Li cas los xaiv ntawm Om1-om5 multimode fiber ntau?

"Om" sawv ntsug rau "Optical multimode," lub thoob ntiaj teb qauv tsim rau cov qhab nia sib luag. Tam sim no, cov ntsiab lus sib txuam fiber ntau dhia (TIA) thiab cov khoom lag luam hauv ntiaj teb

I. Dab tsi yog qhov txawv ntawm multimode thiab ib - hom?

Sing - hom fiber ntau (smf):Tso cai rau tsuas muaj ib hom teeb kom propagate. Cov tub ntxhais uas hla yog kwv yees li 8-9μm, nrog cladding lub cheeb ntawm 125μm.

Ntau cov fiber ntau (hli):Tso cai rau ntau hom qauv ntawm lub teeb rau propagate ib txhij nyob rau hauv ib fiber. Tub ntxhais diameters yog 50μm lossis 62.5μm.

Piv rau MMF, SMF txhawb nqa ntau dua kev hloov mus deb. Los ntawm 100mbps Ethernet txog 1g gigabital tes hauj lwm, SMF tuaj yeem pab txhawb ntxiv tshaj 5000m. MMF yog tsim nyog tsuas yog rau nruab nrab- rau {} Luv} Luv luv thiab luv luv Lans, thiab cov ntaub ntawv chaw.

Muaj ntau ntau hom lus ntawm MMF, txhua tus nrog nws cov yam ntxwv ua kev ua haujlwm tshwj xeeb.

Ii. OM1-om5: Cov Evolution ntawm Multimode Fiber
Om1, om2, om4, om4, thiab om5 sawv cev rau areerative naming ntawm multimode fiber ntau. "Om" luv luv "kho qhov muag multimode." Cov lej ntawm cov lej uas yog qhia txog kev ua raws caij nyoog ntawm cov qauv kev tawm - ib tus lej ntau dua yog xa tawm tom qab. Om1 fiber yog qhov ntxov tshaj plaws, thaum om5 fiber yog qhov tseeb version.

III. Cov yam ntxwv sib piv ntawm tsib tiam: om1 rau om5

• OM1 Fiber:

Feem ntau cov teeb meem lub tsho txiv kab ntxwv thiab siv lub teeb ci LED.

Core loj yog 62.5μm, cladding inch yog 125μm (feem ntau hu ua 62.5 / 125μm OM1).

Thaum nwstauTxhawb 10GB eternet, qhov kev sib kis tau tshaj plaws yog tsuas yog 33 meters.

Feem ntau siv rau 100mbit / s eternet applications.

OVEFILLED Tua tawm (OFL) Bandwidth: 200 Mhzhand · KM ntawm 850NM, 500 MHHNAnd.

• Om2 fiber:

Kuj tseem muaj lub tsho txiv kab ntxwv thiab siv lub teeb ci LED.

Tub ntxhais cov kab uas hla yog nqaim: 50μm.

Txhawb 10 tus gbit / s kev ua haujlwm txog 82 meters, tab sis feem ntau siv rau 1g (1000mbps) Ethernet.

Txhawb wavelengths ntawm 850nm thiab 1300nm.

Ntawml bandwidth: 500 mhzhan.

• OM3 Fiber:

Tag nrho Om3 thiab Om4 siv ib lub tsho ntoo Aqua ntsuab thiab muaj 50μm tub ntxhais lub taub.

Om3 yog laser -}}} multimode fiber ntau (Lulksl), tsim rau cov kab noj qab zib (ntsug}}} emitting lasers).

Txhawb 40g thiab 100g cov ntawv thov ethernet txog li 100m. Feem ntau siv rau 10G ethernet hauv 300m.

Minimum Modal Bandwidth (MBW) / Effective Modal Bandwidth (EMB): 2000 MHz·km at 850nm (laser-optimized for VCSELs).

• OM4 Fiber:

Tsis tas li Laser -}} ectimized rau 850nm vcsels.

NYEEM: 4700 MHELLA NTAWM 850NM.

Piv rau Om3, Om4 txhawb nqa ntev dua ntawm tib cov ntaub ntawv cov ntaub ntawv: 400m rau 10G ethernet, 150m rau 40g / 100g eternet.

OM4 cov fiber ntau yog rov qab tau tshaj tawm nrog Om3.

• Om5 fiber:

Shares tib yam 50μm tub ntxhais lub taub raws li OM2, OM3, thiab OM4. Siv tib lub laser tib (VCSELS) thiab muaj tib yam tsawg kawg MBW cov lus qhia me me ntawm 850nm li Om4 fiber.

Ua raws li OM4 cov lus tshwj xeeb ntawm 850NM.

Qhov sib txawv: Tsim qauv raws li cov neeg sib txawv dav (WB mmf), muab cov khoom siv txuas ntxiv mus siv cov wavelength ntau dua (swdm) thev naus laus zis. Swdm siv plaub WDM wavelengths (880nm, 910nm, 950-940nm) tsis pub dhau 8 x 505gbe kis tus nqi.

Lub ris tsho tiv thaiv xim rau ib tus tia yogErika violet, txawm hais tiaskua qaub ntsuabfeem ntau siv nyob rau hauv kev ua lag luam.

IV. Vim li cas om5 qhov "nyiam tshiab"? Cov Qauv Sib Txawv Sib Tham
Txij li thaum OM1 thiab OM2 pab tsis tau 25gbps thiab 40GBs cov ntaub ntawv cov ntaub ntawv, Om4 tau yog thawj cov kev xaiv rau kev txhawb 25G, 40g, thiab 100g eternet.

OM3:50μm cov tub ntxhais, laser -}} ectimized ntawm 850nm. Txhawb 10GB / S Ethernet txog 300M siv 850nm vcsels.

Om4:Kev hloov kho rau Om3, ua kom zoo rau txo cov hom kev sib txawv qeeb (dmd) thaum lub siab hloov, muaj ntau yam chaw ncav cuag:400mRau 10G ethernet, 150m rau 40g / 100g.

Cov Tub Ntxhais Sib Txawv (OM3 VS OM4 VS OM5):

Om4:Muab teev tsuas yog thaum 850NM (4700 MHzz.

Om5:Muab teev ntawmob yam850nm (tib lub min . 4700 mhzhank km ua om4)thiab953nm (ntau dua los yog sib luag rau 2470 MHH, ua kom cov Swdmataus rau ntau dua thiab kev siv wavelength.

Zog:Om5 sivErika violet(Tia Raug Cai) / Txiv qaub ntsuab (cov khoom lag luam ib txwm), om4 siv aqua ntsuab.

Ua Haujlwm:

Om4 txhawb 10GB / s, 40GB / s, thiab 100GB / S kis tau.

Om5 tsom rau kev ua kom muaj 40g, 100g,200g, thiab 400ghigh - cov ntawv thov ceev. Los ntawm kev txhawb nqa plaub Swdm cov kev cai (txhua lub tsev nqa 25g), nws ua rau 100g ethernetet dhau xwbib khubntawm fibers, drastically txo cov fiber ntau suav xav tau rau high - kev sib txuas ceev.

OM5 tau rov qab tag nrho tau tshaj OM3 thiab OM4, tso cai rau cov chaw tsim muaj ntau lub lag luam chaw ua haujlwm (chaw kawm, vaj tse). Zuag qhia tag nrho, om5 surpasses om4 hauv kev sib kis muaj peev xwm (siv swdm), txhawb nqa cov ntaub ntawv cov ntaub ntawv (200g / 400g), thiab txo nqi fiber ntau rau ib txuas.

V. Yav Tom Ntej Zoo Li Cas rau OM5 MULLICODY Fiber
Driven by growing demand for high-speed networks, multimode fiber is evolving towards lower loss, higher bandwidth, and multi-wavelength multiplexing. Piv rau Om1 / Om3 / OM4, om5 muaj cov ntsuas phoo ntawv superi thiab yoog raws li cov khoom siv hluav taws xob ntau dua nrog cov pej xeem ntau dua. Nws cov nqi thiab kev noj haus fais fab tseem nyob qis dua ib qho {{9} hom fiber ntau. Thiaj li, OM5 cov fiber ntau yog ua rau muaj thoob plaws kev saws me nyuam hauv 100g / 200g / 400g hyperscale cov ntaub ntawv nyob rau yav tom ntej.