Raws li lub tswvyim txheej txheem, WDM thev naus laus zis feem ntau muaj peb tus qauv sib txuam, uas yog wavelength division multiplexing ntawm 1310 nm thiab 1550 nm, CWDM thiab DWDM.
Yam ntxwv
(1) Ultra loj muaj peev xwm kis.
Kev xa khoom hauv qhov system tuaj yeem ncav cuag 300-400gbit / s lossis ntau dua.
(2) Txuag cov khoom siv fiber ntau kho qhov muag.
Rau WDM system, tsis muaj teeb meem ntau npaum li cas SDH cov kab ke muaj, tag nrho cov tshuab ua haujlwm sib txuam tsuas xav tau ib khub ntawm cov kho qhov muag.
(3) Cov kis pob tshab rau txhua cov channel, txhim kho du thiab nthuav.
Txhua channel ntau ntawm WDM system muaj kev ywj pheej ntawm ib leeg, yog li txhua channel yuav xa cov cim sib txawv kom pom tseeb.
(4) Siv EDFA kom paub txog qhov sib kis ntev ntev.
EDFA muaj qhov zoo ntawm qhov kev nce siab, dav bandwidth, suab nrov thiab lwm yam. Nrog rau qhov dav bandwidth EDFA, txhua qhov sib txuam ntawm cov kab ke kho qhov muag ntawm WDM system tuaj yeem ua kom nrov tau nyob rau tib lub sijhawm, thiaj li paub qhov ultra ntev kis ntawm cov kab ke, thiab zam kom tsis txhob muaj qhov xav tau ntawm lub qhov muag hluav taws xob hauv txhua qhov kho qhov muag. Qhov kev sib kis ntev ntev ntawm WDM system tuaj yeem ncav cuag ntau pua mais, tib lub sijhawm, nws tuaj yeem txuag ntau cov cuab yeej txuas thiab txo nqi.
(5) Txhim kho qhov kev ntseeg tau ntawm lub system.
(6) Txhua qhov kho qhov muag tau tsim tau.
Txhua lub network kho qhov muag yog kev taw qhia kev txhim kho ntawm optical fiber kis network yav tom ntej. WDM qhov system tuaj yeem sib xyaw nrog OADM thiab OXC los ua txhua lub kho qhov muag muaj qhov muaj qhov chaw siab, muaj kev ntseeg siab thiab siab tau txais txiaj ntsig kom tau raws li kev xav tau ntawm kev xa xov band kis.
Cov ntawv thov
Transmission DWDM xa khoom
Networks Cov phooj ywg hauv nroog thiab sib txuas ntev
Taw-rau-kis DWDM fiber ntau kev ua haujlwm
● Linear ntxiv / tso tseg DWDM fiber ntau
Ib puag ncig cov xwm txheej
CWDM
CWDM siv 1 200 ~ 1 700 nm qhov rai dav, uas yog siv rau hauv 1 550 nm system. Ntawm chav kawm, 1 310 nm wavelength faib multiplexer tseem nyob hauv kev tsim. Qhov kev ncua deb ntawm cov kab xaib uas nyob ib sab ntawm CWDM feem ntau ntau dua los yog sib npaug li 20 nm. Tus naj npawb ntawm wavelengths feem ntau yog 4 lossis 8 yoj, thiab qhov siab tshaj plaws yog 16 vuag. Thaum cov naj npawb ntawm cov xov tooj sib txuas yog 16 lossis tsawg dua, vim tias DFB laser siv hauv CWDM system tsis xav tau txias, tsis hais tus nqi, kev siv fais fab thiab cov khoom siv loj, CWDM system tau txais ntau dua thiab txais tos los ntawm kev lag luam. CWDM tsis tas yuav xaiv cov khoom ntom ntom ntaws ua cov tsis xws luag ntau dua thiab" cov qhov tso tawm suab" EDFA, tab sis tsuas yog siv pheej yig ntau cov channel laser transceiver raws li kev xa tawm, yog li tus nqi tsawg heev. Tam sim no, ntau lub chaw tsim khoom muaj peev xwm muab kev lag luam CWDM tshuab nrog 2-8 wavelengths, uas tsim nyog siv rau hauv cov nroog uas thaj chaw tsis muaj qhov tshwj xeeb loj thiab cov ntaub ntawv lag luam txhim kho tsis tau nrawm heev.
DWDM
DWDM tuaj yeem nqa 8-160 wavelengths. Nrog kev txhim kho txuas ntxiv ntawm DWDM thev naus laus zis, kev txwv sab sauv ntawm nws ib nrab nthwv dej tseem loj zuj zus, nrog lub sijhawm sib kis tsawg dua 1.6 nm. Nws yog tsuas yog siv nyob rau hauv kev sib kis ntev. Lub tshuab thev naus laus zis tau siv yuav tsum tau muaj nyob rau hauv txhua lub DWDM. Hauv 16 yoj DWDM system, siv cov khoom siv dispersion fiber ntau siv los them, thaum nyob hauv 40 yoj DWDM system, dispersion nqes hav them fiber ntau yuav tsum tau siv. DWDM tuaj yeem sib txuas thiab sib txawv ntawm cov yoj yob sib txawv hauv tib cov tib lub sijhawm. Txhawm rau kom ntseeg tau tias kis tau zoo, ib qho fiber ntau pauv mus rau ntau lub ntsej muag virtual. Nrog DWDM thev naus laus zis, ib qho fiber ntau tuaj yeem xa cov ntaub ntawv kom txaus raws li 400 Gbit / s. raws li cov tuam txhab tso tawm ntau txoj hauv kev rau txhua lub fiber, qhov kis tau tus mob ntawm terabits ib ob tsuas yog ze ntawm lub kaum. DWDM tuaj yeem sib txuas thiab sib txawv ntawm cov yoj yob ib txhij hauv tib lub fiber ntau. Txhawm rau kom ntseeg tau qhov ua tau zoo, ib qho fiber ntau yuav pauv mus rau ntau lub ntsej muag virtual. Yog li yog tias koj npaj yuav multiplex yim lub fiber kho qhov muag cov khoom lag luam (OCs), uas yog, kom xa yim lub cim hauv ib qho fiber ntau, qhov sib kis yuav nce ntxiv ntawm 2.5 GB / s txog 20 GB / s. Vim kev siv DWDM thev naus laus zis, ib qho fiber ntau tuaj yeem xa mus txog 40 Gb / s ntawm cov ntaub ntawv ntws. Raws li cov chaw tsim khoom ntxiv ntau txoj hauv kev rau txhua qhov fiber, kis tau ceev ntawm megabits ib ob tsuas yog ze ntawm lub kaum ntse ntse.
HTF cov khoom siv mas yog siv rau hauv cov pob txha caj qaum, cov tub ntxhais ua ke txheej, kev sib sau hauv nroog, txheej txheej thiab cov ntaub ntawv nruab nrab sib cuam tshuam, thiab lwm yam, kom ua tiav cov kev pabcuam ntau, muaj peev xwm loj, muaj lub pob tshab ua kom zoo, uas tuaj yeem ua tau raws li cov kev xav tau ntawm cov neeg ua haujlwm rau ultra loj muaj peev xwm thiab ultra ntev nrug kis, thiab muab lub platform ruaj khov rau cov neeg ua haujlwm' ntau qhov kev pabcuam ua haujlwm thiab txhim kho network yav tom ntej thiab nthuav dav.
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