DWDMyog Dense Wavelength Division Multiplexing. "Dense" vim tias nws ntim cov wavelengths ze ua ke dua li yav dhau los wavelength division multiplexing txoj kev.
Intuitively, lub wavelength tuaj yeem xav tias yog ib qho 'xim'. Ntau cov xim tuaj yeem dhau los ntawm ib qho fiber ntau thiab tom qab ntawd cais tawm ntawm qhov kawg tau txais rov qab rau hauv nws cov xim sib xyaw. Txhua tus tuaj yeem hloov pauv tau rov qab mus rau hauv lub teeb liab digital.
Cov laug cam siv nyob rau txhua qhov kawg ntawm DWDM txuas yog hu ua 'transponders', uas txhua qhov hloov pauv lub teeb liab los ntawm ib txwm 'grey' optics rau hauv cov xim tshwj xeeb rau cov channel muab. Niaj hnub no, feem ntau cov transponders yog 'tunable', txhais tau hais tias ib lub rooj tsavxwm tuaj yeem tsim cov xim tsim nyog raws li software tswj.
DWDMyog siv feem ntau nyob rau hauv high-capacity long-haul networks. Rau qhov luv luv, tus nqi ntawm fiber ntau yog qis dua, yog li DWDM tsis raug nqi. Routers lossis keyboards feem ntau txuas nrog cov transponders thiab DWDM txuas yog pob tshab rau cov nodes network.
