Tshawb xyuas yav dhau los network evolution txoj kev, 1G rau 10G network txhim kho yog qhov kev nce qib loj, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv xa khoom, network bandwidth, rau tib neeg txoj haujlwm thiab lub neej tau coj zoo txaus siab thiab yooj yim. Niaj hnub no 10G txog 40G network tig txhais tau tias yog ntau tshaj li qhov uas tau nrawm nrawm ntawm lub network, nws yog lub lev loj loj hauv cov thev naus laus zis. Hais txog kev xa tawm network, piv nrog 10G, 40G yog qhov nyuaj dua thiab siv ntau qhov tseem ceeb rau hauv kev txiav txim siab. Daim ntawv no feem ntau tshuaj xyuas los ntawm peb yam hauv qab no.
Optical module
Txhawm rau kom lub network tau ua haujlwm kom raug, qhov kev sib tshuam kho qhov muag yuav tsum pom tseeb, thiab cov kho qhov muag hluav taws xob yog qhov tseem ceeb ntawm kev paub txog kev kho qhov muag. Tam sim no, nyob rau hauv daim ntawv thov ntawm 40G network, qhov kho qhov muag module feem ntau muaj ob daim ntawv encapsulation, uas yog QSFP + thiab CFP. Nyob rau hauv cov nqe lus ntawm ib tug tib module kho qhov muag, ob ntawm no ob encapsulated ntaub ntawv ntawm kho qhov muag modules yog kim. Tab sis nyob rau hauv cov ntaub ntawv chaw, muaj ntau txhiab tus Optical modules uas tau siv. Qhov no rau tag nrho network xa tawm, tus nqi ntawm ib qho kho qhov muag hluav taws xob nyob ib feem ntau.
Tab sis hmoov zoo, nyob rau hauv kev hloov pauv kev lag luam yog monopolized los ntawm cov tuam txhab loj cov khoom lag luam, txhua tus kho qhov muag module manufacturers nrog kev nruam thev naus laus zis; tsuas yog nqa qhov chaw hauv khw. Tam sim no koj tuaj yeem yooj yim nrhiav cov neeg sab nraud ua lag luam nyob rau hauv kev ua lag luam nrog cov hom loj, uas muaj kev ua tau zoo ib yam li thawj hom, tab sis ntawm tus nqi qis dua. Ntau lub chaw ua haujlwm tam sim no siv cov kev ntsuas kho qhov muag los txo nqi thaum siv 40G tes hauj lwm. Txawm li cas los xij, thaum tus nqi qis yog qhov tseem ceeb heev, qhov zoo tshaj plaws yuav tsum tsis txhob raug saib xyuas, thiab tsis yog txhua tus thib peb tus neeg sab nrauv muaj cov khoom pov hwm zoo. Txhua qhov module ntawm HTF yuav raug sim ntawm lub hloov qub ua ntej tawm ntawm lub Hoobkas kom ntseeg tau tias qhov zoo thiab ua haujlwm ntawm tus qauv.
Xa cov khoom nruab nrab
Qhov sib txawv sib kis muaj qhov sib txawv ntawm cov qauv sib kis, txawm hais tias optical cable yog kub, tab sis tooj liab cable tseem muaj qhov chaw tsis tseem ceeb. Rau cov tooj liab cable thiab optical fiber kis tau nruab nrab, hom 40G qauv yog: 40gbase-cr4 (luv nrug tooj liab cable xa), 40gbase-sr4 (luv nrug ntau hom optical fiber kis), 40gbase-lr4 (ntev nrug ib hom optical fiber ntau kis) kis), thiab lwm yam.
Yog li cov lus nug yog: hauv 40G network xa mus, nws yog qhov zoo dua, tooj liab lossis fiber ntau? Hais txog nqi, tooj liab cable tau meej dua zoo dua. Tab sis nws cov kev txwv yog qhov tseeb: hauv kev siv 40G kis, nws tuaj yeem taug kev tsuas yog ob peb meters. Optical fiber tsis kim dua tooj, tab sis nws muaj qhov kis tau ntev ntev. Qhov siab tshaj plaws kis nrug ntawm ib hom fiber ntau tuaj yeem ncav cuag 10 kis lus mev. Txawm hais tias ntau hom optical fiber ntau txhawb kev sib kis luv luv, nws kis tau mus txog ntau li ntawm 100 meters txog 150 meters. Xaiv qhov kis qhov nruab nrab twg, lossis raws li cov xwm txheej sib txawv ntawm cov xov xwm nyob ntawm cov xwm txheej tshwj xeeb.
40G MPO yam
Vim tias MPO thev naus laus zis pab ua kom qhov ntom kab ntawm fiber ntau, feem ntau 40G multimode optical modules yog raws li MPO thev naus laus zis. Raws li IEEE802.3ba, cov khoom siv sib txuas fiber ntau thawb (MPO) feem ntau siv rau ntau hom fiber ntau sib txuas nrog cov qauv ntev. Tab sis muaj qhov teeb meem tshiab: raws li cov xov tooj ntawm cov xov paj nce zuj zus, yog li qhov tsis yooj yim ntawm cov xov hlau cov ntaub ntawv chaw.
Tsis zoo li kev sib txuas ua kom pom cov fiber ntau, MPO txuas tsis txuas ncaj qha rau ntawm lub davhlau ya nyob twg. Tam sim no, cov chaw zov me nyuam cov ntaub ntawv feem ntau xaiv koom nrog MPO cov txheej txheem ua ntej xa mus rau 40G tes hauj lwm, uas tuaj yeem txuag ntau tus neeg siv khoom thiab peev txheej thiab yog qhov kev daws teeb meem zoo dua. Cov lus qhia los ntawm HTF ntawm no yog los txiav txim siab qhov ntev ntawm lub cable thiab kho lub tswv yim ntawm cov MPO ua ntej txiav tawm ua ntej thaiv, uas tuaj yeem pab koj txuag ntau lub sijhawm thiab nqi.
