50 / 125μm thiab 62.5 / 125μm multimode fiber ntau hom fiber ntau kho qhov muag nyob hauv cov kab hluav taws xob kho qhov muag, ntawm cov 50 whichm thiab 62.5μm sawv cev rau cov tub ntxhais txoj kab uas siv rau xa cov cim kho qhov muag hauv lub fiber. 125μm sawv cev rau lub cheeb ntawm cladding, uas tiv thaiv qhov tseem ceeb thiab txwv kev tshaj tawm ntawm lub teeb nyob rau hauv cov tub ntxhais. Txawm hais tias qhov cladding qhov loj ntawm ob hom multimode fibers zoo ib yam, cov tub ntxhais sib txawv los ua lawv cov bandwidth sib txawv. Yog li, ob lub multimode fibers no puas sib xyaw tau? Dab tsi ua haujlwm nws yuav muaj rau ntawm kev xa mus ntawm kev ua haujlwm ntawm optical fiber?
Raws li ISO 11801, muaj tsib hom multimode fiber: OM1, OM2, OM3, OM4 thiab OM5. Cov tub ntxhais txoj kab uas hla ntawm OM1 multimode fiber yog 62.5 ,m, thiab cov tub ntxhais txoj kab uas hla ntawm plaub seem ntawm cov roj hmab multimode yog 50μm. Cov tsib hom multimode fiber ntau sib txawv hauv kev sib kis, sib kis deb, sheath xim thiab lwm yam. Qhov me dua qhov taub loj yog, qhov kis tau zoo dua tuaj yeem ua tiav thiab ntev kev sib kis tau.
Vim li cas multimode fiber sib xyaw?
A 62.5μm multimode fiber yog raws LED, feem ntau siv rau 10 / 100Mbps Ethernet.
Txawm li cas los xij, nrog kev txhim kho txuas ntxiv ntawm lub network, tus MULTI-hom fiber ntau nrog LED ua lub teeb ci nyob deb ntawm qhov ua tau raws li kev xa cov khoom xav tau ntawm lub network siab. 50μm multimode fiber ntau nrog VCSEL raws li lub teeb ci tau nthuav tawm. Piv nrog LED teeb pom, VCSEL 50μm ntau hom fiber ntau muaj lub zog siab dua thiab zoo dua tso zis laser. Yog li no, 50μm multimode fiber ntau thiab tau siv dav. Txawm hais tias 50μm multimode fibers tam sim no tau nruab rau hauv ntau lub network loj (xws li cov chaw zov me nyuam cov ntaub ntawv), tseem muaj ntau daim ntawv thov uas yuav tsum tau siv 62.5μm multimode fibers, yog li muaj kev thov nce ntxiv rau kev sib xyaw 50μm thiab 62.5μm multimode fibers.
Dab tsi yog cov teeb meem nrog kev sib xyaw multimode fibers?
Muaj ob hom hybrid multimode fiber ntau, ib qho yog qhov twg lub teeb nkag mus rau 50 / 125μm multimode fiber ntau los ntawm 62.5 / 125μm, thiab lwm qhov yog qhov twg lub teeb nkag mus rau 62.5 / 125μm multimode fiber los ntawm 50 / 125μm multimode fiber. Raws li muaj nyob hauv daim duab hauv qab no:
Hauv thawj kis, 50 / 125μm multimode fiber muaj qhov loj me txoj kab uas hla thiab tau yooj yim txuas rau 62,5 / 125μm multimode fiber. Hauv qhov no, qhov sib txawv thiab txuas tus Qhov sib txawv yuav tsis muaj kev cuam tshuam ntau ntawm cov kis ntawm fiber ntau. Txawm li cas los xij, thaum 62.5 / 125μm multimode fiber ntau sib xyaw nrog 50 / 125μm multimode fiber, vim tias qhov loj dua qhov taub loj ntawm yav dhau los, lub teeb nyob rau hauv 62.5 / 125μm multimode fiber yuav disperse los ntawm tub ntxhais cladding ntawm 50 / 125μm multimode fiber ntau, uas ua rau ib nrab poob. Nws tsis pom zoo kom sib xyaw ua ke 62.5 / 125μm nrog 50 / 125μm multimode fiber ntau yog tias cov fiber ntau poob loj.
Tom qab ntawd, yuav ua li cas txiav txim siab seb nws puas yuav ua tau los sib xyaw ob hom ntawm fiber ntau ntawm no thaum ua kom muaj kev sib tsoo poob qis? Qhov tseeb, cov kab ke ib txwm tuag poob ntau yam qhia tau hais tias qhov zoo tau txais kev coj ua ntau yam rau 62.5 / 125μm thiab 50 / 125μm ntau hom fiber ntau yog 0.9dB ~ 1.6dB. Yog tias qhov poob tiag tiag dhau qhov dhau ntawm qhov ntau, nws raug nquahu kom tsis txhob sib xyaw 62.5μm multimode fiber ntau nrog 50μm multimode fiber.
Txawm hais tias qhov sib txawv ntawm cov txuas txuas ua ke tau siv rau kev sib xyaw ntawm 50μm thiab 62.5μm ntau hom fiber ntau tau txiav txim siab, peb tsis tuaj yeem paub cov txiaj ntsig tshwj xeeb ntawm kev txuas txuas ntxiv ntawm ob hom ntawm cov qauv fiber ntau tsis tau kuaj raws li cov kev sib txuas qhov tseeb Cov. Yog li no, cov tuam txhab tsim hluav taws xob thiab cov koom haum tshawb nrhiav yuav sim cov qib fiber ntau hauv cov xwm txheej sib txawv los ua pov thawj nws cov kev ua tau.
Ntau txhiab qhov kev sim tau qhia tias txawm hais tias 50μm thiab 62.5μm ntau hom fiber ntau muaj cov khoom siv laser sib txawv, lawv muaj kev sib txuam tag nrho, tab sis nws raug pom zoo kom koj tsis txhob sib xyaw ntawm cov fiber ntau hauv ib qho txuas. Txwv tsis pub, npaj rau qhov tseem muaj qhov loj txuas poob. Yog tias cov kev poob yog nyob hauv koj cov peev txheej, koj tuaj yeem sib xyaw 50μm thiab 62.5μm ntau hom fiber ntau raws li tsim nyog.
Ntau hom fiber ntau sib xyaw nrog cov bandwidth / sib txawv fiber ntau manufacturers
Tsis yog tsuas yog ua tiav ntawm 62.5μm thiab 50μm ntau hom fiber ntau yog qhov tseem ceeb, tab sis kev coj ua ntau hom fiber ntau nrog cov bandwidth sib txawv lossis los ntawm cov sib txawv kuj tseem yuav tsum tau them rau. Yog tias koj xav siv cov tsoos 62.5μm multimode fiber ntau kom nce bandwidth ntawm tag nrho cov network, tsis txhob sib xyaw nws nrog 50μm multimode fiber ntau, xav txog kev sib xyaw ntawm cov bandwidth sib txawv. Qee cov neeg tsim hluav taws xob tau qhia tias fiber ntau thiab txuas tau siv tau ua ke, txawm tias lawv muaj cov pab pawg sib txawv, tsuav yog lawv tau raws li cov qauv kev lag luam.
