi-QSFP28 form factor. IsiphumotshintshaImodyuli edibeneyo inokwenza ukuhanjiswa kwe-DWDM kwikhonkco ye-DCI eqhelekileyo, kunye ne-4 Tbps nge-fiber pair kunye ne-4.5 W nge-100G.
3.I-Silicon photonics kunye ne-CMOS iya kuba ngundoqo wophuhliso lwemodyuli ye-optical
Ukudityaniswa kwe-silicon photonics yee-optics ezidityanisiweyo kakhulu kunye ne-high-speed silicon complementary metal oxide semiconductors (CMOS) yokulungiswa komqondiso kuya kudlala indima ekuguqukeni kweemodyuli ze-optical ezinexabiso eliphantsi, eliphantsi, elitshintshayo.
I-silicon photonic chip edityaniswe kakhulu yintliziyo yemodyuli eplaggable.Xa kuthelekiswa ne-indium phosphide, iqonga lesilicon CMOS liyakwazi ukungena kwi-wafer-level optics kubukhulu obuyi-200 mm kunye ne-300 mm ubukhulu bewafer. zaye zakhiwa ngokudibanisa i-germanium epitaxy kwi-platform ye-silicon ye-CMOS esemgangathweni.Ukongezelela, i-silicon dioxide kunye ne-silicon nitride esekelwe kumacandelo angadityaniswa ukuze enze umahluko ophantsi we-refractive index kunye nobushushu obungenamvakalelo.
KuMzobo 2, indlela yokuphuma kwe-silicon photonic chip iqulethe iperi ye-modulators ehambayo ye-Mach Zehnder (MZM), enye kwi-wavelength nganye. isebenza njenge-multiplexer ye-DWDM.I-silicon i-MZM efanayo ingasetyenziselwa kuzo zombini iifomathi ze-NRZ kunye ne-PAM4 kunye neempawu ezahlukeneyo zokuqhuba.
Njengoko iimfuno ze-bandwidth yeziko lothungelwano lwedatha ziqhubeka nokukhula, uMthetho kaMoore ufuna ukuqhubela phambili ekutshintsheni iitshiphusi. Oku kuya kwenza ukuba itshintshakwayeumzilaamaqonga ukugcinatshintshaukulingana kwesiseko setshiphu ngelixa kusandiswa umthamo wezibuko ngalinye.Isizukulwana esilandelayotshintshaiitshiphusi zenzelwe i-port nganye ye-400G.A iprojekthi ebizwa ngokuba yi-400ZR yaqaliswa kwi-Optical Internet Forum (OIF) ukulungelelanisa iimodyuli ze-DCI zesizukulwana esilandelayo kunye nokudala i-ecosystem ye-optical ecosystem yabaxhasi.Le ngcamango ifana ne-WDM PAM4, kodwa yandisa ukuxhasa iimfuno ze-400-Gbps.