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Tsev > Kev Paub > Ntsiab lus
Ywj siab ntawm cov teeb liab thiab qhov hluav taws xob hluav taws xob
May 08, 2018

Lub sij hawm faib multiplexer yog ib lub tshuab uas siv TDM cov cuab yeej technology thiab yog siv los ua ke ntau cov ntaub ntawv qis qis mus rau hauv ib qho kev ntsuas siab. Cov ntaub ntawv los ntawm ntau qhov chaw sib txawv yog tawg mus rau hauv ib qho ntawm ib tug neeg (cov khoom los yog cov khoom pawg ntawm cov khoom), thiab cov khoom no raug xa mus rau hauv ib qho kev txib qhia. Txhua cov ntaub ntawv xa khoom tuaj ua ib qho "lub sijhawm ntu" hauv cov kwj tso tawm cov ntaub ntawv. Cov kab sib txuas sib luag yuav tsum tau ceev cia kom cov kwj hauv cov ntaub ntawv tuaj yeem rov tuaj yeem rov mus rau qhov chaw ntawd. Hauv particular, nws tsim nyog teev cia tias tib lub cuab yeej muaj peev xwm ua tau tus txheej txheem rov qab los ntawm tib txoj cai ntawm TDM technology. Ntawd yog, cov kwj deg cov ntaub ntawv tseem ceeb yog dau mus rau ntau yam ntaub ntawv qis. Txoj kev no yog hu ua demultiplexing. Yog li, nws tshwm sim rau ob lub sij hawm faib multiplexers thiab demultiplexers kom muaj nyob hauv tib lub thawv.

WDM tshuab muaj ntau yam zoo. Bandwidth ntawm cov khoom siv fiber ntau tau siv los ua kom muaj peev xwm ntawm kev siv lub tshuab fiber ntau los ntawm ib qho ntawm ob peb mus rau ob peb lub kaum ntawm lub sij hawm uas muaj ib zaug xwb wavelength. Ntau-wavelength multiplexing yuav kis tau rau ib hom fiber ntau optical fiber, uas yuav txuag tau ntau yam fiber ntau nyob rau hauv loj-peev ntev-kis kis. Cov cables ntsia muaj tsawg dua qhov cores. Kev siv cov wavelength division multiplexing tsis yog yuav tsum tau hloov loj rau qhov qub kev ua haujlwm kom muaj kev khiav haujlwm. Vim tias cov wavelengths ntawm cov kev xa xov hauv tib lub tshuab fais fab tib neeg muaj kev ywj pheej ntawm ib leeg, cov cim nrog cov yam ntxwv txawv txav kis tau. Kev ua tiav thiab kev sib cais ntawm ntau yam kev sib txuas lus kev sib txuas lus, nrog rau cov teeb meem digital thiab cov cim analog, nrog rau cov synthesis thiab kev sib cais ntawm PDH cov cim thiab SDH cov cim; wavelength division multiplexed channels yog pob tshab rau cov hom ntaub ntawv, piv txwv li ywj siab ntawm qhov ntaus nqi thiab qhov hluav taws xob kev ua haujlwm.


Tug: Maj mam txhim khu khoom

Tom ntej: Hloov cov txaj ntsej muag los ntawm ntxais khoom ntxiv