Yog hais tias koj twb puas tau sawv nyob rau hauv pem hauv ntej ntawm ib tug data center khib sim los txiav txim seb yuav ua li cas kom tau ib tug 40G QSFP + module tham rau plaub cais.10G SFP + transceivers, tej zaum koj twb tau ntsib cov kab no lawm. Tej zaum koj yuav tsis paub yuav hu lawv li cas.
MPO to LWDbreakout cables -qee zaus hu ua fanout cables lossis harness cables- yog qhov tseem ceeb ntawm kev sib txuas lus sib npaug ntawm cov headphone splitters peb txhua tus siv hauv tsev kawm ntawv theem nrab. Tsuas yog, koj paub, rau lub teeb. Thiab kev lag luam- qib. Thiab ua tau ntseeg tau.
Lub tswv yim yooj yim
Ntawm no yog qhov khoom. Ib qho MPO connector (uas chunky rectangular yam) tuav ntau fiber ntau strands hauv ib lub interface. Peb tab tom tham 8, 12, qee zaum 24 fibers jammed rau hauv ib yam dab tsi kwv yees qhov loj ntawm SC connector ntawm steroids. LC sab? Cov no yog koj tus qauv me me -form-factor duplex connectors uas ntsaws rau hauv SFP modules li niaj zaus.
Lub breakout cable txuas ob lub ntiaj teb no.
Ib kawg: ib leeg MPO connector. Lwm qhov kawg: ntau lub LC connectors fanning zoo li octopus tentacles.
Thaum lub teeb mus los ntawm lub cable, txhua tus khub fiber ntau hauv MPO connector tau xa mus rau nws tus kheej LC duplex connector. Qhov ntawd yog nws. Qhov no txhais tau li cas nws ua haujlwm.
Yog vim li cas leej twg thab nrog cov no
Kuv yuav tsis ua txuj tias qhov no nyuaj. Yog vim li cas cov chaw zov me nyuam nyiam cov kab no yog qhov ceev. Ntshiab thiab yooj yim.
Xav txog kev txuas 40G hloov chaw nres nkoj rau plaub 10G servers. Yog tsis muaj breakout cables, koj yuav xav tau qee yam ntawm sab nraud module lossis cassette los faib cov teeb liab ntawd. Ntau cov khoom, ntau cov ntsiab lus tsis ua haujlwm, ntau qhov chaw khib nyiab tau noj. Nrog rau MPO-LC breakout? Kev sib txuas ncaj qha. Ua tiav.
Kuj tseem muaj kev sib cav txog kev tsiv teb tsaws chaw -ntau cov chaw kho dua tshiab los ntawm 10G cov txheej txheem tuaj yeem rov siv tau lawv cov LC thaj vaj huam sib luag uas twb muaj lawm thiab tsuas yog hloov pauv - sab txuas rau MPO. Txuag nyiaj. Ua kom tus thawj coj zoo siab. Khaws koj ntawm rewiring tag nrho lub tawb.
Hais txog qhov polarity yam
Okay, qhov no mus ncig ua si tib neeg. Kuv yuav cia nws luv.
Fiber optic systems xav tau kev xa (Tx) los txuas rau txais (Rx) ntawm lwm qhov kawg. Ua kom paub, txoj cai? Lub teeb mus ib txoj kev. Qhov teeb meem yog tias MPO connectors tsis cia li tig polarity zoo li khawv koob.
Feem ntau 40G / 100G QSFP transceivers siv hom B breakout cables. Tab sis -thiab qhov no tseem ceeb heev-ib txwm txheeb xyuas nrog koj cov ntaub ntawv transceiver. Kuv tau pom ntau qhov kev daws teeb meem mob taub hau tshwm sim los ntawm polarity mismatches dua li zoo nkauj npaum li cas lwm yam hauv kev sib tham kho qhov muag. Nws yog txaj muag thaum kho tsuas yog tig ib lub connector.
8-Fiber vs 12-Fiber Debate
Ntawm no yog qhov uas nws tau nkig me ntsis.
40G SR4 thiab 100G SR4 optics siv 8 fibers (4 kis, 4 tau txais). Yog li ib qho 8-fiber MPO-LC breakout muab rau koj raws nraim qhov koj xav tau-plaub LC duplex khub rau plaub channel.
Tab sis MPO connectors feem ntau yog 12-txoj hauj lwm. Thaum koj ntsaws ib lub 8-fiber cable rau hauv 12-txoj hauj lwm MPO vaj tse, nruab nrab plaub txoj hauj lwm (5-8) cia li ... zaum ntawd. Tsis siv. Tuag fiber ntau txoj haujlwm.
Qee cov neeg muag khoom muag qhov tseeb 8-fiber MPO connectors rau kev xa tawm huv. Lwm tus tsis thab plaub. Ob txoj hauv kev ua haujlwm zoo, tab sis yog tias koj tshwj xeeb txog koj cov fiber ntau suav (qee lub network engineers kiag li), nws tseem ceeb.
12- fiber ntau breakouts muaj ib yam nkaus-feem ntau rau lub hauv paus-12 systems los yog thaum koj nyob nraum fanning tawm mus rau LC duplex sib txuas. Feem ntau hauv 10G kev xa tawm qhov twg koj tab tom sib sau ua ke ntau lub duplex khiav mus rau hauv ib lub cev.
Thiab ces muaj 24-fiber. Qhov ntawd yog tiag tiag nkag mus rau hauv siab - thaj chaw ntom ntom-feem ntau 100G PSM4 daim ntawv thov lossis cov xwm txheej uas koj tab tom sib piv ntau ntawm bandwidth.
Tib -Mode Versus Multimode
Ceev faj ntawm no vim kuv pheej pom cov neeg sib xyaw qhov no.
OM3/OM4 multimode breakouts (lub aqua-xim xim): ncav cuag luv, laser- optimized, 100-400 meters nyob ntawm qhov ceev. Cov no yog koj 40GBASE-SR4, 100GBASE-SR4 tus neeg ua haujlwm.
OS2 ib leeg-mode breakouts (lub tsho daj): ntev nrug, txawv transceiver hom nkaus. Koj yuav pom cov no hauv 100G-LR4 lossis tsev kawm ntawv sib cuam tshuam qhov twg multimode yuav tsis ncav cuag.
Koj tsis tuaj yeem sib tov lawv. Cia li tsis txhob. Cov tub ntxhais qhov loj me yog sib txawv kiag li -50 microns piv rau 9 microns- thiab cov wavelengths tsis ua si zoo ua ke.
Installation Reality Check
Cia kuv qhia koj yam tsis muaj leej twg tso rau hauv cov khoom lag luam.
Cov kab no yuav tsum tau ua tib zoo tuav. Lub MPO connector muaj MT ferrule tuav 8, 12, los yog 24 fiber cores nyob rau hauv kev sib raug zoo siv phau ntawv pins me dua tib neeg cov plaub hau. Jam nws sideways rau hauv qhov chaw nres nkoj thiab koj tsuas yog khawb ib pawg ntawm qhov kawg. Muaj kev lom zem nrog koj 3dB qhov poob ntawm qhov uas siv los ua 0.35dB kev sib txuas.
Cov LC tails tseem muaj kev cuam tshuam. Cov kiv cua 2 hli - tawm ob txhais ceg zoo li khov kho tab sis lawv tsis yog tiag tiag rau kev rov yanking. Siv cov kev tswj kab hluav taws xob kom raug. Sau txhua yam. Tsis txhob cia koj cov tails breakout dangle dawb nyob rau hauv lub khib tshwj tsis yog tias koj nyiam ua si "khiav fiber" ntawm 2 AM thaum lub sij hawm hluav taws xob.
Kev huv huv. Tej zaum ntau tshaj qhov koj xav. Kuv tau saib cov engineers siv sij hawm kuaj xyuas cov pob ntawv tsis zoo uas tau dhau los ua ib lub ntsej muag fiber ntau. Tau qhov kev tshuaj ntsuam xyuas. Siv nws ua ntej txhua qhov tseem ceeb mating. IBC tu cov cuab yeej muaj tshwj xeeb rau MPO connectors-lawv tsim nyog rau kev nqis peev.
Connector Poj Niam Txiv Neej (Yog, Qhov Teeb Meem no)
MPO connectors tuaj rau txiv neej (nrog pins) thiab poj niam (tsis muaj pins).
Nov yog txoj cai uas txuag kev mob taub hau: feem ntau QSFP transceivers muaj txiv neej MPO interfaces. Yog li koj qhov breakout cable xav tau ibpoj niamMPO connector los ua phooj ywg nrog lawv. Pins mus rau hauv qhov. Yooj yim.
Yog tias koj yuam kev yuam txiv neej -rau-LC breakouts rau koj QSFP cov chaw nres nkoj, koj yuav xav tau cov adapter cables lossis koj yuav xa cov khoom rov qab. Tsis lom zem.
Tiag -Kev Ua Haujlwm Hauv Ntiaj Teb
MPO zoo -LC breakout yuav tsum muab rau koj:
Insertion poob qis dua 0.5dB ib khub niam txiv
Rov qab poob zoo dua 20dB rau multimode, 55dB + rau APC ib zaug -hom
Tsawg crosstalk ntawm cov channel
Cov neeg tseem ceeb/premium-qib MTP connectors (US Conec's enhanced version of MPO) push insertion poob mus rau 0.35dB lossis txawm 0.15dB rau cov neeg tseem ceeb ntau yam. Thaum koj tab tom khiav siab - nrawm txuas txuas qhov twg txhua dB suav, qhov no tseem ceeb.
Cov kab hluav taws xob pheej yig muaj nyob. Lawv ua hauj lwm... tej zaum. Rau lub hom phiaj - tseem ceeb infrastructure? Siv cov nyiaj ntxiv rau cov rooj sib txoos zoo nrog cov txiaj ntsig ntawm tus kheej.
Thaum Yuav Siv Dab Tsi
8-fiber MPO rau 4 × LC duplex:
40G SR4 txog 4 × 10G SFP + breakout, 100G SR4 txog 4 × 25G SFP28
12-fiber MPO rau 6 × LC duplex:
Base-12 consolidation, legacy 10G parallel systems
24-fiber ntau yam:
100G PSM4, siab -qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom
Ib lo lus ntawm cov kev xaiv Armored
Qee qhov chaw- tsim cov plag tsev, thaj chaw uas muaj teeb meem nas (yog, qhov no yog qhov tseeb hauv cov chaw qub), kev khiav tawm sab nraum zoov- tau txais txiaj ntsig los ntawm cov khoom siv armored breakout cables. Hlau- cov khoom sib txuas lossis corrugated armor ntxiv kev tiv thaiv lub cev.
Kev lag luam - tawm yog khoov vojvoog. Armored cables tsis flex li tus qauv versions. Npaj koj txoj kev raws li.
Kev xav zaum kawg
MPO rau LC breakout cables tsis yog cov cuab yeej nyuaj. Lawv tsuas yog cov kav dej ntse xwb- noj ib qhov siab - qhov sib txuas thiab faib nws mus rau kev paub, tswj tau LC terminations.
Cov gotchas yog nyob rau hauv cov ntsiab lus: polarity configuration, fiber ntau suav txuam, connector poj niam txiv neej, thiab ua kom txhua yam huv si. Tau txais cov cai thiab cov kab hluav taws xob no tau ploj mus rau hauv koj lub vaj tse, ua raws nraim li lawv yuav tsum ua.
Tau txais lawv tsis raug thiab ... zoo, koj yuav paub zoo txog koj cov khoom siv fiber ntau.
