Txawm hais tias sib txuas cov zej zog lossis kev ncua nrawm, nrawm thiab qhov tseeb yog ob qho tseem ceeb uas tau txais kev sib txuas lus fiber ntau uas nqa cov haujlwm tseem ceeb. Cov neeg siv yuav tsum tau txais kev sib txuas lus nrawm dua thiab 5G txawb kev sib txuas kom ua tiav telemedicine, lawv lub tsheb nyob hauv nroog, kev sib tham video thiab lwm yam kev sib tham sib dhos. Nrog kev rov tshwm sim ntawm cov chaw ntawm cov ntaub ntawv thiab kev txhim kho nrawm nrawm thiab kev txhawb nqa ntawm 800g thiab saum toj no, tag nrho cov yam ntxwv fiber ntau tau dhau los ua qhov tseem ceeb.
Raws li ITU-T G.650.3 Lub sij hawm siv kho qhov muag tau ua tiav (OTD), thiab ua kom muaj kev ntsuas kho qhov muag tau ua kom tiav thiab ua kom muaj kev ntsuas kho qhov muag tau ua kom tiav. Yog li ntawd, tswj CD qhov tseem ceeb yog qhov tseem ceeb los ua kom muaj kev sib raug zoo thiab ua tau zoo.
Txawm hais tias CD yog tus yam ntxwv ntuj ntawm tag nrho cov kev txuas ntxiv ntawm cov teeb meem dav dav, raws li cov teeb meem ntawm kev ncua ntev, raws li cov teeb meem ntawm cov ntaub ntawv sib kis ntev dua 10 gbps. CD tuaj yeem cuam tshuam lub cim zoo, tshwj xeeb tshaj yog cov tshuab sib txuas lus high-rel-ceev, thiab kev sim siab yog qhov tseem ceeb los daws cov kev sib tw no.
CD yog dab tsi?
Thaum lub teeb pulses ntawm txawv wavagate incagate hauv optical fibers, qhov dispersion ntawm lub teeb ci tuaj yeem ua rau cov mem tes txo qis. Muaj ob hom kev dispersion: cov khoom tawg thiab waveGuide dispersion.
Cov khoom tawg yog ib qho kev xam pom txog txhua yam ntawm cov wavelength, uas tuaj yeem ua rau muaj kev sib txawv ntawm kev sib txawv ntawm cov chaw taws teeb mus rau lwm lub sijhawm sib txawv.
WaveGuide discersion tshwm sim nyob rau hauv WaveGuide qauv ntawm cov duab WaveLUCE, qhov twg qhov muag ntawm cov tub ntxhais thiab cladding ntawm cov fibers, uas muaj txawv chaw ua haujlwm. Qhov no ua rau muaj kev hloov pauv ntawm txoj kab uas hla ntawm hom kev sib txawv thiab muaj kev sib txawv hauv kev teeb liab nrawm ntawm txhua lub nthwv dej.
Kev tswj cov qib CD yog qhov tseem ceeb kom tsis txhob tshwm sim ntawm lwm cov kev cuam tshuam, yog li xoom CD tsis pom zoo. Tab sis CD yuav tsum tau tswj hwm ntawm qib uas tsis muaj kev cuam tshuam tsis zoo rau cov cim kev ncaj ncees thiab kev pabcuam zoo.
Dab tsi yog qhov cuam tshuam ntawm fiber yam ntawm dispersion?
Raws li tau hais ua ntej lawm, CD yog ib qho kev xam pom tej yam ntxwv ntawm txhua qhov siv hluav taws xob, tab sis cov fiber ntau lub luag haujlwm hauv kev tswj CD. Network cov haujlwm tuaj yeem xaiv "kev faib tawm" dispersion fibers lossis fibers nrog dispersion rho tawm kom txo tau cov kev cuam tshuam ntawm CD hauv ib qho yoj txawv ntawm ib qho wavelength ntau yam.
Feem ntau cov fiber ntau hauv cov tes hauj lwm niaj hnub no yog tus qauv ITU-t G.652 fiber nrog ntuj dispersion. ITU-T G-653 XOOM Dispersion ua tau cov khoom siv fewdm
Thaum kawg, cov neeg ua haujlwm yuav tsum nkag siab cov hom fiber ntau ntawm lawv cov network. Yog tias feem ntau ntawm cov qauv siv kho qhov muag yog txheem G.652, tab sis qee tus yog lwm hom fimers, ces yog tias CDs nyob rau txhua qhov txuas tsis tuaj yeem pom, qhov kev pabcuam zoo yuav cuam tshuam.
Hauv kev xaus
Chromatic discersion tseem muaj kev sib tw uas yuav tsum tau hais kom muaj kev ntseeg tau thiab ua tau zoo ntawm cov tshuab sib txuas lus high-spe-ceev ntawm kev sib txuas lus siab. Fiber ntau yam ntxwv thiab kev xeem yog qhov tseem ceeb los daws cov kws sib txuas lus thiab cov kws ua haujlwm tsim kho hauv ntiaj teb tseem ceeb. Nrog kev txhim kho txuas ntxiv thiab nthuav dav ntawm lub network, cov muag yuav txuas ntxiv ua lag luam thiab tsim txoj hauv kev txhawb cov thev naus laus zis.
Lub sij hawm ncua: Lub sijhawm 20-2025