Tib neeg feem ntau xav tias CWDM qhov system yog qhov kev siv nyiaj tsawg dua rau DWDM uas tam sim no siv dav. Vim tias qhov zoo ntawm CWDM thev naus laus zis nyob hauv qhov kev siv cov khoom lag luam pheej yig xa tawm cov lasers uas tsis tas yuav txias thiab tsis tshua muaj nqi siv cov ntxaij lim dej dhau los.
Ntxiv mus, yog tias siv cov CWDM thev naus laus zis, kev hloov pauv me me pheej yig dua tuaj yeem siv. Txawm li cas los xij, vim muaj qhov kis tau CWDM channel loj, tus naj npawb ntawm wavelengths muaj rau hauv qhov system yuav raug txo kom tsawg, uas txwv qhov kis tau ntawm lub peev xwm ntawm lub system.
Raws li tam sim no ITU G.694.2, qhov siab tshaj 18 CWDM wavelengths tuaj yeem nyob ntawm 20nm Team sib. Rau ntau daim ntawv thov, qhov nruab nrab txheem ib hom fiber ntau (SSF) muaj qhov ploj heev ntawm 8 nthwv cua. Yog li, CWDM thev naus laus zis raws li G.694.2 tsuas yog siv 8 ntu ntawm SSF, lawv yog 1470, 1490, 1510, 1530, 1550, 1570, 1590 thiab 1610nm feem. Txog tam sim no, ntev npaum li tus neeg yuav khoom' s WDM network xav tau ntau txoj kev, nws yuav tsum hloov mus siv DWDM.
Vim tias DWDM muaj lub sij hawm sib yoj me me, nws tso cai ntau qhov ntau ntawm cov xov tooj (feem ntau 32, 64, 128 raws), thiab cov ntu ntu tuaj yeem mus txog 200, 100, lossis tseem 50 GHz, tab sis tus nqi ntawm txhua cov channel muaj kuj nce siab. Yog li, cov neeg siv khoom yuav tsum ntsuas qhov kev txhim kho yav tom ntej ntawm lawv cov lag luam ntau thiab txiav txim siab seb yuav nruab CWDM system nrog cov tsis yooj yim ntawm cov nqi qis dua, lossis teeb tsa DWDM cov txheej txheem nrog cov pib ua haujlwm ntau dua nrog yooj dua dua.
