Dab tsi yog qhov sib txawv ntawm OM1, OM2, OM3 thiab OM4 fibers?

GG quot; OM" sawv rau optical ntau hom, uas yog, hom kho qhov muag, yog tus qauv ntawm multimode fiber los qhia qib fiber ntau. Qhov bandwidth thiab qhov siab tshaj plaws ntawm kev sib kis sib txawv yog txawv. Daim ntawv no feem ntau yuav piav qhia txog qhov sib txawv ntawm OM1, OM2, OM3 thiab OM4 fibers.

Cov lus tsis dhau thiab tshwj xeeb

1. OM1 hais txog 850 / 1300nm tag nrho kev txhaj tshuaj bandwidth ntawm 200/500 MHz.km Ntau tshaj 50um lossis 62.5um tseem ceeb taub multimode fiber ntau;

2. OM2 hais txog 850 / 1300nm tag nrho txoj kev txhaj tshuaj loj ntawm 500/500 MHz.km Ntau tshaj 50um lossis 62.5um tub ntxhais taub multimode fiber ntau;

3. OM3 yog 50um core diameter multimode fiber ntau zoo los ntawm 850nm laser. Hauv 10Gb / s Ethernet nrog 850nm VCSEL, kev xaib fiber ntau tuaj yeem ncav cuag 300m;

4. OM4 yog kev hloov kho tshiab ntawm OM3 multimode kho qhov muag fiber ntau, thiab cov kab hluav taws xob xa xov kis nrug tuaj yeem ncav cuag 550m.

Tsim qauv

1. Cov tsoos OM1 thiab OM2 multimode kho qhov muag hluav taws xob ua raws li LED (lub teeb ci tawm ntawm lub teeb) nyob rau hauv tus qauv thiab tsim qauv, thaum OM3 thiab OM4 tau kho kom zoo rau lub hauv paus ntawm OM2 los ua kom lawv haum rau kis ntawm LD (laser diode) ntawm tib lub sij hawm;

2. Piv nrog OM1 thiab OM2, OM3 muaj qhov sib kis thiab bandwidth ntau dua, yog li nws yog hu ua optimized multimode fiber lossis 10 Gigabit multimode fiber;

3. OM4 txuas ntxiv kho qhov zoo ntawm OM3 thiab muaj kev ua haujlwm zoo dua.

Tso cai thiab nta

1. OM1: loj dua cov tub ntxhais txoj kab uas hla thiab cov lej aperture, lub teeb sau muaj zog ntau dua thiab khoov tsis kam;

2. OM2: cov tub ntxhais txoj kab uas hla thiab cov lej aperture tseem me me, uas muaj txiaj ntsig txo cov hom kev tawg ntawm multimode fiber ntau, qhov nce ntawm bandwidth thiab txo cov nqi tsim los ntawm 1/3;

3. OM3: nplaim hluavtaws tawv nqaij yog siv los tiv thaiv cov nplaim taws sib kis, pa taws, kua roj kua roj thiab cov pa roj lom, thiab ua tau raws li qhov xav tau ntawm 10Gb / s kis tus nqi;

4. OM4: tsim rau vscel laser kis tau tus mob. Qhov ua tau zoo ntawm OM4 yog ntau dua li ob npaug ntawm OM3.

Cov tau txais daim ntawv thov

1. OM1 thiab OM2 tau dav siv hauv tsev daim ntawv thov rau ntau xyoo, txhawb nqa txog 1GB Ethernet kis;

2. OM3 thiab OM4 optical cables feem ntau siv hauv kab puag ncig ntawm cov ntaub ntawv chaw, txhawb 10G lossis txawm tias 40 / 100G high-speed Ethernet xa.

Thaum siv OM3 fiber ntau thaj qaum?

OM3 fiber ntau kho qhov muag tau tsim los ua haujlwm nrog VCSEL. Nws ua tau raws li OM3 kho qhov muag fiber ntau ntawm ISO / iec11801-2nd thiab ua tau raws li cov cai ntawm 10 Gigabit Ethernet kev siv. Muaj ntau hom OM3 fiber ntau, suav nrog hom sab hauv tsev, sab hauv tsev / sab nraum zoov sab nraud, thiab lwm yam. Cov naj npawb ntawm cov fiber ntau muaj li ntawm 4 txog 48. Nws kuj txhawb txhua daim ntawv thov raws cov qub multimode 50/125 fiber ntau, suav nrog cov teeb ci LED thiab laser lub teeb tau qhov twg los.

1. Siv OM3 fiber ntau txheej txheem los xa Gigabit Ethernet tuaj yeem txuas ntxiv qhov sib kis mus txog 900 metres, txhais tau tias thaum qhov kev ncua deb ntawm cov tuam tsev siab tshaj 550 meters, cov neeg siv tsis tas yuav siv cov khoom siv laser kim.

2. Tus qauv 62.5 / 125 μ m multimode fiber ntau tuaj yeem siv tau rau txhua qhov teeb meem nyob rau hauv oc-12 (622Mb / s) tus nqi ntau tshaj 2000 meters, thiab ib hom fiber ntau yuav siv ntxiv. Txawm li cas los xij, kev tshwm sim ntawm OM3 multimode fiber tau hloov qhov xwm txheej no. Vim tias OM3 fiber ntau tuaj yeem txhim kho qhov kis mus deb ntawm Gigabit thiab 10 Gigabit systems, siv 850nm wavelength optical module nrog VCSEL yuav ua rau cov txheej txheem kev coj tus nqi tshaj plaws.

3. Thaum qhov txuas ntev tshaj li 1000 metres, ib hom fiber ntau tseem yog qhov kev xaiv tsuas yog tam sim no. Ib hom fiber ntau tuaj yeem ua tiav kis mus txog 5 km ntawm 1310 nm hauv Gigabit system thiab 10 km hauv 10 Gigabit system.

4. Thaum qhov kev sib txuas ntev yog tsawg dua lossis sib npaug li 1000m, OM350 mult m multimode fiber ntau tuaj yeem siv rau hauv Gigabit system, thaum ib hom fiber ntau yuav tsum siv rau hauv 10 Gigabit system.

5. Thaum qhov kev sib txuas ntev yog tsawg dua 300 meters, OM3 multimode fiber ntau tuaj yeem siv rau hauv txhua qhov Gigabit thiab 10 Gigabit system.

Thaum twg yuav tsum siv OM4 fiber ntau jumper?

Rau qhov txuas sib txuas, tus nqi ntawm cov kho qhov muag hluav taws xob yog kim heev. Txawm hais tias tus nqi ntawm ib hom fiber ntau yog pheej yig dua li ntawm multimode fiber, kev siv tib hom fiber ntau qhov yuav tsum tau kim heev 1300nm optical module, uas yog li 2-3 zaug ntawm 850nm multimode optical module. Nyob rau hauv dav dav, tus nqi ntawm multimode fiber system muaj ntau tsawg dua li ntawm ib-hom fiber ntau qhov system.

Thaum nqis peev hauv optical fiber cabling, yog tias peb tuaj yeem xav nce kev pib nqis peev hauv cabling thiab txais yuav zoo dua fiber ntau, xws li OM4 fiber, peb tuaj yeem ua kom muaj kev siv tam sim no multimode fiber technology thiab txo tus nqi tag nrho ntawm qhov system tam sim no; thaum lub zog xav tau kev txhim kho kom zoo dua qub rau kev ua haujlwm siab, xws li 40G thiab 100G, OM4 tseem tuaj yeem siv thiab yuav txuag nqi ntau dua.

Hauv ib lo lus, thaum kis tau tus nqi siab dua 1GB / s, siv multimode fiber yog qhov kev xaiv zoo. Thaum lub kaw lus xav tau kev xa xov ntau dua, cov hauv qab no yog peb cov lus qhia rau xaiv OM4 fiber:

1. Rau cov neeg siv Ethernet, qhov kev sib kis tau mus txog 300m txog 600m hauv 10Gb / s system, thiab 100m txog 125m hauv 40Gb / s thiab 100GB / s system.

2. Rau cov neeg siv thaj tsam sab nraud, OM4 fiber ntau yuav pab txhawb 4GB / s fiber ntau qhov ntev ntawm 400m, 8GB / s fiber ntau txuas ntev ntawm 200m lossis 16GB / s fiber ntau txuas ntev ntawm 130m.

HTF' s cov khoom lag luam zoo tau lees tias, thiab cov khoom siv siv tau yog txawv txawv.

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