OADM
OADM feem ntau yog ib qho khoom siv pom hauv WDM cov tshuab rau kev sib txuam thiab cov kev sib txawv ntawm cov kab hluav taws xob rau hauv lossis tawm ntawm ib hom fiber ntau (SMF). Nws yog tsim rau optically ntxiv / poob ib lossis ntau CWDM / DWDM channel rau hauv ob peb kab, muab lub zog rau ntxiv lossis tso ib qho yoj yoj los yog ntau cov yoj yoj los ntawm lub suab sib txuas tag nrho. Qhov no tso cai rau cov chaw nruab nrab ntawm cov chaw nyob deb tau nkag mus rau cov ntu, kis-rau-kis fiber ntau ntu txuas rau lawv. Wavelengths tsis nqis dhau los ntawm OADM thiab nqa mus rau ntawm thaj chaw deb. Lwm txoj kev xaiv wavelengths tuaj yeem txuas ntxiv lossis tso tawm los ntawm kev ua tiav OADMs yog tias xav tau.
Kho qhov muag Amplifiers
Optical amplifiers ua kom lub zog loj lossis ntxiv qhov nce rau cov phiaj xwm kho qhov muag dhau ntawm lub fiber ntau los ntawm qhov ncaj qha rau cov duab ntawm cov teeb liab nrog lub zog ntxiv. Lawv yog cov "hauv" fiber ntau "khoom siv. Optical amplifiers ua kom nrov dua cov cim kho qhov muag hla txhua qhov ntawm ntau lub sijhawm ntev, uas yog qhov tseem ceeb heev rau DWDM txheej txheem kev siv.
Hloov Cov Hloov (Wavelengths Hloov Hloov)
Transponders hloov cov cim kho qhov muag los ntawm ib qho nkag mus rau ib qho yoj mus rau lwm qhov sib sib zog yob yws yws haum rau DWDM kev siv. Cov hloov khoom siv yog lub tshuab hluav taws xob kho qhov muag-hluav taws xob-kho qhov muag (OEO) lub teeb hloov. Tus hloov khoom ntsuas ua haujlwm OEO ua haujlwm kom hloov yoj yoj ntawm lub teeb. Hauv DWDM system, tus neeg hloov khoom siv hloov mus rau tus neeg siv khoom teeb liab rov qab mus rau lub teeb liab hluav taws xob (OE) thiab tom qab ntawd ua 2R (rov kho dua, rov kho dua tshiab) lossis 3R (rov kho dua, rov kho dua tshiab thiab rov ua haujlwm).
