Qhia rau Ib Hom Fiber
Raws li koj paub, nws muaj ob theem hom fiber ntau qhov fiber ntau: multimode fiber ntau thiab ib hom fiber ntau. Multimode fiber ntau yog qhov zoo tshaj plaws tsim kom luv luv kev kis kab, thiab yog siv rau hauv LAN systems thiab video surveillance. Ib hom fiber ntau yog qhov zoo tshaj plaws tsim rau kev kis ntev dua, ua rau nws tsim kom muaj kev sib ntsib ntev-ntev thiab ntau yam TV broadcast hauv multichannel. Rau kev nkag siab zoo dua ib hom fiber, kuv yuav sau cov ncauj lus qhia txog hauv qab no.
Tib Hom Fiber: Ib hom qauv fibers muaj ib lub iav me me, feem ntau ncig 9, tuaj yeem xa ib qho qauv ntawm lub teeb. Yog li, qhov kev sib txuas lus yog qhov me me, tsim kev sib txuas lus ntev, tiam sis tseem muaj cov khoom faib thiab kev ua kom zoo, ua kom ib hom fiber ntau dua hauv qhov kaj qhov chaw dav dav thiab kev ruaj ntseg, qhia qhov dav dav spectral narrower, zoo dua kev ruaj ntseg. Tom qab ntawd nws tau pom nyob rau ntawm 1.31 m wavelength, ib hom fiber ntau dispersion thiab waveguide dispersion ib tug zoo, lwm yog tsis zoo, tus xov tooj yog tib yam nkaus xwb. Yog li, 1.31 m wavelength fiber ntau optic kev sib txuas tau ua ib qho chaw ua haujlwm zoo heev, tam sim no yog qhov tseem ceeb ua haujlwm hauv cov tswv yim fiber optic sib txuas lus. Lub ntsiab ntawm 1.31 m ib hom qauv fiber ntau yog txiav txim siab los ntawm International Telecommunication Union ITU-T hauv kev pom zoo G652, yog li no qhov fiber optic kuj hu ua G652.
Cov lus piav qhia ntawm "Single-fiber fiber" nyob rau hauv cov ntaub ntawv nyeem: General v tsawg dua 2.405, lub fiber muaj tsuas yog ib lub ncov ntawm, yog li hu ua single-fiber fiber, nws cov tub ntxhais muaj tsawg, 3-10% microns, modal dispersion yog me me. Lub ntsiab tseem ceeb uas cuam tshuam cov fiber ntau optical kis tau nrug dav yog ntau dispersions, tab sis hom dispersion yog qhov tseem ceeb. Dispersion ntawm ib hom fiber ntau yog me me, yog li nws tuaj yeem ua rau lub teeb nrug nrog lub dav kis mus rau ntau qhov ntev.
Ib hom fiber ntau muaj lub ntsiab ntawm 10 micron, tso cai rau txoj kev sib kis kab ntsig, muaj peev xwm txo tau qhov kev txwv ntawm bandwidth thiab Modal dispersion. Vim hais tias ib hom fiber ntau hauv lub hlwb, nws tsis yooj yim los tswj cov kab nrig kis, yog li nws xav tau qis heev li laser li fiber ntau optic teeb , thiab lub ntsiab txwv ntawm tib hom fiber ntau fiber ntau cable khoom Material dispersion hom fiber ntau optical cable mas siv laser kom tau high bandwidth, vim LED yuav tso tawm coob tus teeb pom kev sib txawv nrog bandwidth ntau, yog li cov khoom faib dispersion tseem ceeb heev.
Piv nrog multimode fiber, ib hom fiber ntau yuav txhawb kev kis dua mus, nyob rau hauv 100Mbps Ethernet thiab 1Gigabit network, ib hom fiber ntau txawm tias yuav txhawb nqa ntau tshaj 5000m kis nrug.
Los ntawm tus nqi kev lag luam, vim fiber opticiver transceiver yog kim heev, yog li tus nqi siv ib hom fiber ntau dua li ntawm multimode fiber optic cable
