EDFA yog ib qho tseem ceeb tshaj plaws hauv DWDM system. Hauv kev tsim cov khoom siv ntawm EDFA, erbium ion yog doped rau hauv cov pa quartz fiber ntau raws li cov khoom siv hauv paus. Vim tias ntawm qhov erbium ion doping, 1550nm zog pab pawg yog muab. Cov teeb liab qub thiab lub zog siab twj tso kua mis laser tuaj yeem txhim kho qhov kev sib zog ntawm lub teeb liab kho qhov muag, thiab cov teeb liab kho qhov muag tau tuaj yeem ua kom nrov dua yam tsis hloov lub teeb liab kho qhov muag rau hauv lub teeb liab hluav taws xob.
MUX / demux yog ob qhov khoom siv tsis tseem ceeb hauv DWDM system. DWDM ua rau cov phiaj xwm optical fiber ntau xa cov lus sib txuas ntawm ob peb lub yoj yuag tib lub sijhawm, thaum MUX yog cov khoom siv lub luag haujlwm los nqa ob peb lub yoj yoj; demux yog lub hauv paus ua lub luag haujlwm rau kev sib cais ntawm cov nthwv dej uas sib sau ua ke.
OADM yog ib qho tseem ceeb thov hauv DWDM system. Nws lub luag haujlwm yog los ntxig / tshem tawm ntau txoj kab sib tshooj hauv cov kab hluav taws xob xa xov hluav taws xob, thiab tso OADM ntawm cov nchav ntawm lub network los tswj cov cim kho qhov muag ntawm cov sib txawv wavelength mus rau txoj haujlwm tsim nyog.
OXC yog cov cim txuas mus ntxiv rau cov kev sib txuas lus sib txuas lus, uas yog siv rau ntau cov xov xwm xa mus thiab cov kab kev tshwm sim tsim los ntawm DWDM. Nws cov haujlwm muaj xws li network router thiab telecom hloov. OXC tau teeb tsa ntawm qhov chaw sib txuas tseem ceeb ntawm lub network kom sau cov tswv yim ntawm cov wavelengths sib txawv ntawm txhua cov tog neeg, thiab tom qab ntawd xa cov ntawv xa mus rau qhov tsim nyog optical fiber ntawm lub nthwv dej tsim nyog. Nws tuaj yeem muab peb txoj haujlwm hloov ua haujlwm: kev hloov pauv fiber ntau, yoj hloov thiab yoj hloov.
