OADM vs ROADM: Dab tsi yog qhov txawv?
Dhau ob peb xyoos dhau los, kev siv qhov yoj faib multiplexing (WDM) los ua kom paub ntau dua bandwidth ntawm ib hom fiber ntau (SMF) ua nrov heev. Kom ua kom tiav qhov kev xav tau ntawm qhov kev hloov ntawm cov qhab-nees thiab kev ua haujlwm zoo, qhov kho qhov muag ntxiv / poob multiplexer (OADM) tau muab coj los piv rau ntau yam thiab muaj kev sib txawv ntawm lub teeb rau hauv lossis tawm ntawm ib hom fiber ntau. Cov tshuaj OADM siv cov chaw ruaj ruaj / cov lim dej ruaj ruaj rau cov wavelengths taag, tab sis tam sim no nws tsis tuaj yeem ua raws li kev siv bandwidth, yog li tsav tsheb rov tshwm sim ntawm kev txhim kho rau OADM - ROADM. Yog li dab tsi qhov txawv ntawm OADM thiab ROADM? Thiab zoo li cas ntawm ROADM dua OADM taag?
OADM Yog Dab Tsi?
OADM yog ib qho cuab yeej siv hauv WDM tes hauj lwm uas muaj ntau lub teeb ntawm lub teeb uas sib kis tau los ntawm ib tus tib neeg muaj fiber ntau ntxiv kom tag nrho cov ntsiab lus ntawm qhov sib tw ntawm ob qho. Nws tau tsim los ntxiv / poob ib lossis ntau CWDM / DWDM raws rau ob peb fibers. Li no, qhov kho qhov muag ntxiv / lee multiplexer tau muab faib ua CWDM OADM thiab DWDM OADM raws li nws daim ntawv teev npe. Feem ntau, OADM yog muab xa nrog CWDM lossis DWDM MUX / DEMUX. Ua ke nrog MUX / DEMUX, tus nqi siv nyiaj 3-qhov chaw taw tes-rau-point optical kis tau tus mob yuav tsum tiav.
Yog li cas OADM ua tes taw tes rau point-to-point tes hauj lwm? Ntawm tus account tias OADM tuaj yeem ua qhov sib nrug ntawm cov xim ntau cov xim thiab tshem tawm cov xim tshwj xeeb kom poob los ntawm los ntxiv rau hauv lub ntsiab teeb liab. Qhov kev ua no tso cai rau nruab nrab ntawm cov chaw nruab nrab ntawm cov chaw qee qhov chaw nce nkag mus rau qhov chaw ntawm qhov taw tes rau ntawm qhov chaw txuas rau lawv. Tshwj xeeb, yog tias muaj ntau qhov xim rau ntau lub xim raug xa tawm ntawm ob qho chaw A thiab C (raws li qhia hauv daim duab nram qab no), thiab tus neeg xa khoom xav kom txuas mus rau ib qhov chaw nyob hauv B ntawm (nyob nruab nrab ntawm A thiab C). Tus OADM tuaj yeem muab tso rau hauv B kom tawg tawm tau cov xim. Cov xim tawg tawm no yuav poob rau ntawm qhov chaw B, txuas nrog cov cuab yeej ntawm qhov chaw, thiab ntxiv rov qab rau hauv kev sau (tam sim no nrog cov ntaub ntawv ntawm B) mus txuas rau A thiab / lossis C. Vim li ntawd, OADM tau ua tiav nws txoj hauj lwm. Yog xav paub ntau ntxiv txog OADM, thov hu rau OADM (Optical Add-Drop Multiplexer) Nyeem.
ROADM yog dab tsi?
ROADM, luv luv rau reconfigurable optical ntxiv / xa multiplexer, yog ib tug programable version of OADM. Nws ntxiv kev muaj peev xwm los hloov lub tsheb khiav ntawm cov kabmob nruab nrab-faib multiplexing nyob rau hauv lub wavelength txheej. Qhov no yog ua tiav los ntawm kev siv ntawm lub pliaj xaiv (WSS) cov khoom hauv lub cuab yeej. Nrog ib lub ROADM, tus neeg siv yuav tuaj yeem xa ib lo lus txib rau qhov kho vajtse thiab qhia nws kom hloov xim dab tsi ntxiv los yog nqes ntawm txhua qhov chaw. Los ntawm kev sib txuas ntau cov teeb meem kho vajtse ua ke, ROADMs tuaj yeem txuas ntau qhov chaw yooj yim heev thiab tsim tau ib lub network uas yooj yim hloov raws li kev cai hloov network.
Qhov tseeb, ROADMs tau hloov los ntawm peb lub cim tiam. Niaj hnub no, ROADM lag luam yog nyob rau hauv nruab nrab ntawm kev hloov mus rau plaub lub cim ntawm ROADM subsystems yam ntxwv los ntawm kev qhia txog plaub kev ua haujlwm tshiab: tsis muaj xim, tsis muaj teeb meem, tsis muaj kev txwv thiab flex spectrum. Nws tshua pom tias cov cuab yeej tshiab yuav coj peb cov txiaj ntsig ntau ntxiv. Yog xav paub ntxiv txog cov cim ntxiv mus ROADM, thov saib cov ntaub ntawv no: Tom ntej-Generation ROADM Architectures & Benefits.
Cov Kev Zoo ntawm ROADM li Tsau OADM yog dab tsi?
Raws li ROADM pub rau kev sib txuas lus ntawm chaw taws teeb thiab kev kho, nws muaj ntau yam zoo dua OADM tsau. Qhov kev pabcuam ntawm ROADM cov cuab yeej pabcuam yog los txhim kho qhov kev ua haujlwm ntawm WDM system ntawm cov khoom siv ntawm lub sijhawm tshuav ntawm tib lub sijhawm. Muaj ntau qhov zoo ntawm ROADM tshaj OADM tsau:
(1) Simplify Thauj Network Tsim
Hauv ROADM systems, lub teeb liab hloov tsis xav kho qhov muag-tau-hluav taws xob thiab hluav taws xob-los-kho qhov muag xws li tas OADM. Kev npaj ntawm tag nrho cov kev hloov bandwidth tsis tas yuav tsum tau nqa tawm thaum thawj zaug xa tawm ntawm lub cev. Nws muab kev ywj pheej ntawm kev xa txhua lub wavelength mus rau txhua qhov ntawm thoob plaws hauv lub nplhaib pob zeb.
(2) Sai Cuam Tshuam Kab Mob Tshiab Tshiab
Taag OADM ua qhov teeb meem muaj peev xwm, tab sis nws tsis yoog rau kev xav tau kev pabcuam bandwidth. Ntawm qhov tsis sib xws, ROADM-based networks yog tsim nyog thaum qhov kev thov yog tsis muaj kev txhawj xeeb, loj hlob, lossis xav tias yuav tsum tau tsiv mus tas li.
(3) Ncua Wavelength Thauj
ROADM-based tes hauj lwm muaj peev xwm ua kom muaj kev kho qhov muag tau zoo dua qub nrog dynamic txuas ntau dua, kev ywj siab ntaiv ntxiv ntiv taw, chaw qiv deb bandwidth uas tau kho kom muaj zog.
(4) Cov Kev Tawm Sij Lawm Tshaj Tawm
ROADM tso cai rau wavelength ntxiv / dauv ntawm qhov taw tes rau ntawm qhov kev taw qhia kom ua zoo dua, tsis yog qhov tsim nyog ntxiv rau cov kws kho mob nruab rau kev ntxiv / poob lasers / cov ntxaij lim dej rau hauv cov WDM system, thiab sib npaug zog ntawm cov kauj ruam ntawm wavelengths kom lawv tuaj yeem ua lag luam nyob rau tib lub fib.
(5) Zoo dua nyob rau hauv Service Network hloov dua siab tshiab
Nws automates tus txheej txheem kho qhov muag kom tshem tawm qhov kev pab cuam yuam kev, thiab sib npaug ntawm cov teeb liab uas hla tag nrho cov wavelengths, txo cov khoom siv hluav taws xob boosting khoom. Yog li nws yuav txo tau cov nqi ntawm tes hauj lwm.
(6) txo cov OPEX & CAPEX
ROADM tuaj yeem txo qee lub sijhawm thiab kev ua haujlwm nrog rau phau ntawv pov thawj uas yuav tsum muaj rau cov chaw OADM tas.
Xaus
Los ntawm OADM thiab ROADM, peb pom tau hais tias OADM plays ib feem ntawm WDM tes hauj lwm, vim hais tias nws qhib lub sijhawm rau cov tsim khoom tsim kom muaj ntau yam, agile, yooj yim ntawm kev kho qhov muag tsheb. Tsom nqi los ntawm kev txuag nyiaj thiab kev yooj yim, lub cim tshiab ROADM yog tam sim no nqa cov txiaj ntsig ntau ntxiv rau cov neeg siv thiab nyob rau qhov kev sib tw ua qhov chaw nyob hauv WDM tes hauj lwm thoob plaws ntiaj teb.
