Nrog rau kev siv WDM cov tshuab dav dav, ntau thiab ntau qhov teeb meem tau pib tshwm sim, tshwj xeeb tshaj yog rau kev sib kis mus ntev WDM, qhov teeb meem ntawm kev txo qis tau dhau los ua qhov teeb meem tseem ceeb. Txawm hais tias qee qhov kev tawm suab nrov xws li EDFA, FRA, SOA tau daws qhov teeb meem ntawm lub teeb liab attenuation, lawv kim heev ntawm cov nqi, tshwj xeeb tshaj yog txaus ntshai ntawm kev siv (FRA) thiab siv tsis tau thaum cov khoom siv tsis sib xws yuav tsum tau txuas nrog (xws li 1300nm. carrier wavelength conversion rau optical networks). Txij li thaum peb muaj cov chaw muab kev pabcuam sib txawv rau peb cov network fiber ntau thiab cov qauv sib txawv, peb xav tau ib lub cuab yeej hloov pauv ntawm ib lub network mus rau lwm qhov. Qhov no yog qhov twg WDM optical amplifier repeater tsev neeg (OEO) los ua si.
Cov teeb liab rov tsim dua tshiab tsis tau siv hauvOEOua ntej. Thaum pib, OEO tsuas yog siv los hloov lub wavelength ntawm lub teeb liab tawm sab nraud rau hauv lub wavelength haum rau WDM system. Cov txheej txheem hloov dua siab tshiab no kuj tau siv los tswj cov zaus thiab ua kom lub zog ntawm cov teeb liab, ua rau lawv sib haum nrog EDFA hauv DWDM systems. Raws li qhov nruab nrab OEO hloov zuj zus los ntawm 1R mus rau 3R, qhov nyuaj ntawm nws cov teeb liab regeneration Cheebtsam nce.
Lub npe hu ua 3R yog rov ua kom nrov dua, rov ua dua thiab rov ua dua.
1R: Re-amplification Lub 1R tsis 'tseem' lub teeb liab, tab sis tsuas yog siv lub teeb liab sab nraud thiab hloov mus rau hauv lub teeb liab analogue. Cov txheej txheem no tsis quav ntsej txog kev ncaj ncees ntawm lub teeb liab. Raws li qhov tshwm sim, yog tias lub teeb liab tawm qhov muag yog "rubbish signal", ces nws cov analogue version kuj yuav yog "rubbish signal". Tsis tas li ntawd, qhov tseeb kis tau tus mob nyob deb ntawm DWDM system yog txwv los ntawm qhov tseeb tias qhov kev ncua deb ntawm nws tus kheej tuaj yeem ua rau muaj teeb meem qis.
2R: Reshaping thiab re-amplification Ua ntej lub teeb liab tawm tswv yim sab nraud yog rov ua kom nrov dua, nws yog thawj zaug txheeb tawm. Lub sijhawm no, qhov zoo ntawm lub teeb liab raug saib xyuas.
3R: rov ua kom nrov dua, rov ua dua lub sijhawm thiab rov ua dua Nws yog qib siab dua li 1R thiab 2R tshuab. Lub teeb liab zoo tuaj yeem saib xyuas ntau dua thiab meej vim yog cov ntaub ntawv zoo hauv cov teeb liab. Cov ntaub ntawv zoo no qhia rau lub cev ntawm kev noj qab haus huv thiab txo qis ntawm lub teeb liab. 3R tshuab muaj peev xwm saib xyuas ob txoj kev sib txuas lus.
WDM optical amplification repeater tsev neeg (OEO) ua lub luag haujlwm tseem ceeb hauv WDM systems, tshwj xeeb tshaj yog nyob rau hauv DWDM systems, qhov twg OEO txuas ntxiv kev sib kis ntawm lub network los ntawm kev hloov cov wavelengths (1310 txog 1550) thiab amplifying optical zog nrog sib npaug amplification, lub sij hawm rho tawm. thiab lees paub ntawm regenerative (3R) optical signals. OEO nrog kev hloov kho qhov muag (OEO) feem ntau yog siv ua ke nrog optical multiplexers hauv davhlau ya nyob twg multiplexers. OEO yog dav siv rau kev sib kis mus ntev ntawm ntau lub cev. Qhov zoo ntawm OEO yog nws qhov me me, kev nyab xeeb kev lag luam thiab kev teeb tsa yooj yim, uas yog vim li cas nws thiaj li siv rau hauv ntau daim ntawv thov kev sib kis.
Txoj cai ntawm kev ua haujlwm
Qhov tseem ceeb tshaj feature ntawmOEOyog muaj peev xwm tau txais, nthuav thiab rov xa cov teeb liab ntawm cov wavelengths sib txawv yam tsis hloov cov ntaub ntawv / cov ntsiab lus teeb liab. Niaj hnub no, wavelength hloov dua siab tshiab tsuas yog ua tiav los ntawm OEO, uas ua haujlwm zoo li lub tshuab hluav taws xob, hloov cov teeb liab kho qhov muag rau hauv lub teeb liab hluav taws xob, tsim cov ntawv luam ntawm cov teeb liab tawm tswv yim los ntawm kev siv hluav taws xob tshiab amplitude thiab waveform, thiab siv cov teeb liab hluav taws xob no los tsav lub transmitter los tsim cov teeb liab optical nrog lub wavelength tshiab.
HTF' OEO daim npav tuaj yeem txhawb nqa ntau yam kev sib kis tus nqi: 400G, 200G, 100G, 40G, 25G, 10G, thiab lwm yam.
