CWDMmuaj 18 bands, los ntawm 1270nm mus rau 1610nm, thiab lub ncua sij hawm ntawm txhua pab pawg yog 20nm. Txhua channel ntawm DWDM muaj 3 hom kev sib nrug raws li qhov xav tau: 0.4nm (50Ghz), 0.8nm (100Ghz) thiab 1.6nm (200Ghz), 100GHz (los ntawm C17 txog C61, yog qhov feem ntau siv, haum rau cov khoom siv pa) ; 50GHz (los ntawm C17 txog H61 rau cov khoom siv channel siab).
2.CWDMwavelengths los ntawm 1470nm mus rau 1610nm feem ntau siv DFB lasers. Vim tias lub sijhawm channel loj, CWDM cov khoom siv thiab lasers pheej yig dua li DWDM li.
3. CWDM optical channel spacing yog dav dua, thiab tus naj npawb ntawm multiplexed optical wavelengths ntawm tib fiber ntau yog tsawg dua li ntawm DWDM. Qhov no yog vim li cas rau lub appellations ntawm "tuab" thiab "dense";
4. CWDM optical modulation txais uncooled laser, uas yog tuned electronically; thaum DWDM txais cov cua txias laser, uas yog kho los ntawm qhov kub thiab txias.
5. Txij li thaum qhov kub thiab txias tsis sib xws nyob rau hauv ntau qhov sib txawv ntawm qhov muag teeb, nws nyuaj heev thiab raug nqi los siv qhov ntsuas kub. CWDM zam qhov teeb meem no, yog li txo tus nqi zoo heev. Tam sim no, tus nqi ntawm CWDM system feem ntau tsuas yog 30 feem pua ntawm DWDM;
6. Lub zog siv hluav taws xob thiab lub cev loj ntawm CWDM system yog tsawg dua li ntawm DWDM system.
