Ob peb xyoos dhau los, fiber ntau optic cable tau dhau los pheej yig dua.Nws yog tam sim no siv rau kaum ob daim ntawv thov uas yuav tsum tau ua tiav kev tiv thaiv hluav taws xob cuam tshuam.Fiber yog qhov zoo tagnrho rau cov ntaub ntawv-tus nqi siab xws li FDDI, multimedia, ATM, lossis lwm lub network uas yuav tsum tau hloov cov ntaub ntawv loj, siv sijhawm ntev.
Lwm qhov zoo ntawm fiber ntau optic cable hla tooj liab suav nrog:
• Ntau dua nyob deb-Koj tuaj yeem khiav fiber ntau kom deb li deb li ob peb mais.• Tsawg attenuation-Lub teeb liab ua tau raws li kev tiv thaiv me me, yog li cov ntaub ntawv tuaj yeem mus deb dua.
• Kev Ruaj Ntseg-Cov kais dej hauv fiber ntau optic cable yog qhov yooj yim los kuaj xyuas.Yog tias tapping, lub cable xau lub teeb, ua rau tag nrho lub cev tsis ua haujlwm.
• Ntau dua bandwidth-Fiber tuaj yeem nqa cov ntaub ntawv ntau dua tooj liab.• Immunity-Fiber optics tiv thaiv kev cuam tshuam.
Ib hom lossis multimode?
Ib hom fiber ntau muab rau koj ntau dua tus nqi sib kis thiab mus txog 50 npaug ntau dua qhov kev ncua deb tshaj multimode, tab sis nws kuj raug nqi ntau dua.Ib hom fiber ntau muaj cov tub ntxhais me me dua li multimode fiber ntau-feem ntau 5 txog 10 microns.Tsuas yog ib lub teeb hluav taws xob tuaj yeem kis tau ntawm ib lub sijhawm.Cov tub ntxhais me me thiab ib lub teeb pom kev zoo yuav tshem tawm txhua qhov kev cuam tshuam uas tuaj yeem tshwm sim los ntawm kev sib tshooj teeb pom kev zoo, muab cov teeb liab qis qis thiab qhov kev sib kis ceev tshaj plaws ntawm txhua hom fiber ntau cable.
Multimode fiber ntau muab koj cov bandwidth siab ntawm kev kub ceev tshaj qhov ntev.Lightwaves tau tawg mus rau ntau txoj hauv kev, lossis hom, thaum lawv taug kev los ntawm cov tub ntxhais cable.Hom multimode fiber core diameters yog 50, 62.5, thiab 100 micrometers.Txawm li cas los xij, nyob rau hauv ntev cable khiav (ntau dua 3000 ko taw [914.4 ml), ntau txoj kev ntawm lub teeb tuaj yeem ua rau lub teeb liab distortion ntawm qhov kawg tau txais, ua rau cov ntaub ntawv tsis meej thiab tsis tiav.
Kev kuaj thiab lees paub fiber ntau optic cable.
Yog tias koj tau siv los lees paub Qeb 5 cable, koj yuav xav tsis thoob tias nws yooj yim npaum li cas los lees paub fiber ntau optic cable txij li thaum muaj kev tiv thaiv hluav taws xob cuam tshuam.Koj tsuas yog yuav tsum tau tshawb xyuas qee qhov kev ntsuas:
• Attenuation (los yog decibel poob) - Ntsuas hauv dB/km, qhov no yog qhov txo qis ntawm cov teeb liab lub zog thaum nws mus los ntawm fiber ntau optic cable.• Rov qab poob-Cov teeb pom kev zoo ntawm qhov kawg ntawm lub cable rov qab mus rau qhov chaw.Tus lej qis dua, qhov zoo dua.Piv txwv li, kev nyeem ntawv ntawm -60 dB zoo dua -20 dB.
• Qib refractive index- ntsuas seb lub teeb xa mus rau fiber ntau npaum li cas.Qhov no feem ntau ntsuas ntawm wavelengths ntawm 850 thiab 1300 nanometers.Piv rau lwm qhov kev khiav hauj lwm zaus, ob qhov no ua rau lub zog qis tshaj plaws hauv lub cev.(CEEB TOOM Qhov no siv tau rau multimode fiber ntau nkaus xwb.)
• Kev nthuav dav ncua sij hawm-Nov yog lub sij hawm nws yuav siv lub teeb liab taug kev los ntawm ib qho taw tes mus rau lwm qhov dhau ntawm kev sib kis.
• Lub sij hawm-domain reflectometry (TDR)-Xa cov mem tes siab mus rau ib lub cable kom koj tuaj yeem tshuaj xyuas cov kev xav ntawm lub cable thiab cais qhov tsis raug.
Muaj ntau cov fiber optic testers ntawm lub khw niaj hnub no.Basic fiber optic testers ua haujlwm los ntawm kev ci ntsa iab ntawm ib kawg ntawm cable.Ntawm qhov kawg, muaj lub receiver calibrated rau lub zog ntawm lub teeb qhov chaw.Nrog rau qhov kev sim no, koj tuaj yeem ntsuas seb lub teeb yuav mus rau lwm qhov kawg ntawm lub cable.Feem ntau, cov ntsuas no muab koj cov txiaj ntsig hauv decibels (dB) poob, uas koj mam li muab piv rau cov nyiaj poob.Yog tias qhov ntsuas poob qis dua tus lej suav los ntawm koj cov peev nyiaj poob, koj qhov kev teeb tsa zoo.
Cov tshiab fiber optic testers muaj ntau yam peev xwm.Lawv tuaj yeem sim ob qho tib si 850- thiab 1300-nm cov cim tib lub sijhawm thiab tuaj yeem tshawb xyuas koj Gable kom ua raws li cov qauv tshwj xeeb.
Thaum xaiv fiber ntau optic.
Txawm hais tias fiber ntau optic cable tseem kim dua li lwm hom cable, nws tau nyiam rau niaj hnub no kev sib txuas lus cov ntaub ntawv ceev vim tias nws tshem tawm cov teeb meem ntawm cov kab sib tw, xws li ze-kawg crosstalk (Tom ntej), electromagnetic cuam tshuam (EIVII), thiab kev ruaj ntseg ua txhaum cai.Yog tias koj xav tau cov fiber ntau cable koj tuaj yeem mus ntsibwww.mireko-cable.com.
Post lub sij hawm: Nov-02-2022