Kev xaiv ntawm OM1, OM2, OM3, OM4, thiab OM5 multimode fiber ntau tsis yog hais txog kev xaiv cov cable tshiab tshaj plaws ntawm lub txee. Nws yog hais txog kev ua tau zoo ntawm fiber ntau rau transceivers uas koj npaj yuav siv, qhov kev ncua deb koj cov kev sib txuas yuav tsum npog, thiab seb koj cov nroj tsuag cabling yog ib qho cuab tam uas twb muaj lawm lossis kev teeb tsa tshiab. Phau ntawv qhia no sib piv tag nrho tsibmultimode fiber ntauhom nrog cov ntaub ntawv nyob deb tiag tiag, cov qauv kev siv cov qauv, thiab qhov xwm txheej-raws li cov lus qhia xaiv kom koj tuaj yeem txiav txim siab txog kev yuav khoom lossis kev txiav txim siab tsim.
Teb ceev: Yam Multimode Fiber Koj Yuav Tsum Siv?
Yog tias koj xav tau kev txiav txim siab sai ua ntej nyeem qhov kev sib piv tag nrho, ntawm no yog luv luv version. OM1 thiab OM2 yog cov qib qub fiber ntau uas tsis txhawb 10G Ethernet ntawm qhov ua tau zoo. OM3 yog qhov nkag tau -theem laser- kho qhov muag fiber ntau rau 10G txuas mus txog 300 m thiab 40G / 100G parallel- optic txuas mus txog 70-100 m. OM4 ncua cov kev ncua deb - 400 m ntawm 10G thiab 100–150 m ntawm 40G / 100G - thiab yog qhov dav tshaj plaws siv ntau hom fiber ntau hauv cov ntaub ntawv tam sim no thiab tsev kawm ntawv tsim. OM5 qhia OM4 qhov kev ua tau zoo ntawm 850 nm tab sis ntxiv qhov kev lees paub bandwidth ntawm 953 nm, uas tsuas yog qhov tseem ceeb thaum koj sivluv-wavelength division multiplexing (SWDM) transceiverskom txo cov fiber ntau suav rau 100G lossis 400G daim ntawv thov.
OM1 vs OM2 vs OM3 vs OM4 vs OM5 Sib piv Table
Cov lus hauv qab no qhia txog cov ntsiab lus tseem ceeb los ntawmANSI/TIA-568.3-EthiabISO / IEC 11801 Kev Tswj Xyuas Kev Lag LuamCov qauv, nrog rau IEEE 802.3 Ethernet nrug kev siv. Qhov kev ncua deb qhia yog cov qauv siab tshaj plaws -raws li qhov tseem ceeb rau txhua daim ntawv thov; tiag- ntiaj teb ncav cuag kuj nyob ntawm connector poob, splice suav, thiab tag nrho cov channel attenuation.
| Specification | OM 1 | OM 2 | OM 3 | OM 4 | OM 5 |
|---|---|---|---|---|---|
| Core / Cladding | 62.5/125 µm | 50/125 µm | 50/125 µm | 50/125 µm | 50/125 µm |
| Jacket Xim (TIA) | Txiv kab ntxwv | Txiv kab ntxwv | Aqua | Aqua (los yog Erika Violet) | Txiv qaub ntsuab |
| Tsim Lub Teeb Source | LED | LED | VCSEL (850 nm) | VCSEL (850 nm) | VCSEL (850–953 nm) |
| Modal Bandwidth (EMB ntawm 850nm) | Tsis teev (OFL: 200 MHz · km) | Tsis tau teev tseg (OFL: 500 MHz ·km) | 2000 MHz · km | 4700 MHz · km | 4700 MHz · km |
| Modal Bandwidth (EMB ntawm 953 nm) | - | - | - | Tsis tau teev tseg | 2470 MHz · km |
| 1000BASE-SX (1G) nrug | 275 m | 550 m | 550 m | 550 m | 550 m |
| 10GBASE-SR (10G) nrug | 33 m | 82 m | 300 m | 400 m | 400 m |
| 40GBASE-SR4 (40G, 8-fiber MPO) nrug | Tsis txhawb | Tsis txhawb | 100 m | 150 m | 150 m |
| 100GBASE-SR4 (100G, 8-fiber MPO) nrug | Tsis txhawb | Tsis txhawb | 70 m | 100 m | 100 m |
| Hom Siv Case | Legacy low -links ceev | Legacy / 1G ntsia puag | Niaj hnub nimno 10G lub hauv paus; luv 40G / 100G | Data center 10G / 40G / 100G nrog cov npoo ntxiv | SWDM-raws li 100G/400G qhov twg fiber ntau raug txwv |
Nyeem cov lus no:Ntawm 10GBASE-SR, OM3 nce mus txog 300 m thiab OM4 nce mus txog 400 m. Ntawm 100GBASE-SR4 nrog rau qhov sib piv optics dhau ibMPO connector, OM3 poob rau 70 m thaum OM4 tuav ntawm 100 m. Cov lej no tuaj ntawm IEEE 802.3 thiab tau lees paub los ntawm cov neeg muag khoom transceiver suav nrogCisco's 10G SFP + cov ntaub ntawv nplooj ntawvthiabCisco's 100G QSFP cov ntaub ntawv. Yog tias koj cov kev sib txuas nyob hauv thaj tsam 70-100 m thiab koj npaj 100G tib lub sijhawm - optic tsiv teb tsaws, qhov sib txawv ntawm OM3 thiab OM4 dhau los ua qhov txwv tsim tiag, tsis yog kev xav.
OM1 thiab OM2: Thaum Legacy Fiber tseem muaj lub luag haujlwm
OM1 (62.5/125 µm) thiab OM2 (50/125 µm) tau tsim rau LED-raws li kev sib kis thiab qis-ceev Ethernet. Ob leeg siv lub tsho txiv kab ntxwv raws li TIA cov qauv, yog li cable luam tawm - qhia txog dab neeg yog qhov tseem ceeb - lub tsho xim ib leeg tsis tuaj yeem paub qhov txawv ntawm lawv. Qhov tseeb, qhov kev hloov kho tshiab kawg ntawm TIA tus qauv (ANSI/TIA-568.3-E) tau hloov OM1 thiab OM2 cov xim xim rau cov ntawv txuas ntxiv, qhia tias cov qib no tsis pom zoo rau kev teeb tsa tshiab.
OM1 tuaj yeem nqa tau 10G Ethernet, tab sis tsuas yog rau li 33 m - luv luv rau feem ntau cov cabling khiav. OM2 txuas 10G mus txog kwv yees li 82 m, uas tseem zoo hauv qab ntawm 300-400 m muaj nyob nrog OM3 lossis OM4. Rau 1000BASE-SX ntawm 1G, OM1 txhawb nqa 275 m thiab OM2 txhawb nqa 550 m, yog li ob qho tib si tseem ua haujlwm rau Gigabit Ethernet hauv cov tsev uas twb muaj lawm.
Tswv yim scenario:Koj tswj hwm lub tsev kawm ntawv nrog OM1 lossis OM2 cabling tau teeb tsa thaum xyoo 1990s. Qee qhov txuas tseem nqa 1G tsheb thiab ua haujlwm hauv qhov tshwj xeeb. Ua ntej hloov kho dua tshiab, txheeb xyuas cov kab ntawv sau cov lus dab neeg kom paub meej tias qib fiber ntau tiag tiag, sim channel poob nrog ib qhooptical poob test set, thiab xyuas seb cov transceivers uas koj npaj yuav xa tawm tseem sau cov kev txhawb nqa rau 62.5 µm (OM1) lossis legacy 50 µm (OM2) fiber ntau. Yog tias lub hom phiaj hloov kho tom ntej yog 10G, tus nqi - txoj hauv kev zoo yog feem ntau yuav rov qab -kab nrog OM3 lossis OM4 es tsis yog kho thaj tsam ntawm 33 m lossis 82 m nrug qab nthab.
OM3: Lub ntsiab lus nkag rau niaj hnub Laser-Optimized Multimode
OM3 yog thawj qib multimode fiber ntau tau tsim tshwj xeeb rau 850 nm VCSEL kis tau tus mob, tau tsim nyob rau xyoo 2002. Nws muaj qhov ua tau zoo modal bandwidth (EMB) ntawm 2000 MHz ·km ntawm 850 nm, uas yog ib qho tseem ceeb ntawm cov LED-era bandwidth ntawm OM1 thiab OM2. Hauv cov lus siv Ethernet, OM3 txhawb nqa 10GBASE-SR txog 300 m, 40GBASE-SR4 txog 100 m, thiab 100GBASE-SR4 txog 70 m.
Rau ntau lub lag luam thiab lub tsev kawm ntawv network, OM3 yog ib qho khoom siv, tus nqi -kev pib ua haujlwm tau zoo rau 10G kev xa tawm siv duplexLC fiber ntau connectors. Nws kuj tseem txhawb nqa 40G thiab 100G dhau qhov sib npaug ntawm optics nrogMPO / MTP thaj cords, txawm hais tias nyob deb dua li OM4.
Qhov twg OM3 pib xav tias nruj:Ntawm 100GBASE-SR4, OM3's 70 m txwv tuaj yeem txwv tsis pub muaj cov ntaub ntawv loj dua lossis cov neeg hla hauv tsev kawm ntawv - txuas. Yog tias koj qhov txuas txuas feem ntau poob rau hauv 70-150 m ntau thiab 100G kev tsiv teb tsaws yog nyob rau hauv daim ntawv qhia, OM4 muab lub ntsiab lus ntxiv rau lub taub hau rau tib lub connector thiab transceiver infrastructure.
OM4: Tus qauv tam sim no rau siab -Speed Data Center thiab Campus Links
OM4 tau pom zoo los ntawm TIA hauv xyoo 2009 (TIA-492AAAD) thiab lees paub los ntawm IEEE 802.3ba hauv xyoo 2010. Nws nce qhov kev ua haujlwm zoo ntawm bandwidth mus rau 4700 MHz ·km ntawm 850 nm - ntau dua ob npaug OM3's · 200. Qhov kev txhim kho bandwidth txhais ncaj qha mus rau qhov kev txhawb nqa ntev dua: 400 m ntawm 10GBASE-SR, 150 m ntawm 40GBASE-SR4, thiab 100 m ntawm 100GBASE-SR4.
OM4 tam sim no yog qhov siv dav tshaj plaws multimode fiber ntau qib hauv cov ntaub ntawv tshiab thiab kev teeb tsa hauv tsev kawm ntawv. Lub TIA pom zoo OM3 thiab OM4 laser- optimized multimode fiber ntau raws li cov xov xwm nyiam rau cov ntaub ntawv chaw txuas, thiab feem ntau 10G / 40G / 100G transceiver modules tau lees paub tiv thaiv OM4 mus txog qhov tshwj xeeb.
OM3 vs OM4 ntawm 100G - piv txwv:100GBASE-SR4 txuas siv 8-fiberMPO daim kab xevmus txog 70 m ntawm OM3 tab sis 100 m ntawm OM4. Hauv nruab nrab -cov ntaub ntawv loj nrog kab - mus rau - kab nyob ib ncig ntawm 80–90 m, OM3 yuav poob thaum OM4 hla. Qhov sib txawv ntawm 30 m yog qhov ua tau zoo vim ntau lub koom haum ua rau OM4 rau ib qho tshiab siab -ceev cabling cog. Yog xav paub ntxiv txog kev sib tsoo, saib pebOM3 vs OM4 multimode fiber sib piv.
OM5: Wideband Multimode rau SWDM thiab Fiber- suav txo
OM5 yog tus qauv tsim nyob rau xyoo 2016 (TIA-492AAAE) thiab tau piav qhia raws li kev siv dav hauv ntau hom fiber ntau (WBMMF). Nws sib koom tib yam 50/125 µm core thiab 4700 MHz ·km EMB ntawm 850 nm li OM4, tab sis nws ntxiv qhov tshwj xeeb bandwidth thib ob: 2470 MHz ·km ntawm 953 nm. Qhov no dual -wavelength specification yog lub ntsiab lus ntawm OM5, thiab nws muaj nyob rau ib lub hom phiaj tshwj xeeb - los lav kev ua tau zoo thoob plaws 850–953 nm wavelength qhov rai siv los ntawm SWDM transceivers.
SWDM thev naus laus zis xa plaub kab ntawm plaub qhov sib txawv wavelengths hla ib khub fiber ntau. 100G SWDM4 transceiver, piv txwv li, xa 4 × 25 Gb / s ntawm wavelengths ntawm 850 nm mus rau kwv yees li 940 nm tshaj duplexfiber optic thaj cordses tsis xav tau 8-fiber MPO los ua ke. Qhov no txo cov fiber ntau suav thiab tuaj yeem txo cov cabling ceev hauv qhov chaw khib nyiab.
Qhov tseem ceeb misconception txog OM5: Cisco daim ntawv dawb ntawm OM4 vs OM5ua kom meej meej. Ntawm 850 nm, OM5 thiab OM4 muaj ib yam EMB specifications. Rau feem coob ntawm cov multimode tam sim no transceivers - 10GBASE-SR, 40GBASE-SR4, 100GBASE-SR4 - tag nrho cov kev khiav hauj lwm ntawm 850 nm nkaus xwb, OM5 tsis muaj qhov zoo tshaj OM4. OM5 tus nqi ntxiv tsuas yog tshwm sim thaum lub transceiver siv wavelengths siab tshaj 850 nm, raws li SWDM optics ua.
Yog tias koj tam sim no thiab nyob ze - lub sij hawm kho qhov muag architecture yog raws li tus qauv 850 nm transceivers, them tus nqi them rau OM5 tsis yuav qhov kev ncua deb lossis bandwidth ntxiv. Yog tias koj tab tom npaj siab rau SWDM-raws li 100G lossis 400G dhau duplex fiber ntau thiab fiber ntau- suav txo yog lub hom phiaj tsim, OM5 yog qhov peev txheej zoo.
Yuav Xaiv Li Cas: Ib Qhov Scenario-Txoj Kev Xaiv Raws Li
Scenario 1: Tswj lossis Txuas Ntxiv Txoj Cai OM1/OM2 Network
Pib los ntawm kev lees paub qhov koj muaj. Xyuas cov kab ntawv sau cov lus dab neeg - tsis yog lub tsho xim nkaus xwb - vim tias ob qho tib si OM1 thiab OM2 tuaj yeem muaj lub tsho txiv kab ntxwv. Tom qab ntawd kuaj cov channel poob thiab xyuas kom meej tias koj cov transceivers tam sim no tseem txhawb nqa qib fiber ntau. Yog tias cov cabling uas twb muaj lawm ua tau raws li 1G daim ntawv thov yuav tsum tau thiab tsis muaj 10G kev hloov kho yuav tshwm sim, txuas ntxiv siv nws. Yog tias koj tab tom npaj 10G rollout, rov-cab nrog OM3 lossis OM4 yuav luag txhua zaus siv tau ntau dua li sim khiav 10GBASE-SR dhau OM1's 33 m txwv lossis OM2's 82 m txwv.
Ib qho tseem ceeb ntawm kev sib raug zoo: OM1's 62.5 µm core yog lub cev sib txawv ntawm 50 µm core siv los ntawm OM2 txog OM5. Koj tsis tuaj yeem tsuas yog kho OM1 rau hauv 50 µm kab hauv lub cev yam tsis muaj cov tub ntxhais kawm - qhov loj me tsis sib haum. Yog tias koj cov nroj tsuag muaj kev sib xyaw ntawm 62.5 µm thiab 50 µm fiber ntau, kho lawv raws li hom kab sib cais thiab npaj raws li.
Scenario 2: Tshiab 10G Enterprise lossis Campus Deployment
Rau 10G txuas tshiab siv 10GBASE-SR SFP + transceivers thiab duplexLC lossis MTP / MPO kev sib txuas, ob qho tib si OM3 thiab OM4 siv tau. OM3 npog txog li 300 m thiab raug nqi tsawg dua ib 'meter'. OM4 npog txog 400 m thiab muab cov npoo zoo dua rau yav tom ntej 40G / 100G tsiv teb tsaws. Yog tias koj qhov chaw nyob ntev tshaj plaws - lub tsev ua haujlwm nyob qis dua 200 m thiab cov peev nyiaj nruj, OM3 yog qhov kev xaiv tsim nyog. Yog tias khiav mus kom ze lossis tshaj 300 m, lossis yog tias koj xav tias yuav hloov mus rau 40G / 100G hauv cov cabling cog 15-20 xyoo lifecycle, OM4 yog qhov zoo dua thawj koom ruam.
Scenario 3: Data Center 40G/100G Parallel-Kev xa tawm Optic
Ntawm 40GBASE-SR4 thiab 100GBASE-SR4, OM4 dhau los ua qhov ua tau zoo. Qhov 100 m ncav cuag 100G ntawm OM4 piv rau 70 m ntawm OM3 feem ntau yog qhov sib txawv ntawm tus qauv huv thiab ib qho uas yuav tsum tau ua rau nruab nrab patching lossis luv dua cable khiav. Hauvsiab -cov ntaub ntawv ceev ceev ib puag ncig, khub OM4 lub cev cables nrog ua ntej- txiav MPO cov rooj sib txoos kom ceev tshaj plaws, txhim khu kev qha tshaj plaws.
Scenario 4: Npaj rau SWDM 100G / 400G dhau Duplex Fiber
Yog tias koj lub tsev tsim tshwj xeeb npaj siv SWDM transceivers - piv txwv li, 100G SWDM4 khiav plaub lub wavelengths dhau ib khub duplex - OM5 yog qhov tsim nyog fiber ntau. Lub lav 2470 MHz·km bandwidth ntawm 953 nm ua kom muaj kev ua tau zoo ib yam thoob plaws plaub SWDM channel. Yog tsis muaj OM5, qhov bandwidth ntawm qhov ntev wavelengths tsis tau qhia meej thiab txawv ntawm cov chaw tsim khoom, uas tsim ib qho kev sib txuas ntawm cov peev nyiaj tsis tuaj yeem.
Scenario 5: Thaum twg los ntsuas Singlemode Hloov
Multimode fiber ntau yog tsim los rau luv luv - ncav cuag - feem ntau nyob rau hauv 400–550 m. Yog tias koj qhov phiaj xwm cuam tshuam nrog kev cuam tshuam ntawm - lub hauv paus caj dab khiav ntau dua 500 m, txoj hauv kev ntev hauv tsev kawm ntawv, lossis ib qho txuas uas yuav tsum muaj kev ncua deb yav tom ntej tsis paub meej,singlemode fiber ntauyog qhov nruab nrab tsim nyog. Singlemode optics raug nqi ntau dua rau ib qhov chaw nres nkoj, tab sis cov fiber ntau nws tus kheej tsis kim dua, thiab singlemode tshem tawm qhov kev ncua deb ntawm qab nthab nkaus - raug 10G singlemode txuas mus rau 10 km. Lo lus nug zoo tsis yog "qib twg OM?" - qee zaum nws yog "qhov txuas no puas yog multimode?"
Feem ntau yuam kev thaum xaiv OM Fiber Hom
Piv txwv tias hom OM tshiab tshaj plaws yog qhov kev xaiv zoo tshaj plaws
OM5's ntxiv bandwidth specification ntawm 953 nm tsuas yog qhov tseem ceeb yog tias koj lub transceivers siv wavelengths saum 850 nm. Rau tus qauv 850 nm optics (10GBASE-SR, 40GBASE-SR4, 100GBASE-SR4), OM5 ua tau zoo ib yam rau OM4. Yuav OM5 rau kev xa tawm uas tsuas yog siv 850 nm transceivers yog them rau lub peev xwm koj yuav tsis siv.
Ignoring sab transceiver ntawm qhov sib npaug
Fiber hom teeb tsa lub qab nthab bandwidth, tab sis txuas kev ua tau zoo nyob ntawm qhov ua tiav channel: qib cable,connector polish zoo, splice poob, thiab transceiver specifications. Ob qhov sib txuas OM4 zoo ib yam nrog cov sib txuas sib txawv suav lossis cov peev nyiaj poob yuav mus txog qhov sib txawv. Ib txwm ntsuas tag nrho cov channel, tsis yog daim ntawv lo rau cable xwb.
Siv lub tsho xim raws li ib qho kev txheeb xyuas tus kheej
OM1 thiab OM2 ob leeg siv lub tsho txiv kab ntxwv. OM3 thiab OM4 ob leeg siv lub tsho aqua (txawm tias qee tus neeg muag khoom siv erika violet rau OM4). Tib txoj kev txhim khu kev txheeb xyuas yog cov kab ntawv sau cov lus dab neeg - cov ntawv luam tawm ntawm lub tsho sab nrauv uas hais txog cov lus qhia fiber ntau. Thaum lub sij hawm installation, cov ntaub ntawv, thiabkev txiav txim, ib txwm txheeb xyuas los ntawm kev sau cov lus dab neeg.
Sib tov fiber ntau qhov ntau thiab tsawg yam tsis muaj kev sim
OM2, OM3, OM4, thiab OM5 txhua tus sib koom 50 µm core thiab tuaj yeem sib cuam tshuam lub cev. Txawm li cas los xij, sib xyaw OM qib sib txawv hauv tib qhov txuas (piv txwv li, patching OM3 lub cev cable nrog OM4.patch kab) txhais tau hais tias qhov txuas kev ua tau zoo yog txwv los ntawm ntu tsis muaj zog. Qhov no tuaj yeem ua haujlwm, tab sis nws yuav tsum raug txheeb xyuas tawm tsam tag nrho cov nyiaj siv nyiaj poob qis dua li xav tias yuav zoo. Kev sib xyaw 62.5 µm (OM1) nrog 50 µm (OM2–OM5) fiber ntau qhia cov tub ntxhais- qhov loj me tsis sib xws uas ua rau muaj teeb meem loj thiab yuav tsum zam tag nrho.
Cov lus nug nquag
OM3 vs OM4 rau 100G: qhov twg yog qhov kev xaiv nyab xeeb?
OM 4. Ntawm 100GBASE-SR4, OM4 txhawb 100 m piv rau OM3's 70 m. Cov npoo ntxiv no tseem ceeb hauv kev xyaum - tshwj xeeb tshaj yog thaum koj suav txog qhov poob ntawm cov khoom sib txuas, kev sib txuas ntawm cable, thiab qhov tseeb tias "70 m" tuaj yeem dhau los ua "tsis txaus" tom qab lub vaj huam sib luag tau ntxiv rau nruab nrab - txoj kev. Yog tias koj tab tom siv 100G multimode, OM4 yog qhov kev pom zoo dav dav rau ob qho tib si IEEE 802.3 daim ntawv thov cov rooj thiab cov lus qhia tus neeg muag khoom loj.
Puas yog OM5 hloov singlemode fiber ntau?
Tsis yog. OM5 tseem yog ib qho multimode fiber ntau nrog qhov ua tau zoo tshaj plaws hauv ntau pua meters. Singlemode fiber txhawb qhov kev ncua deb ntawm 10 km thiab dhau ntawm tib cov ntaub ntawv tus nqi. OM5 txo cov fiber ntau rau luv luv - mus txog SWDM txuas, tab sis nws tsis txuas ntau hom rau hauv ib qho chaw nyob deb. Yog tias koj cov kev sib txuas ntau tshaj li ntawm 400-500 m, singlemode tseem yog qhov kev xaiv tsim nyog.
Dab tsi yog xim OM5 fiber ntau thiab vim li cas nws tseem ceeb?
OM5 siv lub tsho ntsuab txiv qaub, raws li tau teev tseg hauv TIA-568.3-E. Cov xim sib txawv pab cov neeg teeb tsa thiab cov kws tshaj lij txheeb xyuas qhov dav dav multimode fiber ntau pom, tiv thaiv nws los ntawm kev tsis meej pem nrog OM3 lossis OM4 (aqua) lossis nrog cov cuab yeej cuab tam OM1 / OM2 (txiv kab ntxwv). Txawm li cas los xij, ib txwm paub meej tias hom fiber ntau los ntawm kab ntawv sau cov lus dab neeg, tsis yog lub tsho xim xwb.
OM3 thaj cords puas tuaj yeem siv rau hauv OM4 txuas?
Lub cev, yog - ob leeg yog 50/125 µm fiber ntau nrog cov khoom sib txuas. Tab sis OM3 ntu yuav muaj qis dua bandwidth dua li OM4 lub cev, yog li qhov kev sib txuas tag nrho yog txwv los ntawm OM3 ntu. Rau cov hlua luv luv (1-5 m), qhov cuam tshuam yog feem ntau negligible. Rau qhov sib xyaw ua ke ntev dua, sim tag nrho cov channel kom paub meej tias nws ua tau raws li koj daim ntawv thov poob thiab qhov xav tau bandwidth.
Puas yog OM1 tseem siv tau rau kev txhim kho kev lag luam tshiab?
Feem ntau, tsis muaj. OM1 tsis tuaj yeem txhawb nqa 10G Ethernet tshaj li kwv yees li 33 m, thiab TIA-568.3-E tau hloov OM1 cov lus qhia tshwj xeeb rau ib qho khoom ntxiv. Rau ib txoj haujlwm tshiab cabling, OM3 yog qhov tsawg kawg nkaus pom zoo qib. Tus nqi sib txawv ntawm OM1 thiab OM3 yog tus txheeb ze me me rau tag nrho kev teeb tsa ua haujlwm, thiab OM3 muab txoj hauv kev hloov kho kom ntev dua.
Dab tsi tseem ceeb tshaj: cable hom lossis hom transceiver?
Ob qhov teeb meem - lawv tsim ib qho kev sib koom ua ke. Lub transceiver txiav txim siab lub wavelength, modulation scheme, thiab tus naj npawb ntawm fiber ntau txoj kab uas yuav tsum tau. Lub cable txiav txim siab qhov bandwidth, attenuation, thiab deb lub teeb liab tuaj yeem mus. Xaiv OM4 cable tsis them rau qhov tsis ncaj ncees lawm transceiver, thiab xaiv qhov zoo transceiver tsis kho bandwidth -limited cable. Pib nrog lub hom phiaj daim ntawv thov (10G, 40G, 100G), txheeb xyuas tus qauv transceiver (SR, SR4, SWDM4), thiab tom qab ntawd xaiv cov qib fiber ntau uas txhawb nqa qhov yuav tsum tau ncav cuag raws li cov xwm txheej ntawd.
Thaum twg koj yuav tsum tso tseg kev kho dua tshiab multimode thiab txav mus rau singlemode?
Xav txog singlemode thaum txuas qhov deb tshaj 300-500 m, thaum yav tom ntej bandwidth xav tau taw tes rau 200G / 400G dhau kev khiav ntev dua, lossis thaum tus nqi pheej rov kho dua multimode fiber ntau ze rau ntawm ib qho - lub sij hawm tus nqi ntawm ib hom singlemode. Ntau lub koom haum tau txais ib qho "singlemode for backbone, multimode for intra-kab" lub tswv yim uas ua kom zoo dua rau tus nqi thiab kev ncua deb. Pebsinglemode vs multimode fiber ntau qhianpog lub moj khaum ntawm kev txiav txim kom meej ntxiv.
Koj puas tuaj yeem sib xyaw ntau hom OM fiber ntau hauv tib qhov txuas?
Kev sib xyaw cov qib nrog tib lub 50 µm core (OM2, OM3, OM4, OM5) lub cev muaj peev xwm ua tau, tab sis qhov txuas qhov bandwidth zoo thiab muaj peev xwm nyob deb yuav raug txwv los ntawm qhov qis tshaj -qib ntu. Kev sib xyaw 62.5 µm (OM1) nrog 50 µm fiber ntau ua rau muaj kev nkag siab siab ntawm cov tub ntxhais- qhov loj me tsis sib haum thiab tsis pom zoo. Yog tias koj yuav tsum suav nrog cov fiber ntau sib xyaw, suav tag nrho cov peev nyiaj poob qis thiab tshawb xyuas tawm tsam IEEE daim ntawv thov qhov nyiaj qis tshaj plaws ua ntej mus nyob.
Xaus
OM1 vs OM2 vs OM3 vs OM4 vs OM5 kev txiav txim siab los ntawm plaub yam: dab tsi cov ntaub ntawv koj xav tau, nyob deb npaum li cas koj cov kev sib txuas yuav tsum ncav cuag, dab tsi transceivers koj npaj yuav siv, thiab seb koj puas ua haujlwm nrog cov cabling uas twb muaj lawm lossis pib tshiab. OM1 thiab OM2 yog nyob rau thaj chaw qub txeeg qub teg - ua haujlwm rau Gigabit Ethernet tshaj cov nroj tsuag uas twb muaj lawm tab sis ua tsis tau zoo rau kev xa tawm tshiab 10G lossis siab dua. OM3 yog qhov muaj peev xwm thiab kev xaiv nyiaj txiag rau 10G txuas hauv 300 m. OM4 yog cov lus pom zoo tam sim no rau cov ntaub ntawv chaw thiab tsev kawm ntawv tsim lub hom phiaj 10G, 40G, thiab 100G nrog cov ntsiab lus nyob deb. OM5 yog ib qho kev xaiv tshwj xeeb uas khwv tau nws tus nqi tsuas yog thaum SWDM transceivers yog ib feem ntawm tus tsim.
Ua ntej xaiv cov qib fiber ntau, daim ntawv qhia koj qhov txuas txuas mus, paub meej tias tus qauv transceiver rau txhua daim ntawv thov, tshuaj xyuas tag nrho cov nyiaj siv nyiaj poob haujlwm suav nrogadaptersthiabcov khoom sib txuas, thiab npaj rau yam tsawg kawg ib qho kev hloov kho ceev hauv cov cabling nroj tsuag lub neej voj voog. Txoj kev ntawd ua rau muaj kev ruaj khov thiab raug nqi ntau dua - cov txiaj ntsig tau zoo dua li tsuas yog xaiv cov fiber ntau tshiab tshaj plaws los yog pheej yig tshaj muaj.
