Dab tsi yog qhov txawv ntawm CWDM / DWDM wavelength division multiplexing khoom?
Tam sim no, txoj hauv kev zoo los daws cov ntaub ntawv xov xwm sib kis tau ntau ntxiv yog siv CWDM wavelength division multiplexing khoom thiab DWDM wavelength division multiplexing khoom, tab sis lawv txawv ntawm ntau yam.
(1) Channel sib nrug
Channel sib nrug yog txhais raws li qhov sib txawv ntawm lub nominal cab kuj zaus ntawm ob qhov chaw kho qhov muag raws thiab feem ntau yog siv los tiv thaiv inter-channel cuam tshuam. CWDM wavelength division multiplexing khoom muaj qhov dav dav dua li DWDM wavelength division multiplexing khoom, uas tuaj yeem xa 18 wavelengths nyob rau hauv ib daim phiaj spectral los ntawm 1271 nm mus rau 1611 nm nrog cov channel sib nrug ntawm 20 nm. DWDM wavelength division multiplexing khoom tuaj yeem xa 40, 80 lossis 160 wavelengths, thiab qhov sib nrug ntawm cov channel tuaj yeem yog 0.8 nm.
(2) kis nrug deb
Txij li thaum lub wavelengths ntawm ntom wavelength division multiplexing khoom (DWDM) muaj kev koom ua ke nyob rau hauv cov txheej txheem fiber ntau kis tau tus mob, DWDM wavelength division multiplexing khoom yuav kis tau ntev tshaj li CWDM wavelength division multiplexing khoom. CWDM wavelength division multiplexing cov cuab yeej tsis tuaj yeem ua tiav qhov kev ncua deb tsis pub dhau tam sim no, thiab nws qhov siab tshaj plaws kis tau tus mob tsuas yog 160 mais, thaum qhov kev ncua deb ntawm DWDM wavelength division multiplexing khoom yog ntau dua li ntawm CWDM wavelength division multiplexing khoom.
(3) modulated lasers
Lub kaw lus ntawm CWDM wavelength division multiplexing cov cuab yeej muaj qis dua ntawm cov kev ntsuas ntawm lub laser, feem ntau yog siv lub laser uncooled; Lub kaw lus ntawm DWDM wavelength division multiplexing khoom yuav tsum tau siv lub tshuab cua txias, thiab lub tshuab cua txias tau txais kev hloov kho qhov kub thiab txias kom ntseeg tau tias DWDM system. Nrog rau kev ua tau zoo dua, kev nyab xeeb dua thiab lub neej ntev dua, DWDM wavelength division multiplexers siv zog ntau dua li CWDM wavelength division multiplexing devices siv uncooled lasers.
(4) tus nqi
Qhov kub thiab txias ntawm DWDM wavelength division multiplexing khoom system tsis zoo ib yam nyob rau hauv ib tug dav wavelength ntau yam, yog li thaum lub tshuab cua txias laser siv los kho qhov kub thiab txias, kev siv tus nqi ntawm DWDM wavelength division multiplexing khoom system yog nce. Tsis tas li ntawd, ib qho system ntawm DWDM wavelength division multiplexing cov cuab yeej kuj feem ntau yog plaub mus rau tsib npaug kim tshaj li qhov system ntawm CWDM wavelength division multiplexing khoom. Txawm li cas los xij, nrog qhov muaj koob meej ntawm qhov ntom ntom wavelength division multiplexers (DWDM), tus nqi ntawm DWDM optical modules ze li 20 feem pua -25 feem pua qis dua li ntawm CWDM optical modules.
