Txawm hais tias DWDM thev naus laus zis txhim kho kev sib kis tau zoo tshaj plaws ntawm cov xov tooj hluav taws xob fiber ntau, nws tsis muaj peev xwm txaus rau cov teeb liab ua lag luam hauv kev kho qhov muag thiab kev ua lag luam, thiab tsis tuaj yeem ua tau raws li cov kev cai siab ntawm kev siv cov ntaub ntawv dav dav. Raws li qhov khoom tsim kho ntawm DWDM thev naus laus zis, OTN muaj ntau yam ntawm cov neeg yuav khoom teeb liab ntim thiab kis tau pob tshab, loj qhov loj bandwidth rov siv dua, yooj ywm hla thiab teeb tsa lub sijhawm, muaj peev xwm sab saum toj thiab saib xyuas kev tswj muaj peev xwm, thiab txhim kho kev sib tham thiab kev tiv thaiv kev muaj peev xwm. OTN cov cuab yeej maj mam hloov cov khoom DWDM nrog nws cov txiaj ntsig zoo.
OTN (Optical Thauj Network) yog lwm cov cim txuas yav dhau los Thauj Network raws wavelength faib multiplexing (WDM) thev naus laus zis. Hauv cov thev naus laus zis no, OTN hloov qhov ntxiv tau los pab ua kom cov txheej txheem ua kom yooj yim los npaj cov kev sib txuas lus kev pab cuam, nthuav dav, txhawb thiab nce cov neeg siv cov ntaub ntawv, thiab txhim kho kev lag luam muaj peev xwm ntawm kev sib txuas lus network, thiaj li daws teeb meem ntawm kev ua tsis tau zoo wavelength / sub-wavelength muaj peev xwm ua tau, lub peev xwm siv cov network tsis muaj zog thiab kev tiv thaiv muaj peev xwm tiv thaiv lub zog WDM network ib txwm muaj.
OTN muaj tag nrho cov qauv thav duab, nws tus kheej lub sijhawm yoj hluav taws tuaj yeem ua tiav los ntawm cov thev naus laus zis ua hluav taws xob hla kev ua haujlwm, xws li SDH, cov khoom me me ntawm lub teeb liab kis tau tuaj yeem koom nrog hauv cov channel loj, ib qho channel OTN hauv kuj muaj ntau lub thawv me me, zoo li SDH OTN los ntawm kab ke yuav muaj peev xwm nkag tau thiab ua haujlwm, txhim kho kev siv kom tau txais txiaj ntsig bandwidth. OTN thev naus laus zis tseem tuaj yeem saib xyuas kev ua haujlwm, txhaum thiab lwm yam teebmeem ntawm kev tsim kho tshiab ntawm kev sib txuas lus network. Nyob rau hauv tus txheej txheem ntawm kev ua haujlwm txhaum tshawb pom, OTN lub tshuab ua haujlwm zoo dua.
OTN network feem ntau yog lub nplhaib network, network thiab lwm cov qauv hauv network, tuaj yeem muab kab 1 + 1 tiv thaiv, nthwv dej 1 + 1 tiv thaiv, tus neeg sab 1 + 1 tiv thaiv, ODUk tiv thaiv, txheej kho qhov muag thiab hluav taws xob txheej tiv thaiv, thiab lwm yam.
Hauv OTN, cov ntaub ntawv teeb tsa tuaj yeem siv rau kev sib txuas sib txuas (zoo ib yam li SDH lub lag luam kev teeb tsa), thiab ntau hom kev pabcuam tuaj yeem nkag mus rau tib lub sijhawm kom paub txog kev ua lag luam ntse. Nws tuaj yeem muab cov txheej txheem kho qhov muag yoj hluav taws xob qib, hluav taws xob txheej sub wavelength qib kev lag luam ua ke sib tw lub peev xwm, qhov muaj peev xwm kho qhov muag txheej.
OTN network tau txhim kho cov tshuaj zoo heev rau kev ua lag luam broadband loj loj. OTN lub chaw xaib tau ua tiav hauv cov caj qaum interprovincial, tuam txhab qaum pob txhaws thiab pab pawg txheej txheem nyob hauv nroog loj ntawm kev sib tham ua lag luam hauv tuam txhab ua lag luam kom muab cov sijhawm ua lag luam tshaj Gb / s.
OTN yog lub cim tshiab ntawm nthwv dej rau cov khoom lag luam xa khoom kho qhov muag. Tus kho kom zoo dua qub: txhawb nqa ntau lub thav duab thiab qhov kev tsim kho kom zoo dua qub lub peev xwm, txhawb nqa 10Gbit / s kev pabcuam kev txhim kho 100 / 200g ntsis / s kev pabcuam, txhawb 40-yoj / 80-yoj ua kom muaj peev xwm nce ntxiv, ib leeg fiber ntau qhov peev xwm ntawm 8T / 16T.
Qhov zoo ntawm OTN:
(1) Muab qhov sib xyaw ua ke muaj peev xwm ua ntu wavelength optical optical txheej thiab wavelength theem hluav taws xob txheej.
(2) Nws tuaj yeem paub txog qhov kev sib kis muaj peev xwm ntawm ultra-ntev nrug thiab ultra-ntev nrug, txhawb rau ntau qib cascade muaj nuj nqi ntawm hluav taws xob rov tsim dua tshiab, thiab cov kev sib txuas lus sib kis tau mus txog ntau txog kaum txhiab txhiab kis lus mev.
(3) 100G / 200G veneer ntawm OTN tuaj yeem muab kev hloov kho ntu ua haujlwm. Kev hloov lub nthwv dej tuaj yeem pom tau los ntawm qhov hloov kho nthwv dej wavelength, tuaj yeem hloov kho kom tsis pub dhau thaj tsam ntawm 96 nthwv dej nrog 50GHz ntu hauv C band. Kev siv lub tshuab wavelength kho tau kom tsis txhob muaj cov kev yoj ib txwm yoj sib faib hloov yoj yoj sib hloov, uas tuaj yeem yooj yim rau cov kev pabcuam qhib thiab paub txog qhov kev hloov tau yooj yim wavelength.
(4) Cov neeg siv tuaj yeem yoog lub network kom paub qhov kev hloov pauv ntawm 10G system mus rau 100G system. Hais txog kev sib xyaw cov phiaj xwm kev tsim qauv, ntxiv rau cov teeb meem sib xws xws li kev sib kis thiab qhov chaw sib kis ntawm ob yam ntawm tus nqi ntsuas, channel cuam tshuam los ntawm cov qauv sib txawv kuj tseem txiav txim siab kom nkag siab txog kev sib kis ntawm cov kab ke.
Nrog cov kev loj hlob tsis tu ncua ntawm cov ntaub ntawv theem thiab cov kev pabcuam bandwidth, OTN, ua cov khoom lag luam ntawm DWDM, tsim cov qub thiab sib koom ua ke ntawm qhov zoo ntawm SDH thiab WDM, thiab nthuav cov network muaj nuj nqi haum rau cov kev pabcuam kev sib kis. Nyob hauv daim ntawv thov hauv lub network, kev muaj peev xwm, kev muaj peev xwm ua lag luam, kev tswj hwm kev tswj hwm network tau zoo dua qub, tuaj yeem ua tau raws li cov kev xav tau ntawm kev ua lag luam tshiab. Nrog rau 5G era tuaj, daim ntawv thov ntawm OTN thev naus laus zis yuav nrov dua nyob rau hauv kev ua lag luam, uas yog kev sib tw tsis pom kev ntawm kev tsim kho network yav tom ntej.
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