QSFP-DD ntau qhov kev pom zoo lees paub peb qhov kev sib txuas kho qhov muag: CS, SN, thiab MDC.
US Conec's MDC connector nce ceev los ntawm ib qho ntawm peb tshaj LC connectors.Ob-fiber MDC yog tsim nrog 1.25-mm ferrule technology.
Los ntawm Patrick McLaughlin
Ze li plaub xyoos dhau los, ib pawg ntawm 13 tus neeg muag khoom tau tsim QSFP-DD (Quad Small Form-factor Pluggable Double Density) ntau qhov kev pom zoo (MSA) Pawg, nrog lub hom phiaj ntawm kev tsim ob qhov ceev QSFP optical transceiver.Hauv xyoo txij li nws tau tsim, pawg MSA tau tsim cov lus qhia tshwj xeeb rau QSFPs los txhawb 200- thiab 400-Gbit / sec Ethernet daim ntawv thov.
Cov thev naus laus zis dhau los, QSFP28 modules, txhawb 40- thiab 100-Gbit Ethernet daim ntawv thov.Lawv muaj plaub txoj kab hluav taws xob uas tuaj yeem ua haujlwm ntawm 10 lossis 25 Gbits / sec.QSFP-DD pab pawg tau tsim cov kev qhia tshwj xeeb rau yim txoj kab uas ua haujlwm txog li 25 Gbits / sec lossis 50 Gbits / sec - txhawb nqa 200 Gbits / sec thiab 400 Gbits / sec, feem, hauv kev sib sau.
Thaum Lub Xya Hli 2019 pawg QSFP-DD MSA tau tso tawm version 4.0 ntawm nws Cov Kev Tswj Xyuas Kev Sib Txuas Sib Tham (CMIS).Cov pab pawg kuj tau tso tawm version 5.0 ntawm nws cov khoom siv tshwj xeeb.Cov pab pawg tau piav qhia lub sijhawm ntawd, "Raws li kev saws 400-Gbit Ethernet loj hlob, CMIS tau tsim los npog ntau yam ntawm cov qauv qauv, kev ua haujlwm thiab kev siv, xws li kev sib txuas ntawm tooj liab tooj liab mus rau coherent DWDM [dense wavelength-division multiplexing. ] modules.CMIS 4.0 tuaj yeem siv los ua ib qho kev sib cuam tshuam los ntawm lwm yam 2-, 4-, 8-, thiab 16-kab kab hauv daim ntawv, ntxiv rau QSFP-DD. "
Tsis tas li ntawd, pawg tau sau tseg tias version 5.0 ntawm nws cov khoom siv tshwj xeeb "nrog rau cov khoom siv kho qhov muag tshiab, SN thiab MDC.QSFP-DD yog qhov tseem ceeb 8-txoj kab data center module daim ntawv foos.Cov txheej txheem tsim los rau QSFP-DD modules tuaj yeem rov qab-tshaj nrog QSFP daim ntawv uas twb muaj lawm thiab muab kev yooj yim tshaj plaws rau cov neeg siv kawg, network platform tsim thiab cov koom ua ke. "
Scott Sommers, tus tsim cov tswv cuab thiab tus thawj coj ntawm QSFP-DD MSA, tau hais tias, "Los ntawm kev sib koom tes nrog peb cov tuam txhab MSA, peb txuas ntxiv mus sim kev sib cuam tshuam ntawm ntau tus neeg muag khoom 'modules, txuas, tawb thiab DAC cables kom paub tseeb tias muaj zog. ecosystem.Peb tseem mob siab rau kev tsim kho thiab muab cov qauv tsim tshiab tshiab uas hloov zuj zus nrog kev hloov pauv thev naus laus zis. "
SN thiab MDC connector tau koom nrog CS connector li optical interfaces lees paub los ntawm pawg MSA.Tag nrho peb yog duplex connectors uas yog tus yam ntxwv ntawm daim ntawv me me heev (VSFF).
MDC connector
US Conecmuaj EliMent hom MDC connector.Lub tuam txhab piav qhia txog EliMent raws li "tsim rau kev txiav tawm ntawm multimode thiab singlemode fiber ntau cables mus txog 2.0 mm inch.MDC connector yog tsim los nrog cov pov thawj 1.25-mm ferrule technology siv nyob rau hauv kev lag luam-tus qauv LC optical connectors, ntsib IEC 61735-1 Qib B insertion poob yuav tsum. "
US Conec piav qhia ntxiv, "Muaj ntau qhov tshwm sim MSAs tau txhais cov chaw nres nkoj-tawg cov qauv tsim uas yuav tsum muaj qhov sib txuas kho qhov muag nrog tus hneev taw me dua li LC connector.Qhov loj me me ntawm MDC connector yuav tso cai rau ib leeg-array transceiver los txais ntau MDC thaj cables, uas yog ib tus neeg siv tau ncaj qha ntawm transceiver interface.
"Cov qauv tshiab yuav txhawb nqa plaub tus neeg MDC cables hauv QSFP hneev taw thiab ob tus neeg MDC cables hauv SFP hneev taw.Qhov kev sib txuas ntau ntxiv ntawm qhov module / vaj huam sib luag txo qhov loj me ntawm cov khoom siv, uas ua rau txo cov peev thiab cov nqi khiav lag luam.Ib lub tsev 1-rack-unit tuaj yeem haum 144 fibers nrog LC duplex connectors thiab adapters.Siv MDC txuas me me ua rau cov fiber ntau suav rau 432 hauv tib qhov chaw 1 RU. "
Lub tuam txhab tshaj tawm MDC connector lub tsev nyob rugged, high-precision molding, thiab kev koom tes ntev-hais cov yam ntxwv no tso cai rau lub MDC kom ntau tshaj tib Telcordia GR-326 cov kev cai raws li LC connector.MDC suav nrog lub laub-rub khau raj uas tso cai rau cov neeg teeb tsa los ntxig thiab rho tawm cov khoom sib txuas hauv qhov chaw nruj dua, tsis muaj kev txwv tsis pub cuam tshuam cov neeg nyob sib ze.
MDC kuj tseem ua kom yooj yim polarity thim rov qab, tsis muaj kev nthuav tawm lossis sib tw fibers."Yuav hloov polarity," US Conec piav qhia, "rub lub khau raj los ntawm lub vaj huam sib luag, tig lub khau raj 180 degrees, thiab rov ua cov khau raj rov qab mus rau lub tsev txuas.Polarity cov cim nyob rau sab saum toj thiab sab ntawm lub connector muab ceeb toom ntawm reversed connector polarity. "
Thaum US Conec tau tshaj tawm MDC connector thaum Lub Ob Hlis 2019, lub tuam txhab tau hais tias, "Lub xeev-ntawm-lub-kos duab connector tsim ushers nyob rau hauv ib tug tshiab era nyob rau hauv ob-fiber kev twb kev txuas los ntawm nqa unmatched ntom, yooj yim ntxig / rho tawm, teb configurability thiab zoo. nqa-qib kev ua tau zoo rau EliMent hom ib leeg-fiber connector portfolio.
"Peb-chaw nres nkoj MDC adapters haum ncaj qha rau hauv cov qauv vaj huam sib luag qhib rau duplex LC adapters, nce fiber ntau los ntawm ib qho ntawm peb," US Conec txuas ntxiv."Cov qauv tshiab yuav txhawb nqa plaub tus neeg MDC cables hauv QSFP hneev taw thiab ob tus neeg MDC cables hauv SFP hneev taw."
CS thiab SN
CS thiab SN connectors yog cov khoom ntawmSenko Advanced Components.Hauv CS connector, cov ferrules zaum ib sab, zoo ib yam li hauv layout rau LC connector tab sis me me.Hauv SN connector, cov ferrules yog stacked saum-thiab-hauv qab.
Senko qhia txog CS hauv 2017. Nyob rau hauv ib daim ntawv dawb sau nrog eOptolink, Senko piav qhia, "Txawm hais tias LC duplex connectors tuaj yeem siv rau hauv QSFP-DD transceiver modules, kev sib kis bandwidth yog txwv rau ib qho WDM cav tsim los yog siv ib qho. 1: 4 mux / demux kom ncav cuag 200-GbE kis tau tus mob, lossis 1: 8 mux / demux rau 400 GbE.Qhov no nce tus nqi transceiver thiab qhov xav tau txias ntawm lub transceiver.
"Qhov me me txuas hneev taw ntawm CS connectors tso cai rau ob ntawm lawv kom haum rau hauv QSFP-DD module, uas LC duplex connectors tsis tuaj yeem ua tiav.Qhov no tso cai rau kev tsim lub cav dual WDM siv 1: 4 mux / demux kom ncav cuag 2 × 100-GbE kis tau tus mob, lossis 2 × 200-GbE kis tau tus mob ntawm ib qho QSFP-DD transceiver.Ntxiv rau QSFP-DD transceivers, CS connector kuj sib xws nrog OSFP [octal me daim ntawv-factor pluggable] thiab COBO [Consortium rau On Board Optics] modules."
Dave Aspray, Senko Advanced Components 'European kev muag khoom tus thawj coj, tsis ntev los no tau hais txog kev siv CS thiab SN connectors kom ncav cuag qhov nrawm li 400 Gbits / sec."Peb tab tom pab txo qis hneev taw ntawm cov ntaub ntawv ceev ceev los ntawm kev txo cov fiber ntau txuas," nws hais."Cov chaw zov me nyuam tam sim no feem ntau siv kev sib xyaw ua ke ntawm LC thiab MPO connectors raws li kev daws teeb meem siab.Qhov no txuag tau ntau qhov chaw piv rau cov pa SC thiab FC connectors.
"Txawm hais tias MPO connectors tuaj yeem ua kom muaj peev xwm tsis tau nce hneev taw, lawv tau mob siab rau tsim khoom thiab nyuaj rau kev ntxuav.Peb tam sim no muab ntau yam ntawm cov khoom siv sib txuas uas siv tau ntev dua hauv thaj teb vim lawv tau tsim los siv cov cuab yeej pov thawj, yooj yim rau kev tswj thiab ntxuav, thiab muab cov txiaj ntsig zoo ntawm qhov chaw txuag.Qhov no tsis muaj qhov tsis ntseeg txoj hauv kev mus tom ntej. "
Senko piav qhia txog SN connector raws li kev daws teeb meem ultra-high-density duplex nrog 3.1-mm suab.Nws ua rau kev sib txuas ntawm 8 fibers hauv QSFP-DD transceiver.
"Hnub no MPO-raws li transceivers yog lub hauv paus ntawm cov ntaub ntawv chaw saum toj kawg nkaus, tab sis cov ntaub ntawv chaw tsim tawm yog hloov los ntawm tus qauv hierarchical mus rau nplooj-thiab-qaum qauv," Aspray txuas ntxiv."Nyob rau hauv cov qauv nplooj-thiab-tus txha nraub qaum, nws yog ib qho tsim nyog yuav tsum tau tawg tawm ntawm tus kheej txoj hauv kev txhawm rau cuam tshuam cov nqaj qaum hloov mus rau ib qho ntawm cov nplooj hloov pauv.Siv MPO connectors, qhov no yuav xav tau ib lub vaj huam sib luag cais nrog cov kab sib txuas los yog cov kab hluav taws xob tawg.Vim tias SN-raws li transceivers twb tau tawg lawm los ntawm muaj 4 tus neeg SN connectors ntawm lub transceiver interface, lawv tuaj yeem patched ncaj qha.
"Cov kev hloov pauv uas cov neeg ua haujlwm ua rau lawv cov chaw khaws ntaub ntawv tam sim no tuaj yeem tiv thaiv lawv yav tom ntej tiv thaiv qhov kev xav tau nce ntxiv, uas yog vim li cas nws yog ib lub tswv yim zoo rau cov tswv lag luam los txiav txim siab siv cov kev daws teeb meem ntau dua li CS thiab SN connectors - txawm tias nws tsis yog qhov tseem ceeb. rau lawv qhov chaw tsim ntaub ntawv tam sim no. "
Patrick McLaughlinyog peb tus thawj editor.
Post lub sij hawm: Mar-13-2020
