Yarjejeniyar tushen tushen QSFP-DD da yawa tana gane masu haɗin gani guda biyu: CS, SN, da MDC.
Mai haɗin MDC na Conec na US yana ƙara ƙima ta kashi uku sama da masu haɗin LC.MDC mai fiber biyu an kera shi tare da fasahar ferrule-mm 1.25.
Daga Patrick McLaughlin
Kusan shekaru huɗu da suka gabata, ƙungiyar masu siyar da 13 sun kafa QSFP-DD (Quad Small Form-factor Pluggable Double Density) Ƙungiya mai tarin yawa (MSA), tare da burin ƙirƙirar mai ɗaukar hoto na QSFP mai dumbin yawa.A cikin shekarun da aka kafa ta, ƙungiyar MSA ta ƙirƙira ƙayyadaddun bayanai don QSFPs don tallafawa aikace-aikacen Ethernet na 200- da 400-Gbit/sec.
Fasahar ƙarni na baya, ƙirar QSFP28, tana goyan bayan aikace-aikacen 40- da 100-Gbit Ethernet.Suna fasalta hanyoyin lantarki guda huɗu waɗanda zasu iya aiki a 10 ko 25 Gbits/sec.Ƙungiya ta QSFP-DD ta kafa ƙayyadaddun bayanai don hanyoyi takwas waɗanda ke aiki har zuwa 25 Gbits / s ko 50 Gbits / sec - suna goyan bayan 200 Gbits / sec da 400 Gbits / sec, bi da bi, a cikin jimillar.
A cikin Yuli 2019 ƙungiyar QSFP-DD MSA ta fitar da sigar 4.0 na Ƙayyadaddun Faɗin Gudanarwa na gama-gari (CMIS).Ƙungiyar ta kuma fitar da nau'in 5.0 na ƙayyadaddun kayan aikinta.Kungiyar ta bayyana a wancan lokacin, "Yayin da tallafi na 400-Gbit Ethernet ke girma, CMIS an tsara shi don rufe nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan abubuwa, ayyuka da aikace-aikace, kama daga tarurrukan na USB na jan ƙarfe zuwa madaidaicin DWDM. ] modules.Ana iya amfani da CMIS 4.0 azaman hanyar sadarwa ta gama gari ta wasu nau'ikan nau'ikan nau'ikan 2-, 4-, 8- da 16, ban da QSFP-DD."
Bugu da ƙari, ƙungiyar ta lura cewa sigar 5.0 na ƙayyadaddun kayan aikinta “ya haɗa da sabbin masu haɗin gani, SN da MDC.QSFP-DD shine babban tsari na cibiyar bayanai na layin 8.Tsarin da aka ƙera don ƙirar QSFP-DD na iya zama baya-jituwa tare da abubuwan sigar QSFP na yanzu kuma suna ba da matsakaicin matsakaici ga masu amfani na ƙarshe, masu zanen dandamali na cibiyar sadarwa da masu haɗawa. ”
Scott Sommers, memba mai kafa kuma shugaban kungiyar QSFP-DD MSA, yayi sharhi, "Ta hanyar haɗin gwiwar dabarun tare da kamfanonin mu na MSA, muna ci gaba da gwada haɗin gwiwar samfuran masu siyarwa da yawa, masu haɗawa, cages da igiyoyin DAC don tabbatar da ingantaccen aiki. yanayin muhalli.Muna ci gaba da himma don haɓakawa da samar da ƙira na gaba waɗanda ke tasowa tare da canjin yanayin fasaha. ”
Mai haɗin SN da MDC sun haɗu da mai haɗin CS azaman musaya na gani da ƙungiyar MSA ta gane.Duk ukun su ne masu haɗin duplex waɗanda aka siffanta su da ƙaramin nau'i mai ƙima (VSFF).
Mai haɗin MDC
US Conecyana ba da haɗin MDC alamar EliMent.Kamfanin ya bayyana EliMent a matsayin "an tsara shi don ƙare multimode da igiyoyin fiber guda ɗaya har zuwa 2.0 mm a diamita.An kera mai haɗin MDC tare da ingantacciyar fasaha ta 1.25-mm ferrule da aka yi amfani da ita a cikin daidaitattun masu haɗin gani na LC na masana'antu, tare da saduwa da buƙatun asarar shigar IEC 61735-1.
US Conec ya ci gaba da yin bayani, “MSA da yawa masu tasowa sun ayyana gine-ginen tashar jiragen ruwa waɗanda ke buƙatar haɗin haɗin gani biyu tare da ƙaramin sawun ƙafa fiye da mai haɗin LC.Rage girman mai haɗin MDC zai ba da damar transceiver-array guda ɗaya don karɓar kebul na facin MDC da yawa, waɗanda ake samun dama ga ɗaiɗaiku kai tsaye a wurin mai ɗaukar hoto.
"Sabon tsarin zai goyi bayan kebul na MDC guda huɗu a cikin sawun QSFP da kebul na MDC guda biyu a cikin sawun SFP.Ƙara yawan mai haɗawa a module/panel yana rage girman kayan aiki, wanda ke haifar da raguwar babban jari da kashe kuɗin aiki.Gidan raka'a 1-rack zai iya ɗaukar filaye 144 tare da masu haɗin LC duplex da adaftan.Yin amfani da ƙaramin haɗin MDC yana ƙara ƙidayar fiber zuwa 432 a cikin sararin 1 RU iri ɗaya.
Kamfanin ya ƙaddamar da ƙaƙƙarfan mahalli na mai haɗin MDC, gyare-gyare mai mahimmanci, da tsayin haɗin gwiwa - yana cewa waɗannan halayen sun ba MDC damar wuce buƙatun Telcordia GR-326 iri ɗaya kamar mai haɗin LC.MDC ta haɗa da takalmin ƙwanƙwasa wanda ke ba masu sakawa damar sakawa da fitar da mai haɗawa a cikin matsatsun wurare, mafi ƙayyadaddun wurare ba tare da shafar masu haɗin maƙwabta ba.
MDC kuma yana ba da damar jujjuyawar polarity mai sauƙi, ba tare da fallasa ko murɗa zaruruwa ba."Don canza polarity," in ji US Conec, "jawo taya daga mahallin mahaɗin, juya taya 180 digiri, kuma sake haɗa taron taya a kan mahallin mahaɗin.Alamun polarity a saman da gefen mai haɗin suna ba da sanarwar jujjuyar polarity mai haɗin haɗi."
Lokacin da US Conec ya gabatar da mai haɗin MDC a watan Fabrairun 2019, kamfanin ya ce, "Wannan ƙirar haɗin gwiwar zamani tana haifar da sabon zamani a cikin haɗin fiber biyu ta hanyar kawo ƙarancin da bai dace ba, sakawa mai sauƙi / cirewa, daidaitawar filin da mafi kyau duka. Ayyukan mai ɗaukar nauyi zuwa alamar EliMent mai haɗin fiber guda ɗaya.
"Masu adaftar MDC mai tashar tashar jiragen ruwa guda uku sun dace kai tsaye cikin daidaitattun buɗewar panel don masu adaftar LC na duplex, ƙara yawan fiber da kashi uku," in ji US Conec."Sabon tsarin zai goyi bayan kebul na MDC guda hudu a cikin sawun QSFP da kebul na MDC guda biyu a cikin sawun SFP."
CS da SN
Masu haɗin CS da SN samfuran neAbubuwan da suka ci gaba na Senko.A cikin mai haɗin CS, ferrules suna zama gefe-da-gefe, kama da shimfidu zuwa mai haɗin LC amma ƙarami cikin girma.A cikin mai haɗin SN, ferrules an jera su sama da ƙasa.
Senko ya gabatar da CS a cikin 2017. A cikin wata farar takarda da aka haɗa tare da eOptolink, Senko ya bayyana, "Ko da yake ana iya amfani da masu haɗin LC duplex a cikin QSFP-DD transceiver modules, bandwidth watsawa ko dai yana iyakance ga ƙirar injin WDM guda ɗaya ko dai ta amfani da 1: 4 mux/demux don isa watsa 200-GbE, ko 1:8 mux/demux don 400 GbE.Wannan yana ƙara ƙimar transceiver da buƙatun sanyaya akan transceiver.
"Ƙananan sawun mai haɗawa na masu haɗin CS yana ba da damar haɗa biyu daga cikinsu a cikin tsarin QSFP-DD, wanda masu haɗin LC duplex ba za su iya cim ma ba.Wannan yana ba da damar ƙirar injin WDM dual ta amfani da 1: 4 mux / demux don isa 2 × 100-GbE watsawa, ko 2 × 200-GbE watsawa akan mai ɗaukar QSFP-DD guda ɗaya.Baya ga masu jigilar QSFP-DD, mai haɗin CS kuma yana dacewa da OSFP [octal small form-factor pluggable] da COBO [Consortium for On Board Optics] modules."
Dave Aspray, Senko Advanced Components' Manajan tallace-tallace na Turai, kwanan nan yayi magana game da amfani da masu haɗin CS da SN don isa ga sauri kamar 400 Gbits/sec."Muna taimakawa wajen rage sawun manyan cibiyoyin bayanai ta hanyar rage masu haɗin fiber," in ji shi.“Cibiyoyin bayanai na yanzu galibi suna amfani da haɗin haɗin LC da MPO azaman mafita mai girma.Wannan yana adana sarari da yawa idan aka kwatanta da na al'ada SC da masu haɗin FC.
"Ko da yake masu haɗin MPO na iya ƙara ƙarfin aiki ba tare da ƙara sawun sawun ba, suna da wahala don ƙira da ƙalubalen tsaftacewa.Yanzu muna ba da kewayon masu haɗin kai masu ɗorewa waɗanda suka fi ɗorewa a cikin filin kamar yadda aka tsara su ta amfani da ingantattun fasaha, suna da sauƙin sarrafawa da tsaftacewa, kuma suna ba da fa'idodi masu yawa na ceton sarari.Babu shakka wannan ita ce hanya ta gaba.”
Senko ya bayyana mai haɗin SN a matsayin mafita mai girma-yawan duplex tare da farar 3.1-mm.Yana ba da damar haɗin zaruruwa 8 a cikin mai jujjuyawar QSFP-DD.
Aspray ya ci gaba da cewa, "Masu fassara na tushen MPO na yau sune kashin bayan bayanan cibiyar bayanan, amma ƙirar cibiyar bayanai tana canzawa daga tsarin matsayi zuwa samfurin ganye da kashin baya," in ji Aspray."A cikin samfurin ganye-da-kashin baya, ya zama dole a fitar da tashoshi guda ɗaya don haɗa maɓallan kashin baya zuwa kowane maɓalli na ganye.Yin amfani da masu haɗin MPO, wannan yana buƙatar faci na daban tare da ko dai kaset ɗin breakout ko igiyoyi masu fashewa.Saboda an riga an watse tushen masu amfani da SN ta hanyar samun masu haɗin SN guda 4 a ma'auni na transceiver, ana iya yin su kai tsaye.
Canje-canjen da masu aiki ke yi ga cibiyoyin bayanan su a yanzu na iya hana su gaba gaba daga karuwar buƙatun da ba makawa, wanda shine dalilin da ya sa yana da kyau masu aiki suyi la'akari da tura manyan hanyoyin magance manyan matsaloli kamar masu haɗin CS da SN - koda kuwa ba lallai bane. zuwa tsarin cibiyar bayanan su na yanzu."
Patrick McLaughlinshine babban editan mu.
Lokacin aikawa: Maris 13-2020
