OM1, OM2, OM3 thiab OM4 Fiber Patch Cable yog dab tsi?
Cov kab hluav taws xob fiber ntau tuaj yeem faib ua ntau hom. Feem ntau, peb pom hom ib hom thiab multimode fiber ntau muaj nyob rau ntawm kev ua lag luam. Multimode fibers tau piav qhia los ntawm lawv cov tub ntxhais thiab cladding diameters. Qhov taub ntawm ntau hom fiber ntau xws li 50/125 µm lossis 62.5 / 125 µm. Tam sim no, muaj plaub yam siv OM (multimode) fiber ntau: OM1, OM2, OM3, thiab OM4. Txhua hom ntawm lawv muaj cov yam ntxwv sib txawv.
Daim duab saum toj no qhia tau hais tias kev tsim kho ntawm OM multimode fibers. Lub txiv kab ntsuab OM5 cov xov paj tshiab khiv tawm tshiab thiab paub tseeb tias yuav siv cov xov xwm sib kis tau zoo rau yav tom ntej sai sai no. Yog xav paub ntxiv txog OM5 fibers, thov tig mus rau OM5 Fiber Cable - Nws Puas Tsim nyog rau 40G / 100G SWDM4 Cabling Solution
OM Multimode Fiber Txuj
Txhua qhov "OM" muaj qhov txwv tsawg kawg ntawm Modal Bandwidth (MBW) qhov yuav tsum tau muaj. OM1, OM2, thiab OM3 yog txiav txim siab los ntawm ISO 11801 tus qauv, uas yog ua raws li modal bandwidth ntawm cov hom fiber ntau. Thaum Lub Yim Hli 2009, TIA / EIA pom zoo thiab tso tawm 492AAAD, uas txhais cov qauv ntsuas kev ua haujlwm rau OM4. Thaum lawv tsim cov qauv "OM" thawj, IEC tseem tsis tau tso tawm ib qho kev pom zoo ib qho qauv uas yuav kawg muab sau ua fiber ntau hom A1a.3 hauv IEC 60793-2-10.
Raws li cov lus hais saum toj no,
OM1 cable feem ntau los nrog lub tsho txiv kab ntxwv thiab muaj qhov loj ntawm 62.5 micrometers (µm). Nws tuaj yeem txhawb 10 Gigabit Ethernet ntawm qhov ntev ntev 33 meters. Nws yog feem ntau siv rau 100 Megabit Ethernet kev siv
OM2 tseem muaj lub tsho pom zoo xim ntawm cov txiv kab ntxwv. Nws qhov loj me yog 50µm siv 62.5µm. Nws txhawb 10 Gigabit Ethernet ntawm ntev mus txog 82 meters tab sis feem ntau siv rau 1 Gigabit Ethernet daim ntawv thov.
OM3 muaj kev xav lub tsho xim ntawm aqua. Zoo li OM2, nws cov tub ntxhais loj me yog 50µm. Nws txhawb 10 Gigabit Ethernet ntawm ntev mus txog 300 meters. Dhau li OM3 muaj peev xwm txhawb 40 Gigabit thiab 100 Gigabit Ethernet txog li 100 meters. 10 Gigabit Ethernet yog qhov feem ntau siv.
OM4 tseem muaj lub tsho pom zoo xim ntawm aqua. Nws yog kev txhim kho ntxiv rau OM3. Nws kuj tseem siv qhov 50µm tub ntxhais tab sis nws txhawb 10 Gigabit Ethernet ntawm qhov ntev li 550 meters thiab nws txhawb 100 Gigabit Ethernet ntawm qhov ntev ntev txog 150 meters.
OM1 Vs. OM2 Vs. OM3 Vs. OM4 Fiber
Muaj ntau qhov sib txawv ntawm plaub yam ntawm cov hom fiber ntau, thiab peb tuaj yeem pom lawv pom tseeb los ntawm cov lus hauv qab no:
Txoj kab uas hla: Cov tub ntxhais txoj kab uas hla ntawm OM1 yog 62.5 µm, txawm li cas los xij, cov tub ntxhais txoj kab uas hla ntawm OM2, OM3 thiab OM4 yog 50 µm.
Tsho Xim: OM1 thiab OM2 MMF feem ntau yog txhais los ntawm lub tsho poj niam. OM3 thiab OM4 feem ntau yog txhais nrog lub tsho aqua.
Cov Khoom Taw Qhia: OM1 thiab OM2 feem ntau siv cov teeb ci LED. Txawm li cas los xij, OM3 thiab OM4 feem ntau siv 850 nm VCSELs.
Bandwidth: Ntawm 850 nm qhov tsawg kawg nkaus modal bandwidth ntawm OM1 yog 200MHz * km, ntawm OM2 yog 500MHz * km, ntawm OM3 yog 2000MHz * km, ntawm OM4 yog 4700MHz * km.
Vim li cas OM3 & OM4 Fiber Superior rau OM1 & OM2?
Ob OM1 thiab OM2 ua haujlwm nrog cov khoom siv LED uas muaj peev xwm xa ntau pua hom kev ua haujlwm ntawm lub teeb qis rau lub cable, thaum OM3 thiab OM4 fiber ntau kho kom zoo rau laser (piv txwv li VCSEL) raws cov khoom siv uas siv tsawg dua cov teeb pom kev zoo. LEDs tsis tau qhib / tawm nrawm txaus kom txhawb nqa kev siv bandwidth ntau dua, thaum VCSELs muaj peev xwm hloov kho dua 10 Gbit / s thiab siv nyob rau hauv ntau lub vas sab high-speed. Vim li no, OM3 thiab OM4 yog cov multimode fibers nyob rau hauv 40G thiab 100G Ethernet txuj. Tam sim no OM1 thiab OM2 feem ntau yog siv rau 1G uas tsis haum rau cov kev sib txuas lus siab dua hnub no. OM3 thiab OM4 tau siv rau 10G feem ntau nyob rau tam sim no. Tab sis yav tom ntej, txij li OM3 thiab OM4 tuaj yeem txhawb nqa 40G thiab 100G, uas tej zaum yuav ua rau lawv muaj kev cuam tshuam.
