Nrog rau kev txhim kho txuas ntxiv ntawm kev lag luam kev sib txuas lus kho qhov muag, cov thev naus laus zis tshiab thiab kev daws teeb meem kev txuag nqi txuas ntxiv mus.Piv txwv li, cov khoom siv CWDM thiab DWDM tau siv ntau zuj zus, yog li hnub no peb yuav kawm txog CWDM thiab DWDM cov khoom!
CWDM yog tus nqi qis WDM kis tau tus mob thev naus laus zis rau txheej txheej nkag ntawm thaj chaw hauv nroog.Txuag cov peev txheej fiber ntau thiab cov nqi sib txuas, nws daws ob qhov teeb meem ntawm fiber ntau tsis txaus thiab pob tshab ntawm ntau cov kev pabcuam.Lub network tuaj yeem tsim tau thiab kev lag luam tuaj yeem nqa tawm hauv lub sijhawm luv luv.
Qhov zoo ntawm CWDM:
※ Qhov zoo tshaj plaws ntawm CWDM yog tus nqi qis ntawm cov khoom siv.
※ Nws tuaj yeem txo tus nqi khiav haujlwm ntawm lub network.
※ Nws tuaj yeem ua kom muaj peev xwm kis tau tus mob ntawm fiber ntau thiab txhim kho kev siv cov khoom siv kho qhov muag.
※ Me me thiab siv hluav taws xob tsawg.
※ Muaj qhov yooj yim thiab scalability zoo
DWDM tuaj yeem ua ke thiab xa cov wavelengths sib txawv hauv tib lub fiber ntau tib lub sijhawm.Yuav kom ua tau zoo, ib qho fiber ntau tau hloov mus rau ntau lub tshuab virtual.DWDM feem ntau muaj ob daim ntawv thov: qhib DWDM thiab integrated DWDM.
Qhov zoo ntawm DWDM:
※ Nws cov txheej txheem thiab kev sib kis ceev tsis cuam tshuam.
※ Lub multiplexer thiab splitter ntawm kev sib xyaw DWDM system yog siv cais ntawm lub transmitter thiab receiver
※ Cov khoom siv DWDM sib xyaw ua ke muaj cov qauv yooj yim thiab ntim me me, tsuas yog li ib feem tsib ntawm qhov chaw nyob los ntawm qhib DWDM, txuag cov khoom siv hauv computer.
※ Lub DWDM kev sib koom ua ke tsuas yog siv cov khoom siv tsis muaj zog (xws li multiplexers lossis demultiplexers) ntawm qhov tau txais thiab xa tawm.Cov tswv lag luam hauv xov tooj tuaj yeem tso xaj ncaj qha los ntawm cov tuam txhab tsim khoom, txo cov khoom sib txuas thiab cov nqi qis, yog li txuag cov khoom siv.
CWDM thiab DWDM yog ob qho tib si wavelength division multiplexers, yog li dab tsi yog qhov txawv ntawm lawv?CWDM (ie, sparse wavelength division multiplexing) thiab DWDM (ie, ntom wavelength division multiplexing), peb tuaj yeem pom qhov txawv ntawm ob: "dense" thiab "sparse".Sparse Wavelength Division Multiplexing, raws li lub npe qhia, yog ib tus txheeb ze ze ntawm Dense Wavelength Division Multiplexing.
Lawv qhov sib txawv yog feem ntau cuam tshuam hauv peb lub ntsiab lus hauv qab no:
1) CWDM carrier channel spacing yog qhov dav, yog li ntawd, tsuas yog 5 mus rau 6 wavelengths ntawm lub teeb tsis muaj peev xwm ua tau ntau yam ntawm tib lub optical fiber, thiab qhov txawv ntawm "sparse" thiab "dense" npe los ntawm qhov no;
2) CWDM modulated laser siv uncooled laser, thaum DWDM siv txias laser.Lub laser txias siv qhov ntsuas kub, thiab lub laser tsis txias siv hluav taws xob tuning.CWDM tam sim no nrov heev ntawm cov tuam txhab lag luam daim ntawv thov.Cias muab: DWDM yog ib tug subdivision ntawm CWDM.
3) Cov cuab yeej siv ib puag ncig txawv.CWDM feem ntau yog siv nyob rau hauv cov txheej txheem convergence thiab txheej nkag;DWDM yog siv nyob rau hauv kev sib txuas lus railway chaw ua hauj lwm.
Post lub sij hawm: Jul-03-2021