DWDM yog dab tsi?
DWDW yog luv rau ntom ntom nti faib ua ntau yam. Nws yog kho qhov muag multiplexing siv los ua kom muaj bandwidth dua cov network muaj fiber ntau. DWDM ua haujlwm los ntawm kev sib txuas thiab sib kis ntau cov cim qhia tib lub sijhawm ntawm cov txheej txheem sib txawv ntawm tib lub fiber ntau. Nws tau hloov kho txoj kev xa cov ntaub ntawv ntawm cov kev ncua ntev. DWDM tuaj yeem faib ua passive DWDM thiab nquag DWDM. Tshooj lus no yuav piav qhia tag nrho ob lub DWDM.
Muaj Sij Hawm DWDM
Passive DWDM lub nruab nrog tsis muaj kev ua haujlwm. Cov kab ua haujlwm tsuas yog vim cov nyiaj tau kho qhov muag ntawm cov hloov pauv tau siv. Tsis muaj cov cim hluav taws xob ua kom nrov dua thiab cov tshuab kom tawg tau siv. Cov tshuab hla DWDM muaj qhov tsim kev siab thiab muaj peev xwm nthuav dav, tab sis kev sib kis tau ntev tsuas yog txwv rau cov nyiaj siv kho qhov muag ntawm cov khoom siv sib kis. Daim ntawv thov tseem ceeb ntawm passive DWDM system yog metro network thiab cov xov tooj sib txuas lus nrawm nrog qhov muaj peev xwm siab channel.
Nquag DWDM
DWDM lub nruab nrog feem ntau hu ua transponder-based system. Lawv muab txoj hauv kev los thauj cov nqi ntau ntawm cov chaw hauv cov chaw hauv cov chaw khaws ntaub ntawv. Cov transponder yuav tawm qhov tshwm sim ntawm SAN lossis IP hloov hom, feem ntau nyob rau hauv ib ntus yoj 850nm lossis ntev yoj 1310nm hom, thiab hloov lawv los ntawm kev hloov kho qhov muag-hluav taws xob-kho qhov muag (OEO) DWDM hloov dua siab tshiab. Thaum tsim cov tes hauj lwm ntev ntawm DWDM, ob peb EDFA amplifiers tau raug tsim ua ntu zus ntawm txoj kab. Tus naj npawb ntawm cov amplifiers hauv ib ntu yog txwv thiab nyob ntawm hom kho qhov muag cable hom, tshooj channel, cov ntaub ntawv sib kis ntawm txhua channel, thiab tso cai OSNR tus nqi.
Lub sijhawm ntev ntawm cov kab thaum siv cov DWDM system tau txiav txim siab tsis yog los ntawm cov ntsia hluav taws xob ntxiv thiab cov nqi ntawm OSNR, tab sis kuj tseem cuam tshuam nrog kev cuam tshuam ntawm chromatic dispersion - qhov kev cuam tshuam ntawm cov teeb liab kis, ntawm cov paib kis. Ntawm cov qauv tsim theem ntawm DWDM network qhov project, tso cai muaj nuj nqis ntawm chromatic dispersion rau lub transceivers raug coj mus rau hauv tus account, thiab, yog tias tsim nyog, chromatic dispersion compensates modules (DCM) muaj nyob hauv kab. DCM qhia cov cwj pwm ntxiv rau hauv txoj kab, uas ua rau txo qis ntawm ntu qhov ntev ntawm cov lus.
Passive DWDM thiab DWDM Dhia Ua Si
Ob lub siab DWDM thiab DWDM nquag muaj lawv tus kheej qhov zoo thiab kev pom zoo.
Pros thiab Cons ntawm Pass DWDM
Kev txuag tus nqi: tsis zoo li cov kab ke nraub qaum nrog cov amplifiers thiab cov kev faib khoom tawg, passive DWDM tso cai rau kev npaj cov kev nrawm nrawm uas muaj cov peev txheej siab nrog cov kev siv nyiaj ntau.
Tsis tshua muaj: passive DWDM tsis yog ua txhua. Nws yog tiag tiag ntsaws thiab ua si, thiab tsis muaj ib yam dab tsi los tau.
Txawm hais tias passive DWDM muaj ob qhov txiaj ntsig tseem ceeb, nws tseem muaj qhov tsis zoo.
Kev ua kom sib luag: koj tau txwv rau cov xim dawb, thiab tsawg dua yoj lub thauj ntawm cov khoom siv fiber ntau. Raws li koj loj hlob, koj yuav tsum muaj cov cuab yeej ntau dhau. Txuas ntxiv, nrog cov khoom siv dag zog ntau dua, koj muaj kev nyuaj ntau los tswj hwm. Thiab koj yuav tsum tau pib tswj kev yob tib yam ntawm ntau cov khoom siv passive thiab lawv tuaj yeem ua haujlwm sib txawv nyob rau txhua yam nyob ntawm koj teeb tsa.
Kev tswj hwm: yog tias koj xav hloov lub yoj tes lossis qhov sib txuas rau ib qho laj thawj twg, koj txoj kev xaiv tsuas yog txwv tsis pub nws tawm ntawm kev pab cuam thiab cuam tshuam lub cev cabling raws li lub yoj yoj raug khi rau ntawm optic.
Pros thiab Cons ntawm DWDM Dhia Ua Si
DWDM lub zog muaj peev xwm haum ntab ntau dua rau hauv ib khub fiber ntau. Lub teeb liab sib txuas uas tau xa thoob ib zaug xwb fiber ntau khub tuaj yeem nqa ntau dua bandwidth dua li passive ntawm tib qhov loj me tuaj yeem ua. Nyeg, koj tsis tas yuav muaj fiber ntau lub cev ntawm koj ob qho chaw. Qhov no yog qhov zoo thaum qhov kev ncua deb yog teeb meem vim tias nws tso cai rau koj kom tau txais ntau dua ntawm cov roj fiber ntau khub raws li txwv tsis pub dhau.
Nquag teeb tsa ua rau koj tswj hwm koj lub network zoo. Koj tuaj yeem hloov kho dynamically rov suab dua yam tsis muaj kev sib txuas. Nws yog pob tshab rau txhua yam uas tab tom caij nthwv cua. Ntxiv mus, DWDM nquag tuaj yeem ua kom yooj yim dua rau kev teev raws li koj lub network nce. Koj tuaj yeem haum cov kab hluav taws xob ntxiv ntawm cov fiber.
Nquag DWDM muaj qhov tsis zoo, ib yam nkaus.
Kev Siv Nyiaj: qhov DWDM teeb tsa los siv tau kim heev yog muab piv rau Dive DWDM. Yog tias koj tsis xav tau qhov kev ncua deb, tsis txhob xaiv DWDM nquag.
Kev teeb tsa: nyob ntawm koj tus neeg muag khoom, kev teeb tsa yuav yog qhov kev ua txhaum loj, thiab yuav tsum muaj kev nkag siab zoo ntawm cov network kho qhov muag. Nws muaj ntau yam ntxiv hauv kev tsim vaj tse. DWDM tsim nyog yuav tsum tau hloov khoom siv thauj khoom, txuas ntxiv, tom qab muxing cov cim taw qhia, lawv feem ntau xav tau nquag ua kom nrov kom muaj kev nthuav dav. Yog tsis muaj no, koj tsuas mus ib ntus kev deb.
Ntsiab lus
Tsis muaj teeb meem passive DWDM lossis nquag DWDM, xaiv qhov uas zoo tshaj plaws rau koj lub network. Paub lawv tus kheej cov yam ntxwv tuaj yeem pab koj txiav txim siab zoo uas koj xav tau. DWDM mux / demux yog ib qho yuav tsum nyob rau hauv ob leeg dhau los DWDM thiab DWDM nquag. HTF muaj kev nthuav qhia DWDM mux / demux. Yog tias koj xav yuav DWDM mux / demux, HTFWDM.COM yog qhov chaw zoo. Txuas mus xyuas www.HTFWDM.com lossis tiv tauj peb ntawm kev muag khoom6@htfuture.com kom paub meej.
