om4-fiber-rau-siab-ceev-siv
Multimode fiber ntau tau pom los ntawm OM ("hom kho qhov muag") raws li tau teev tseg hauv ISO / IEC 11801 tus qauv:
OM1, rau cov fiber ntau nrog 200/500 MHz-km kev tshaj tawm (OFL) bandwidth ntawm 850/1300 nm (feem ntau yog 62.5 / 125 μm fiber)
OM2, rau cov fiber ntau nrog 500/500 MHz-km OFL bandwidth ntawm 850/1300 nm (feem ntau 50/125 μm fiber)
OM3, rau 850-nm laser-optimized 50-micron cable nrog cov qauv zoo hloov kho (EMB) ntawm 2000 MHz / km., Tsim rau 10 Gb / s kis.
OM4, rau qhov siab-loj bandwidth 850-nm laser-optimized 50-micron cable zoo modal bandwidth ntawm 4700 MHz / km.
Niaj hnub no, qhov kev hloov zuj zus mus txuas ntxiv nrog kev txhim kho OM4 fiber ntau thaum kev lag luam npaj nws tus kheej rau nrawm ntawm 40 thiab 100 Gb / s.
OM3 thiab OM4 yog ob qho tib si laser-optimized multimode fiber (LOMMF) thiab raug tsim kho kom haum rau cov kev sib txuas ceev xws li 10, 40, thiab 100 Gbps. Ob qho tag nrho yog tsim rau siv nrog 850-nm VCSELS (ntsug-kab noj hniav nto-emitting lasers) thiab muaj aqua sheaths.
Thaum lub 10 Gigabit Ethernet (10GbE) tus qauv tso tawm xyoo 2002, cov kab hluav taws xob fiber ntau sib txuas ntawm 10GBASE-SR tau ua tiav rau tsawg kawg yog 300 meters dhau Optical Multimode 3 (OM3) fiber ntau. OM3 yog hom kev coj ntawm fiber ntau multimode tau tso tawm hnub no hauv cov ntaub ntawv chaw, tab sis nws tsis yog qhov zoo tshaj plaws fiber ntau lawm.
Fiber ntau Optical Multimode 4 (OM4) tau tsim kho nyob rau xyoo 2009 los ntawm Kev Lag Luam Kev Lag Luam Kev Lag Luam Kev Lag Luam. OM4 yog tam sim no qhov tseeb thiab loj tshaj plaws multimode fiber thiab IEEE tau teeb tsa kev txhawb nqa deb ntawm 10GbE mus rau tsawg kawg 400 meters. Muab cov nqi them rau ib hom transceivers, OM4 fiber ntau yog qhov kev xaiv zoo tshaj rau feem pua me me ntawm cov neeg siv xav khiav 10Gb / s hla kev sib txuas ntawm 300 txog 550 meters (lossis tseem me feem pua uas xav tias yuav khiav 40 lossis 100Gb / s ntawm 100 thiab 150 meter).
OM4 cable tuaj yeem raug suav tias yog kev txhim kho ntawm tus qauv OM3 uas twb muaj lawm. Cov kev ua haujlwm tseem ceeb sib txawv nyob rau hauv bandwidth cov lus qhia tshwj xeeb rau qhov TIA cov qauv tau teev tseg peb qho qauv hauv qab no: cov qauv siv tau zoo ntawm qhov tsawg kawg ntawm 4,700 MHz-km ntawm 850 nm; overfilled modal bandwidth ntawm tsawg kawg 3,500 MHz-km ntawm 850 nm; overfilled modal bandwidth ntawm tsawg kawg 500 MHz-km ntawm 1,300 nm. Ob qho kev sib tw ib hom fiber ntau hauv kev ua tau zoo thaum raug txo nqi tsawg dua los siv.
Thaum 40GbE thiab 100GbE tus qauv tso tawm xyoo 2010, OM4 tau tsim rau hauv tus qauv thiab ua tiav qhov nrug ntawm 150 metres ntawm OM4 fiber thaum OM3 fiber ntau mus 100 meters. 90 feem pua ntawm tag nrho cov chaw zov me nyuam cov ntaub ntawv muaj lawv cov khiav hauv qab 100 metres yog li nws yeej cia li los txog qhov teeb meem them tus nqi nyob ntawd. Laser-optimized multimode fiber tau lees paub tias yog qhov nruab nrab ntawm kev xaiv los txhawb nqa cov ntaub ntawv xov xwm kev kub ceev. Qhov tseeb, OM4 fiber ntau txhais lub cim rau lwm tiam multimode optical fiber rau kev kub ceev fiber ntau kis tau.
Kev lag luam tus nqi rau OM4 fiber ntau yog tsawg dua li siv tib singlemode vim tus nqi ntawm Opti-electronics. Ntawm 40 Gbps cov nqi kwv yees yog 3 zaug siab dua thiab ntawm 100 Gbps cov nqi kwv yees yog 10 zaug siab dua. Tsis zoo li Multimode, Tib qho kev daws teeb meem tsis siv ntau txoj kev xaim thiab lasers kom ua tiav qhov ceev ntawm 40/100 Gbps; hloov qhov kev siv CWDM yog siv ntau.
High-speed fiber ntau optic khoom tsev neeg tam sim no suav nrog OM4 MTP fiber ntau cable thiab Ua si sibtham, fiber ntau cable, thau tso tseg ua ntej lub rooj sibtham cable thiab cov fiber ntau optic dhia, thiab lwm yam
