Raws li ISO 11801 tus qauv, cov roj ntsha multimode tuaj yeem faib ua tsib hom: OM1, OM2, OM3, OM4 thiab OM5. Ntawm lawv, cov tub ntxhais txoj kab uas hla ntawm OM1 multimode fiber yog 62.5μm, thiab cov tub ntxhais txoj kab uas hla ntawm plaub ntxiv multimode fibers yog 50μm. Tsib tsib hom ntawm cov xov tooj hluav taws xob sib txawv muaj cov sib txawv ntawm cov khoom sib kis, sib kis deb, thiab cov xim sheath. Qhov me dua qhov taub loj dua, ntau dua qhov sib kis uas qhov kho qhov muag muaj peev xwm ua tau, thiab ntev ntev cov kis ntawm cov kab hluav taws xob.
Vim li cas peb thiaj li xav sib tov nrog cov roj carbon multimode?
Lub 62.5μm multimode fiber siv lub teeb ci hluav taws xob diodes (LED) ua lub teeb ci, thiab feem ntau siv rau 10 / 100Mbps Ethernet.
Nrog cov kev txhim kho txuas ntxiv ntawm cov nqi sib txuas hauv network, multimode fiber nrog LED ua lub teeb ci tau kom deb dhau los ua kom tau raws li qhov yuav tsum tau sib kis ntawm cov kev sib txuas hauv high-speed network. Raws li qhov tshwm sim, 50μm multimode fiber nrog lub kab noj hniav ntsug nto emitting laser (VCSEL) raws li lub teeb ci tau tshwm sim. Piv nrog LED pom, 50μm multimode fiber ntau nrog VCSEL raws li lub teeb ci tau muaj zog ntau dua thiab zoo dua tso zis laser. Yog li, kev siv 50μm multimode fiber ntau tau ua ntau thiab dav dua. Txawm hais tias ntau qhov kev sib txuas loj (xws li cov chaw zov me nyuam cov ntaub ntawv, thiab lwm yam) tau teeb tsa nrog 50μm multimode fibers, tseem muaj ntau daim ntawv thov uas yuav tsum tau 62.5μm multimode fibers. Yog li no, kuj tseem muaj qhov xav tau ntawm kev sib xyaw 50μm thiab 62.5μm multimode fibers. ua kom loj hlob.
Dab tsi yog cov teeb meem nrog hybrid multimode fiber ntau?
Muaj ob kis ntawm hybrid multimode fiber. Ib qho yog tias lub teeb nkag ntawm 62,5 / 125µm multimode fiber ntau mus rau 50 / 125µm multimode fiber, thiab lwm qhov yog tias lub teeb nkag ntawm 50 / 125µm multimode fiber mus rau 62.5 / 125µm multimode fiber. Multimode fiber. Raws li qhia hauv qab no:
Rau thawj kis, 50 / 125μm multimode fiber muaj lub taub loj dua me thiab tuaj yeem yooj yim txuas nrog cov 62.5 / 125μm multimode fiber. Hauv qhov no, qhov txhaum cai thiab kev sib dhos lub kaum sib txawv yuav tsis cuam tshuam rau lub fiber. Cov kev sib kis tau tshwm sim ntau dhau cuam tshuam. Txawm li cas los xij, thaum 62.5 / 125μm multimode fiber yog sib xyaw nrog 50 / 125μm multimode fiber, vim yog qhov loj dua qhov taub loj ntawm yav dhau los, thaum ob txoj kab hluav taws xob txuas nrog, cov teeb hauv 62.5 / 125μm multimode fiber yuav tshem tawm los ntawm lub fiber. Ib feem ntawm qhov kev poob tshwm sim hauv kev tuav pov hwm ntawm 50 / 125μm multimode fiber dispersed hauv tub ntxhais. Yog tias cov fiber ntau poob loj, nws tsis pom zoo kom sib xyaw ua ke 62.5 / 125μm thiab 50 / 125μm multimode fibers.
Yog li, yuav ua li cas txiav txim siab seb nws puas yuav ua tau los sib xyaw ob hom ntawm cov xov tooj hluav taws xob ntau no thaum uas ua kom muaj kev sib tsoo tsawg? Qhov tseeb, cov kab ke ib txwm coj ploj tau qhia hauv qee cov ntawv. Piv txwv, hauv" Optical Fiber Technology Phau Ntawv Qhia" tawm los ntawm Delmar thaum Lub Yim Hli 2005, nws tau hais meej txog kev lees txais yuav ntawm 62.5 / 125μm thiab 50 / 125μm multimode fibers. Cov khoom poob tau yog 0.9dB ~ 1.6dB. Yog tias qhov poob ploj tiag tshaj qhov ntau ntawm no, nws raug nquahu kom tsis txhob sib xyaw 62.5μm multimode fiber ntau nrog 50μm multimode fiber.
Txawm hais tias qhov sib xyaw tsim nyog poob rau cov sib xyaw siv los ntawm 50µm thiab 62.5µm multimode optical fibers tau qhia meej, peb tsis tuaj yeem paub cov txiaj ntsig tshwj xeeb ntawm kev txuas txuas tsis tau ntawm ob lub fiber ntau qhov muag tsis pom tshwj tsis yog tias qhov txuas txuas tseeb tau raug kuaj. Yog li no, cov tuam txhab tsim hluav taws xob fiber ntau thiab cov koom haum tshawb nrhiav yuav ua cov kev ntsuam xyuas ntawm kev siv cov khoom sib txuas ntawm cov multimode optical fiber ntau nyob rau ntau qhov xwm txheej los ua pov thawj nws tau. Piv txwv li, ntau qhov kev sim ua los ntawm FOA qhia tau hais tias qhov poob ntawm cov fiber ntau nrog LED raws li lub teeb ci dua siab dua li ntawm cov fiber ntau nrog VCSEL ua cov khoom siv hluav taws xob, thiab cov hluav taws xob ploj nrog VCSEL teeb ci ntawm 20 meters yog siab tshaj ntawd ntawm 1 meter lossis 520 meters. Txhua tus qis. Kev ntsuam xyuas ntawm cov fiber ntau jumper siv LED raws li lub teeb pom kev ua tsis tau vim tias nws txoj kev txuas ploj dua li ntawm 0.9dB rau 1.6dB, tab sis lub coupling poob ntawm fiber ntau jumper siv VCSEL raws li lub teeb ci tau nyob rau hauv ib txwm muaj.
Ntxiv rau FOA, Corning Optical Fiber kuj tau ua ntau qhov kev sim los ua pov thawj qhov ua tau thiab kev ntseeg siab ntawm kev sib xyaw 50µm thiab 62.5µm multimode fibers. Tsis zoo li FOA, Corning tau ua ntau qhov kev soj ntsuam, yog li ntawv tshaj qhia yog qhov ua tau zoo dua thiab kev qhia paub. Qhov kev ntsuam xyuas pom tias qhov sib xyaw ntawm cov khoom siv ntau hom fiber ntau nrog laser thiab 800nm / 1300nm LED raws li cov khoom siv hluav taws xob tsis muaj qhov tseem ceeb hauv kev poob.
Raws li tau hais los saum toj no, ntau txhiab txoj kev sim tau ua pov thawj tias txawm hais tias cov laser ntawm 50µm thiab 62.5µm multimode fiber ntau qhov sib txawv, lawv muaj peev xwm ua tiav. Txawm li cas los xij, nws raug nquahu kom koj tsis txhob sib xyaw ua ke ntawm cov kab sib txawv hauv ib qho txuas. Txwv tsis pub, npaj rau qhov tseem muaj qhov txuas loj dua. Yog tias qhov poob yog nyob hauv koj qhov ntau, koj tuaj yeem sib tov 50µm thiab 62.5µm multimode fibers raws li qhov tsim nyog.
Kev sib xyaw ntawm cov multimode fibers ntawm txawv bandwidths / txawv cov fiber ntau manufacturers
Tsis yog tsuas yog kev coj ua ntawm 62.5μm thiab 50μm multimode fibers tseem ceeb, tab sis kev coj ua ntawm cov plaub hau multimode nrog cov bandwidth sib txawv los yog los ntawm cov neeg muag khoom sib txawv kuj xav tau kev saib xyuas. Yog tias koj xav siv cov tsoos 62.5μm multimode fiber ntau kom nce bandwidth ntawm tag nrho cov network es tsis txhob sib xyaw nws nrog 50μm multimode fiber, koj yuav tsum xav txog qhov sib xyaw ntawm cov fibers nrog nyias bandwidth. Optical fiber manufacturers xws li Corning tau ua pov thawj tias kom ntev li ntev tau cov fiber ntau kho qhov muag thiab cov kev sib txuas ua raws cov qauv kev lag luam, lawv tuaj yeem siv ua ke txawm tias muaj cov kab sib txawv.