Thaum xaiv WDM,DWDMthiabCCWDM, cov neeg siv khoom feem ntau tsis meej pem txog CWDM, DWDM thiab CCWDM. Qhov txawv ntawm peb cov khoom no yog dab tsi thiab yuav xaiv lawv li cas?
WDM ua haujlwm li cas?
Wavelength division multiplexing (WDM) yog ib txhij kis tau tus mob ntawm ob peb lub teeb liab sib txawv wavelengths ua ke ntawm ib tug fiber ntau optical. Nws feem ntau muaj cov nthwv dej sib xyaw thiab cov khoom siv nthwv dej. Lub luag haujlwm tseem ceeb ntawm MUX yog muab ntau lub teeb liab wavelengths nyob rau hauv ib qho kev kho qhov muag fiber ntau ntawm qhov kawg xa. Lub luag haujlwm tseem ceeb ntawm DEMUX yog cais ntau lub wavelength signals xa mus rau hauv ib qho kev kho qhov muag fiber ntau ntawm qhov kawg tau txais. Lub hom phiaj tseem ceeb ntawm WDM yog txhawm rau ua kom muaj bandwidth ntawm fiber ntau optical. Yog li ntawd, WDM systems tau siv dav los ntawm cov tuam txhab kev sib txuas lus kom nthuav dav los ntawm WDM yam tsis tas yuav nteg fiber ntau.
Yuav xaiv CWDM thiab DWDM li cas?
CWDM (Coarse Wavelength Division Multiplexer) yog qhov sib txawv Wavelength Division Multiplexer, tseem hu ua Coarse Wavelength Division Multiplexer. DWDM (Dense Division Multiplexer) yog ibDense WDM.
Muaj qhov sib txawv loj ntawm CWDM thiab DWDM hauv lub sijhawm channel. Channel qhov sib txawv yog qhov sib txawv ntawm qhov sib txawv ntawm cov neeg nqa khoom zaus ntawm ob txoj kab uas nyob ib sab thiab tuaj yeem siv los tiv thaiv kev cuam tshuam ntawm cov channel. Lub sijhawm wavelength ntawm CWDM channel yog 20nm, thaum DWDM channel ncua sijhawm yog 1.6 / 0.8 / 0.4nm (200GHz / 100 GHz / 50 GHz), uas tsawg dua CWDM. Qhov sib txawv ntawm qhov sib txawv ntawm cov channel kuj ua rau muaj qhov sib txawv ntawm qhov bandwidth thiab lub peev xwm uas CWDM thiab DWDM tuaj yeem nqa tau. DWDM module tuaj yeem txhim kho qhov system bandwidth thiab muaj peev xwm los ntawm kev siv cov kab sib txuas sib txuas kom nqa tau ntau lub teeb liab ntawm tib lub fiber ntau optical.
Qhov zoo tshaj plaws ntawm CWDM system yog nws cov nqi qis, uas yog qhov tseem ceeb ntawm cov lim thiab laser. Qhov dav wavelength ncua sij hawm ntawm 20nm kuj coj qhov zoo ntawm cov kev cai qis rau lub laser thiab cov qauv yooj yim ntawm optical MUX / DEMUX rau CWDM. Cov qauv yog yooj yim; cov txiaj ntsig tau zoo dua, yog li tus nqi txo. DWDM' tus nqi nce feem ntau yog vim tus nqi siab ntawm laser diodes thiab lub tshuab cua txias laser siv los tswj cov wavelength stability.
CCWDM yog mini WAVELENGTH division multiplexer thiab mini version ntawm CWDM. Lub TFF (thin film filter) raws li WDM thev naus laus zis ua haujlwm tib yam li CWDM. Qhov txawv yog tias CCWDM SIV qhov chaw pub dawb thev naus laus zis, thiab nws cov pob loj tau txo qis heev piv nrog CWDM module, thiab qhov kev nkag tsis tau qis dua thiab qhov sib xws zoo dua. Nws tuaj yeem hloov CWDM cov khoom lag luam hauv kev sib txuas lus, kev lag luam network, PON tes hauj lwm, cable TELEVISION thiab lwm yam.
Thaum twgCWDM/DWDM/CCWDMscheme raug xaiv, qhov kev pom zoo yuav tsum tau ua raws li lawv cov yam ntxwv thiab qhov sib txawv thiab cov kev xav tau thiab cov peev nyiaj ntawm daim ntawv thov scenario kev tsim kho yuav tsum raug txiav txim siab.
HTF yog ib qho ntawm cov tuam txhab ua ntej tshaj plaws los tsim thiab tsim cov khoom lag luam WDM hauv Suav teb, thiab cov khoom lag luam thiab cov kev pabcuam txhim khu kev qha tau mob siab rau pab 5G kev lag luam!
