Xaiv txoj cai multimode fiber ntau cuam tshuam ntau dua li tus nqi cable. OM1, OM2, OM3, OM4 thiab OM5 sib txawv nyob rau hauv cov tub ntxhais txoj kab uas hla, zoo modal bandwidth, lub teeb qhov chaw compatibility, siab tshaj plaws kev pab cuam nyob deb thiab ntev - lub sij hawm upgrade muaj peev xwm. Ib qho kev xaiv tsis raug tuaj yeem txwv qhov txuas mus txog, yuam kom rov ua dua ntxov ntxov lossis tawm ntawm kev ua haujlwm ntawm lub rooj.
Rau feem ntau cov lag luam tshiab thiab cov chaw teeb tsa cov ntaub ntawv, qhov kev txiav txim siab los ntawm OM3, OM4 lossis OM5. OM1 thiab OM2 tseem tshwm sim hauv cov laus dua, tab sis ob qho tib si raug cais raws li kev siv tsis tau hauvISO / IEC 11801 Kev Tswj Xyuas Kev Lag Luamand TIA-568, and theTIA Fiber Optics Technology Consortium (FOTC)pom zoo kev txhim kho tshiab siv OM3, OM4 lossis OM5.
Phau ntawv qhia no sib piv tag nrho tsib hom fiber ntau ntau ib sab thiab piav qhia qhov twg ua rau muaj kev nkag siab zoo rau qhov sib txawv network ceev, txuas qhov deb thiab txhim kho cov phiaj xwm.
Multimode Fiber yog dab tsi?
Multimode fiber (MMF) yog ib qho fiber ntau optical tsim los nqa ntau txoj kev teeb pom kev zoo - hu ua hom - los ntawm cov tub ntxhais loj loj. Nws yog tus qauv kev xaiv rau luv luv - kev sib txuas nyob deb hauv cov chaw cov ntaub ntawv, cov tsev lag luam, cov cuab yeej siv thiab cov pob txha hauv tsev kawm ntawv uas khiav tsis tshua muaj ntau tshaj li ob peb puas meters.
Piv nrogtib - hom fiber ntau, multimode fiber txhawb nqa luv tshaj qhov deb. Txawm li cas los xij, kev sib txuas ntau hom feem ntau raug nqi tsawg dua ntawm cov txheej txheem vim tias cov iav dav dav ua rau cov khoom sib txuas ua kom zoo thiab vim tias VCSEL (verttical-kab noj hniav nto- emitting laser) qhov chaw siv hluav taws xob tsawg dua thiab raug nqi tsawg dua cov lasers siv hauv ib qho - hom optics. TIA FOTC sau tseg tias rau ntau qhov luv - ncav cuag Ethernet ceev, ntau hom channel - fiber ntau ntxiv rau optics - tuaj yeem raug nqi ntau dua- zoo dua li qhov sib npaug ntawm ib qho - hom channel.
Lub tsib hom multimode fiber ntau yog OM1, OM2, OM3, OM4 thiab OM5. Lub "OM" ua ntej sawv cev rauoptical multimode.
Kev sib piv ceev: OM1 vs OM2 vs OM3 vs OM4 vs OM5
| Hom Fiber | Core Size | Jacket Xim | Lub Teeb Tseem Ceeb | Ntsiab Bandwidth | Zoo tshaj plaws |
|---|---|---|---|---|---|
| OM 1 | 62.5/125 µm | Txiv kab ntxwv | LED | 200 MHz ·km OFL ntawm 850 nm | Legacy 100M / 1G networks |
| OM 2 | 50/125 µm | Txiv kab ntxwv | LED | 500 MHz ·km OFL ntawm 850 nm | Legacy 1G links |
| OM 3 | 50/125 µm | Aqua | VCSEL (850 nm) | 2000 MHz · km EMB ntawm 850 nm | 10G thiab luv - ncav cuag 40G / 100G |
| OM 4 | 50/125 µm | Aqua (qee tus neeg muag khoom siv violet) | VCSEL (850 nm) | 4700 MHz · km EMB ntawm 850 nm | Niaj hnub no 10G / 25G / 40G / 100G cov ntaub ntawv chaw |
| OM 5 | 50/125 µm | Txiv qaub ntsuab | VCSEL / SWDM (850-953 nm) | 4700 MHz · km ntawm 850 nm; 2470 MHz · km ntawm 953 nm | SWDM thiab ntau -wavelength daim ntawv thov |
Cisco's OM4 vs OM5 technical papertxheeb xyuas OM3, OM4 thiab OM5 raws li 50 µm multimode fiber ntau chav kawm thiab qhia tias OM5 nqa cov kev xav tau zoo ntawm kev siv bandwidth ntawm 850 nm thiab 953 nm.
OM1 Fiber: Legacy 62.5 µm Multimode
OM1 siv 62.5 µm core - loj dua txhua lwm hom OM - thiab raug txheeb xyuas los ntawm lub tsho txiv kab ntxwv. Nws yog qhov tseem ceeb ntawm LAN fiber ntau thaum xyoo 1990 thiab thaum ntxov 2000s, thaum 100 Mbps thiab 1 Gbps Ethernet yog qhov ceev tshaj plaws uas cov tsev xav tau.
Niaj hnub no, OM1 tsis pom zoo rau kev txuas tshiab. Nws qhov qis qis qis qis qis thiab 62.5 µm core txwv hnyav ncav cuag 10G thiab siab dua. Yog tias OM1 tau teeb tsa lawm, nws tseem tuaj yeem nqa keeb kwm 100M lossis 1G tsheb khiav, tab sis txhua qhov kev hloov kho nrawm yuav tsum pib nrog kev tshawb xyuas txuas: ntsuas qhov tseeb cable ntev, kos lubkev poob qispob nyiaj siv thiab paub meej tias cov transceiver specification ua ntej xav tias cov nroj tsuag uas twb muaj lawm tuaj yeem rov siv dua.
OM2 Fiber: Laus 50/125 µm Multimode
OM2 tau hloov mus rau 50 µm core, uas txhim kho bandwidth tshaj OM1, tab sis nws tseem suav tias yog cov khoom qub qub qub. Ib yam li OM1, nws feem ntau muaj lub tsho txiv kab ntxwv thiab tau tsim feem ntau rau LED-raws li transmitters.
Ntau qhov txuas 1G uas twb muaj lawm khiav ntawm OM2 yam tsis muaj teeb meem. Txawm li cas los xij, OM2 tsis muaj lub laser- ua kom zoo tshaj qhov profile uas OM3, OM4 thiab OM5 muab, yog li nws hloov kho lub taub hau ntawm 10G thiab siab dua yog txwv. Rau cov cabling tshiab, OM2 feem ntau tsis yog qhov kev xaiv zoo tshwj tsis yog qhov tshwj xeeb xav tau kev sib raug zoo nrog LED uas twb muaj lawm - cov cuab yeej siv ua rau nws tsim nyog.
OM3 Fiber: Laser-Optimized Multimode rau 10G
OM3 sawv cev rau ib kauj ruam tseem ceeb rau pem hauv ntej: nws yog thawj multimode fiber ntau hom tsim thiab optimized rau 850 nm VCSEL laser qhov chaw. Nws siv 50 µm core thiab feem ntau pom los ntawm lub tsho aqua.
Rau kev lag luam 10G txuas, OM3 tseem yog qhov siv tau thiab tus nqi - kev xaiv zoo. TIA FOTC teev cov kev khiav hauj lwm ntau ntawm 10GBASE-SR dhau OM3 li 2 m txog 300 m, thaum OM4 thiab OM5 txuas ntxiv qhov kev npaj ua haujlwm mus txog 400 m. OM3 kuj tseem tuaj yeem txhawb nqa luv- ncav cuag 40G thiab 100G multimode daim ntawv thov xws li 40GBASE-SR4 thiab 100GBASE-SR4, tab sis qhov kev txhawb nqa poob qis dua piv nrog 10G - feem ntau mus txog 100 m.
Hauv kev xyaum, OM3 ua haujlwm zoo rau 10G khiav qis dua 300 m hauv chaw ua haujlwm LANs, tsev kawm ntawv cov tsev kawm ntawv thiab cov chav tsev me me uas qhov kev npaj txuas txuas tau yooj yim haum hauv nws cov kev txwv. Yog tias koj qhov ntev tshaj plaws yog 150 m thiab koj siv 10G nrogLC Duplex connectors, OM3 tuaj yeem txuag cov nqi tseem ceeb tshaj OM4 yam tsis muaj kev ntseeg siab.
OM4 Fiber: Qhov Kev Xaiv Tseem Ceeb rau Cov Chaw Cov Ntaub Ntawv Niaj Hnub No
OM4 yog ib qho kev txhim kho laser- optimized 50/125 µm multimode fiber ntau nrog kev ua haujlwm zoo ntawm 4700 MHz·km ntawm 850 nm - ntau dua ob npaug ntawm OM3. Lub tsho feem ntau yog aqua, txawm hais tias qee lub tuam txhab siv violet kom paub qhov txawv ntawm OM4 los ntawm OM3 pom.
Rau ntau lub lag luam tshiab thiab cov ntaub ntawv chaw ua haujlwm, OM4 yog qhov ua tau zoo. Nws muab ntau dua OM3 rau txhua qhov loj 850 nm Ethernet daim ntawv thov, thiab nws zam tus nqi ntxiv ntawm OM5 tshwj tsis yog lub network tshwj xeeb xav tau SWDM lossis ntau - wavelength optics. Piv txwv li,Cisco's 10GBASE-SR SFP+ module data sheetteev qhov siab tshaj plaws ntawm 300 m tshaj 2000 MHz ·km OM3 thiab 400 m tshaj 4700 MHz ·km OM4.
Xav txog qhov chaw khaws ntaub ntawv siv 100GBASE-SR4 dhauMPO / MTP lub cev cables. Nrog OM4, qhov kev npaj ntau yam txuas mus rau 150 m - txaus rau feem ntau cov cabling topologies nyob rau hauv ib lub tsev. OM3 yuav cap tib daim ntawv thov ntawm 100 m, uas tej zaum yuav nruj ib zaug thaj vaj huam sib luag, ntoo khaub lig- txuas thiab xaus- ntawm - kab kev hloov pauv yog suav nrog.
OM5 Fiber: Wideband Multimode rau SWDM daim ntaub ntawv
OM5 - kuj hu ua wideband multimode fiber (WBMMF) - qhia tib yam 50 µm core li OM3 thiab OM4, tab sis ntxiv bandwidth characterization ntawm lub wavelength thib ob: 953 nm.Fluke Networks piav qhiatias OM5 yog ib qho tseem ceeb ntawm OM4-chav kawm fiber ntau nrog cov kev ua haujlwm zoo ntxiv ntawm cov khoom siv bandwidth thoob plaws 846 nm txog 953 nm ntau yam, ua rau VCSEL-based shortwave wavelength division multiplexing (SWDM) transceivers.
Qhov no yog qhov uas OM5 feem ntau to taub yuam kev. OM5 tsis tau zoo dua li OM4 rau txhua qhov txuas multimode. Cisco tau hais meej meej tias OM5 muab cov txiaj ntsig zoo txhim kho feem ntau rau ntau - wavelength transceivers uas ua haujlwm hla 850 nm txog 940 nm waveband. Rau ntau hom multimode transceivers uas ua haujlwm tsuas yog ntawm 850 nm - suav nrog 10GBASE-SR, 25GBASE-SR, 40GBASE-SR4 thiab 100GBASE{{20}SR{21}} OM4 muab tus nqi qis dua.
OM5 ua rau muaj kev nkag siab txog nyiaj txiag thaum koj qhov kho qhov muag module txoj kev qhia tshwj xeeb suav nrog SWDM4 lossis lwm yam khoom siv ntau yam - wavelength technologies. 400GBASE-SR4.2 tus qauv, piv txwv li, siv ob lub wavelengths thiab cov txiaj ntsig los ntawm OM5's wideband characterization: OM5 txhawb nqa txog 150 m rau daim ntawv thov ntawd, thaum OM4 ncav cuag 100 m. Yog tias koj lub network tsis npaj siv ntau- wavelength optics, OM5 yuav tsis pom zoo rau tus nqi tshajOM4 fiber ntau cables.
Multimode Fiber nrug los ntawm Ethernet Ceev
Cov lus hauv qab no qhia txog IEEE 802.3 multimode daim ntawv thov ntau yam raws li cov ntaub ntawv luam tawm los ntawm TIA FOTC. Kev ncav cuag hauv ib qho kev teeb tsa yog nyob ntawm tus qauv transceiver, suav nrog kev sib txuas, kev sib txuas, cable zoo thiab tag nrho cov peev nyiaj poob. Nco ntsoov xyuas cov ntaub ntawv kho qhov muag module thiab suav covpoob nyiaj txiagua ntej kawg tsim.
| Daim ntawv thov Ethernet | Fiber suav | OM3 Range | OM4 Range | OM 5 Range |
|---|---|---|---|---|
| 10GBASE-SR | 2 fibers (duplex LC) | 2–300 m | 2–400 m | 2–400 m |
| 25GBASE-SR | 2 fibers (duplex LC) | 0.5–70 m | 0.5–100 m | 0.5–100 m |
| 40GBASE-SR4 | 8 fibers (MPO-12) | 0.5–100 m | 0.5–150 m | 0.5–150 m |
| 100GBASE-SR4 | 8 fibers (MPO-12) | 0.5–100 m | 0.5–150 m | 0.5–150 m |
| 200GBASE-SR4 | 8 fibers (MPO-12) | 0.5–70 m | 0.5–100 m | 0.5–100 m |
| 400GBASE-SR4.2 | 8 fibers (MPO-12) | 0.5–70 m | 0.5–100 m | 0.5–150 m |
Tus qauv yog ncaj nraim: OM4 feem ntau muab ntau tshaj OM3 rau tag nrho 850 nm daim ntawv thov, thaum OM5 ntxiv kev ncua deb tsuas yog thaum lub transceiver siv ntau wavelengths (raws li nyob rau hauv 400GBASE-SR4.2). Yog xav paub ntxiv txog kev npaj nyob deb ntawm txhua tsib qib OM, saib pebmultimode fiber ntau nrug txwv kev qhia.
Connector thiab Transceiver Compatibility
Multimode fiber ntau xaiv tsis xaus nrog lub cable. Covconnector hom, optical module txheem thiab fiber ntau suav tag nrho cov cuam tshuam nrog qib fiber ntau los txiav txim seb qhov txuas yuav ua haujlwm li cas.
Duplex daim ntawv thov xws li 10GBASE-SR thiab 25GBASE-SR siv ob fibers thiab feem ntau xaus nrogLC Duplex connectors. Cov ntawv thov sib txuas xws li 40GBASE-SR4 thiab 100GBASE-SR4 siv yim fibers thiab tso siab rauMPO / MTP connectors. Qee qhov siab dua -kev siv ceev xws li 400GBASE-SR4.2 kuj tseem tuaj yeem siv MPO-12 txuas nrog yim fibers nquag.
Thaum qhia txog fiber ntau, nco ntsoov lees paub: tus qauv Ethernet qhov txuas yuav nqa, hom transceiver (SFP +, SFP28, QSFP +, QSFP28, QSFP-DD), qhov xav tau txuas txuas, suav fiber ntau, thiab tag nrho cov nyiaj tsis tau them nyiaj nrog rau txhua tus khub sib txuas sib txuas thiab splice hauv txoj kev. Ib qhov txuas 100G SR4, 100G SR1 txuas thiab 100G SWDM4 txuas yuav zoo ib yam ntawm daim ntawv tab sis xav tau cov fiber ntau suav, sib txuas sib txawv thiab qib qis fiber ntau sib txawv.
Yuav Ua Li Cas Xaiv Txoj Cai Multimode Fiber Hom
Kev xaiv cov qib fiber ntau zoo suav nrog kev sib piv tsib qhov sib txawv: lub hom phiaj cov ntaub ntawv tus nqi, qhov siab tshaj plaws txuas qhov deb, tus qauv transceiver, suav fiber ntau thiab txoj kev xav txog kev txhim kho. Ntawm no yog ib lub tswv yim kev txiav txim siab.
Khaws OM1 lossis OM2 nkaus xwb rau Kev Saib Xyuas Txoj Cai
Yog tias koj lub tsev twb muaj OM1 lossis OM2 ntsia, koj tuaj yeem siv txuas ntxiv rau 100M lossis 1G txuas. Tab sis rau ib qho tshiab cabling - txawm luv patch khiav - cov fiber ntau hom no yuav luag tsis muaj siab tshaj -speed upgrade peev xwm. Ua ntej rov siv cov khoom qub qub ntawm kev nrawm dua, txheeb xyuas seb cov nroj tsuag uas twb muaj lawm yog OM1 (62.5 µm) lossis OM2 (50 µm), tom qab ntawd txheeb xyuas qhov txuas ntev thiab kuaj cov channel poob tawm tsam cov nyiaj tau los ntawm transceiver.
Xaiv OM3 rau Nyiaj Txiag- Tus phooj ywg 10G Txuas Hauv qab 300 m
OM3 yog ib qho kev xaiv suab thaum koj qhov ntev tshaj plaws 10G khiav nyob qis dua 300 m thiab koj nyob ze - lub sij hawm txoj kev qhia tsis hu rau 25G, 40G lossis 100G tshaj tib lub cabling. Nws yog feem ntau siv hauv kev lag luam LANs, kev faib tawm hauv tsev kawm ntawv thiab cov khoom siv me me uas qhov txuas txuas ntev yog nruab nrab thiab 10G yog lub hom phiaj ceev.
Xaiv OM4 rau Feem Ntau Cov Kev Siv Multimode Tshiab
Rau cov lag luam tshiab thiab cov ntaub ntawv chaw ua haujlwm qhov twg multimode fiber ntau tsim nyog, OM4 yog qhov ua tau zoo rau ntau pawg. Nws txuas 10GBASE-SR mus txog 400 m, txhawb nqa 100GBASE-SR4 txog 150 m, thiab muab lub taub hau rau 25G thiab 200G luv- ncav cuag daim ntawv thov - tag nrho yam tsis tau them nqi OM5. Yog koj tab tom tsevstructured cabling trunksrau lub chaw khaws ntaub ntawv lossis npaj lub hauv paus tsev kawm ntawv uas yuav nqa 10G hnub no thiab 100G hauv ob peb xyoos, OM4 tshuav nqi thiab yav tom ntej - pov thawj zoo.
Xaiv OM5 Thaum SWDM lossis Multi-Wavelength Optics nyob ntawm koj daim ntawv qhia
OM5 tsim nyog tus nqi thaum koj qhov kev npaj kho qhov muag kho qhov muag tshwj xeeb suav nrog SWDM4, 400GBASE-SR4.2 lossis lwm yam ntau- wavelength technologies uas ua haujlwm hla 850-953 nm ntau yam. Yog tias koj lub network siv - thiab tseem yuav siv - tus qauv 850 nm SR optics,OM5 kabtej zaum yuav tsis xa qhov ntsuas tau zoo dua OM4 rau tib qhov txuas.
Xaiv ib zaug -Mode Fiber Thaum nrug deb lossis Ntev-Lub Sij Hawm Scalability Tseem Ceeb Ntau
Yog hais tias qhov txuas qhov deb tshaj qhov txwv multimode - kwv yees li 400 m ntawm 10G thiab luv luv ntawm 100G - lossis yog tias koj tab tom tsim ib lub sijhawm ntev - lub sij hawm hauv tsev kawm ntawv qaum teb, lub nplhaib metro lossis siab -kev sib tshuam ceev,tib-mode fiber (OS1 lossis OS2)feem ntau yog qhov zoo dua infrastructure peev. Tib hom - hom optics raug nqi ntau dua rau ib qhov chaw nres nkoj, tab sis cov fiber ntau nws tus kheej txhawb nqa tsis muaj kev txwv bandwidth hla qhov deb uas multimode tsis tuaj yeem ncav cuag. Yog xav paub ntxiv txog kev sib piv optics, saib peb phau ntawv qhiaib -mode SFP vs multimode SFP.
Daim Ntawv Thov Scenario: Txhim kho 1G Enterprise LAN rau 10G
Piv txwv tias koj lub tsev ua haujlwm tam sim no khiav 1000BASE-SX dhau OM2 cabling thiab koj yuav tsum tau hloov mus rau 10GBASE-SR. Koj qhov ntev tshaj plaws kab rov tav khiav yog 180 m.
Ua ntej, xyuas cov fiber ntau uas twb muaj lawm: OM2 tsis yog laser- optimized rau 10G VCSELs, thiab 10GBASE-SR dhau OM2 tsuas yog txwv rau 82 m raws li IEEE 802.3. Txij li thaum koj qhov kev khiav ntev tshaj plaws yog 180 m, cov nroj tsuag OM2 uas twb muaj lawm tsis tuaj yeem txhawb nqa kev txhim kho. Koj yuav tau rub cov fibers tshiab.
OM3 txhawb nqa 10GBASE-SR txog 300 m, uas npog 180 m khiav nrog cov npoo zoo. OM4 txuas ntxiv mus txog 400 m thiab yuav muab ntau lub taub hau yog tias koj cia siab tias yav tom ntej 25G lossis 40G xav tau ntawm tib lub cabling. Hauv qhov xwm txheej no, OM3 txuag nyiaj yog tias 10G yog qhov kawg; OM4 yog qhov kev xaiv nyab xeeb dua yog tias lub network yuav ntsuas ntxiv. Tshawb xyuas kojfiber ntau optic cable installationnpaj kom paub meej routing paths, connector suav thiab splice cov ntsiab lus ua ntej xaj.
Feem ntau yuam kev thaum xaiv Multimode Fiber
Piv txwv tias OM5 Ib txwm zoo dua OM4
OM5 yog tshiab dua, tab sis nws qhov zoo dua yog tshwj xeeb rau ntau - wavelength optics. Rau ib zaug -wavelength 850 nm daim ntawv thov - uas tseem sawv cev rau feem ntau ntawm kev xa tawm multimode transceivers - OM4 muab tib qhov ncav cuag tus nqi qis dua.
Xaiv Fiber nkaus xwb los ntawm Jacket Xim
Aqua tsho tshwm sim ntawm ob qho tib si OM3 thiab OM4 cables los ntawm ntau lub tuam txhab. Txiv qaub ntsuab qhia OM5. Txiv kab ntxwv npog ob qho tib si OM1 thiab OM2. Xim yog qhov muaj txiaj ntsig zoo rau kev pom, tab sis nws tsis yog qhov hloov pauv rau kev kuaj xyuas cov ntawv luam tawm, cov chaw tsim khoom cov ntawv xeem thiab qhov tseeb OM qib specification.
Tsis quav ntsej Fiber suav thiab Connector Hom
100GBASE-SR4 txuas siv yim fibers thiab MPO-12 connector. 100GBASE-SR1 txuas siv ob fibers thiab LC duplex connector. Ib qho 100G SWDM4 txuas kuj siv ob lub fibers tab sis xav tau OM5. Xaiv cov qib fiber ntau yam tsis tau lees paub fiber ntau suav thiabconnector configurationtuaj yeem ua rau kim rework.
Tsis nco qab txog Connector Poob
Txhua tus khub sib txuas sib txuas, cassette adapter thiab splice hauv cov channel ntxiv qhov poob. Ib qho txuas nrog ntau lub vaj huam sib luag tuaj yeem ua tsis tau nws cov peev nyiaj poob txawm tias qib fiber ntau nominally raug. Ib txwm suav tag nrho cov channel poob - suav nrog txhua qhov txuas txuas - thiab muab piv rau tus transceiver cov peev nyiaj tau teev tseg. Yog xav paub ntxiv txog lub ncauj lus no, saibkev poob qis hauv fiber ntau.
Mixing OM Qib sib txawv hauv ib Channel
Txuas OM3 thiab OM4 ntu hauv ib qhov txuas yog lub cev ua tau - ob qho tib si muaj 50 µm cores - tab sis tag nrho cov channel yuav tsum tau ntsuas qhov qis tshaj - qib fiber ntau hauv txoj kev. Kev sib xyaw OM3 / OM4 channel ua tau zoo dhau los ua OM3 channel rau kev npaj nyob deb. Kev sib xyaw 62.5 µm fiber ntau (OM1) nrog 50 µm fiber ntau (OM2 / OM3 / OM4 / OM5) ua rau muaj qhov tsis sib haum xeeb uas qhia txog kev poob tseem ceeb thiab tsis pom zoo.
Cov lus nug nquag
Dab tsi yog qhov txawv ntawm OM3 thiab OM4 fiber ntau?
OM4 muaj qhov ua tau zoo dua modal bandwidth (4700 MHz ·km vs 2000 MHz ·km ntawm 850 nm) thiab txhawb nqa ntev dua rau feem ntau cov ntawv thov multimode Ethernet. Piv txwv li, 10GBASE-SR nce mus txog 300 m ntawm OM3 thiab mus txog 400 m ntawm OM4. Ob leeg siv 50 µm core thiab ua haujlwm nrog tib VCSEL-raws li transceivers thiabfiber ntau cables.
Puas yog OM5 zoo dua OM4?
Tsis tas li. OM5 yog tsim los rau wideband, multi-wavelength daim ntaub ntawv xws li SWDM4. Rau tus qauv 850 nm transceivers - suav nrog 10GBASE-SR, 40GBASE-SR4 thiab 100GBASE-SR4 - OM4 muab tib qhov kev coj ua nyob deb ntawm tus nqi qis dua. OM5 tsuas yog ntxiv cov nqi ntsuas tau thaum cov khoom siv kho qhov muag ua haujlwm hla ntau lub wavelengths hauv 850-953 nm ntau.
Dab tsi yog xim OM5 fiber ntau?
OM5 fiber ntau muaj lub tsho ntsuab ntsuab. TIA tau teev cov txiv qaub ntsuab raws li lub tsho xim xim rau OM5 kom paub qhov txawv ntawm qhov pom ntawm aqua OM3 / OM4 cables.
Kuv puas tuaj yeem siv OM4 transceivers nrog OM3 fiber ntau?
Lub transceiver nws tus kheej tsis hloov - 10GBASE-SR SFP + module ua haujlwm nrog OM3 thiab OM4 fiber ntau. Txawm li cas los xij, qhov kev txhawb nqa siab tshaj plaws nyob ntawm qib fiber ntau. Siv OM3 es tsis txhob OM4 txhais tau hais tias qhov txuas yuav tsum tau npaj ntawm OM3 deb, uas luv dua. Nco ntsoov xyuas daim ntawv teev cov ntaub ntawv module thiab suav tag nrho cov peev nyiaj poob channel.
OM3 thiab OM4 fiber ntau puas tuaj yeem sib xyaw hauv tib qhov txuas?
Nws yog lub cev ua tau vim tias ob qho tib si siv 50 µm core, tab sis tag nrho cov channel yuav tsum tau npaj ntawm OM3 kev txwv. Hauv siab -kev sib txuas ceev (40G thiab siab dua), cov qhab nias sib xyaw feem ntau poob siab vim nws txo qhov kev sib tw dhau los ntawm -nruj qhov deb thiab ua rau muaj teeb meem nyuaj.
Puas yog OM4 txaus rau 400G?
Nws nyob ntawm 400G optical standard. 400GBASE-SR4.2 txhawb OM4 txog 100 m thiab OM5 txog 150 m. Lwm yam 400G multimode variants yuav muaj fiber ntau sib txawv. Ib txwm paub meej tias tus qauv transceiver tshwj xeeb thiab nws qhov kev ncua deb ntawm koj cov qib fiber ntau ua ntej ua rau tus qauv tsim.
Dab tsi yog laser -optimized multimode fiber ntau?
Laser-optimized multimode fiber yog hais txog OM3, OM4 thiab OM5 - cov chav kawm fiber ntau uas nws cov core refractive index profiles tau tsim tshwj xeeb los txo qis qhov sib txawv hom ncua (DMD) thaum zoo siab los ntawm 850 nm VCSEL lasers. Qhov kev ua kom zoo tshaj plaws no ua rau kom siv tau cov bandwidth piv nrog cov cuab yeej cuab tam OM1 thiab OM2 fiber ntau, uas tau tsim los rau LED qhov chaw.
Kuv puas yuav tsum nruab multimode lossis ib zaug -hom fiber ntau?
Siv multimode fiber ntau rau luv - ncav cuag, tus nqi- cov lag luam rhiab heev thiab cov ntaub ntawv chaw sib txuas uas qhov kev ncua deb nyob rau hauv cov kev txwv nyob rau hauv cov lus nyob deb saum toj no. Sivtib - hom fiber ntaurau qhov kev ncua deb ntev dua, cov pob txha hauv tsev kawm ntawv, cov kev sib txuas metro lossis ib qho kev tsim kho qhov twg ntev - bandwidth scalability yog qhov kev txhawj xeeb tseem ceeb. Yog xav paub ntxiv sib piv, saib peb tsab xov xwm ntawmiav vs yas optical fiberthiab peb phau ntawv qhia rauxoob tube vs nruj buffered cable.
Xaus
Rau kev txhim kho multimode fiber ntau, OM3, OM4 thiab OM5 tsuas yog qib tsim nyog xav txog. OM1 thiab OM2 tseem muaj feem cuam tshuam rau kev tswj hwm cov cuab yeej cuab tam uas twb muaj lawm.
Xaiv OM3 thaum koj xav tau tus nqi -zoo, laser- kho qhov muag fiber ntau rau 10G txuas uas nyob zoo li ntawm 300 m. Xaiv OM4 - qib siv dav tshaj plaws hauv kev tsim kho tshiab niaj hnub no - thaum koj xav tau qhov chaw nyob deb dua thiab kev sib raug zoo nrog 10G, 25G, 40G thiab 100G luv - mus txog optics. Xaiv OM5 tsuas yog thaum koj lub transceiver txoj kev qhia tshwj xeeb suav nrog SWDM lossis lwm yam kev siv ntau-wavelength uas tau txais txiaj ntsig los ntawm kev nthuav dav ntawm 953 nm.
Ua ntej kev yuav khoom, paub meej tias koj xav tau cov ntaub ntawv tus nqi, qhov siab tshaj plaws txuas mus,connector hom, fiber ntau suav, kho qhov muag module tus qauv thiab kev txhim kho yav tom ntej. Ib qhov dej- npaj fiber ntau cog yuav tsum ua haujlwm tau zoo rau ib xyoo caum lossis ntau dua - siv sijhawm kom phim cov qib fiber ntau rau daim ntawv thov them rau tag nrho lub neej ntawm cov cabling.
