Cov txheej txheem kev nthuav dav ntawm DWDM
1 Siab dua tus nqi channel
Cov channel tso ntawm DWDM system tau loj hlob los ntawm 2.5 Gbit / s mus rau 10 Gbit / s tam sim no, thiab lub kaw lus raws li 40 Gbit / s tau nkag mus rau theem ua lag luam.
2 Ntau dua nthoo sib nrug
Cov DWDM thaum ntxov feem ntau siv rau 8/16/32 wavelengths nrog channel qhov ntev ntawm 100 GHz thiab kev khiav hauj lwm wavelengths hauv C-band. Nrog cov thev naus laus zis txuas ntxiv ntawm kev siv thev naus laus zis, kev ua haujlwm ntawm lub nthwv cua ntawm DWDM system tuaj yeem npog C thiab L pawg nrog ib kab nrug 50 GHz. Piv txwv li, ZTE' s ZXWM M900 ntaus ntawv tuaj yeem muab tau txog li ntawm 160 lub zog loj ntawm kev ua ntau yam.
3 Tshaj ntxiv ntev ntev rau txhua qhov-kis tau tus mob kis nrug
Los ntawm nce qhov kev deb ntawm txhua qhov-kis tau tus mob thiab txo tus naj npawb ntawm cov hluav taws xob txuas ntxiv hluav taws xob, kev pib nqi thiab kev ua haujlwm ntawm kev tsim kho lub network tau txo.
Cov tshuab DWDM ib txwm siv EDFA txuas ntxiv qhov sib kis tau ntawm cov tsis hloov mus txuas. Tam sim no, faib Raman amplifiers, super rau pem hauv ntej kev txhim kho (FEC), kev tswj kev faib tawm, cov tswv yim sib txig sib luag, thiab cov kev hloov kho hom tau muaj. Nws tau nthuav tawm tam sim no los ntawm 600km rau ntau tshaj 2000km.
4 From taw tes rau taw tes WDM rau txhua qhov kho qhov muag network
Theordinarypoint-rau-pointDWDMsystemismainlycomposedofanopticalterminalmultiplexer (OTM) .Althoughithasahugetransmissioncapacity, itonlyprovidestheoriginaltransmissionbandwidthandthenetworkingcapabilityisnotflexible.Withthecontinuousdevelopmentoftheelectricalcross-oversystemandthecontinuousexpansionofthenodecapacity, thepoint-rau-pointnetworkingobviouslycannotkeepupwiththegrowthrateofthenetworktransmissionlinkcapacity.Thedesireforfurtherexpansionisshiftingtoopticalnodes, namelyopticaladd / dropmultiplexers (OADMs) andopticalcross-txuas (OXCs).
Chain hom thiab lub nplhaib hom kho qhov muag tau tsim los ntawm OADM. OADM ntaus ntawv tswj cov cim kho qhov muag ntawm cov sib txawv yoj yob sib kis tau xa mus rau qhov chaw tsim nyog, thiab tuaj yeem paub txog kev tiv thaiv thiab rov ua haujlwm ntawm cov txheej txheem kho qhov muag.
OXC yog tiam tom ntej ntawm kev sib txuas lus kho qhov muag mus los. Cov haujlwm tseem ceeb hauv txhua qhov kev sib txuas ntawm lub network muaj xws li: muab kev sib txuas ntawm yoj yoj, yoj sib yoj sib dhos, sib dhos ntawm txoj kev kho qhov muag, thiab kev tu lub nthwv dej kom thiaj li ua tiav qhov kev siv ntau tshaj ntawm cov khoom siv hluav taws xob hauv cov txheej txheem yoj yoj, yoj yoj, thiab Kev Tiv Thaiv thiab rov qab los ntawm fiber ntau. Lub OXC muab tso rau ntawm qhov chaw sib txuas tseem ceeb hauv lub network, sau cov lus tawm tswv yim los ntawm cov txheej txheem sib txawv ntawm txhua tog, thiab tom qab ntawd tso tawm txhua lub teeb liab ntawm lub nthwv dej haum. Ntiv nplhaib sib xyaw ntau tuaj yeem tsim los ntawm OADM thiab OXC.
Hauv IP tiam txuas ntxiv DWDM telecom / network architecture, OXC cia siab kom hloov cov khoom siv hluav taws xob / hloov pauv tam sim no nrog rau cov cim xa hluav taws xob.
5 Kev loj hlob ntawm IP dhau ntawm DWDM thev naus laus zis
Kev bandwidth ntawm Is Taws Nem Cov caj qaum hauv Internet tau loj hlob sai heev. Yog hais tias DWDM thev naus laus zis tsis siv, tsuas yog cov ntaub ntawv khiav tsheb ntawm Is Taws Nem tuaj yeem nyob hauv qhov muaj peev xwm ntawm tag nrho ib nthwv kab ke fiber ntau (tam sim no, qhov siab tshaj qhov sib kis ntawm kev lag luam ib leeg-wavelength fiber ntau yog 40 Gbit / s). Yog li, IP hla DWDM yuav yog cov thev naus laus zis tseem ceeb rau kev siv network tom ntej
Optico Kev Sib Txuas Lus muab tag nrho cov txheej txheem ntawm DWDM rau qhov siab ua haujlwm ruaj khov thiab kev ntseeg tau thiab txhua tus ntawm peb lub koomhaum tuaj yeem hla siab thiab tsis kub hauv 2000 teev.
Txais tos rau inqure- Koj tus khub ntseeg siab ntawm DWDM!www.fiberopticom.com
