Kwintsimi yonxibelelwano, uqhagamshelwano lweziko ledatha, kunye nothutho lwevidiyo, i-fiber optic cabling inqweneleka kakhulu. Nangona kunjalo, inyaniso yeyokuba i-fiber optic cabling ayiseyondlela yoqoqosho okanye enokwenzeka yokuzikhethela ukuyiphumeza kwinkonzo yomntu ngamnye. Ngaloo ndlela usebenzisa i-Wavelength Division Multiplexing (WDM) ekwandiseni umthamo wefiber kwisiseko sefayibha ekhoyo iyacetyiswa kakhulu. I-WDM yitekhnoloji ephindaphinda imiqondiso emininzi ye-optical kwifiber enye ngokusebenzisa ubude bamaza ohlukeneyo okukhanya kwelaser. Uphononongo olukhawulezayo lweenkalo ze-WDM luya kufakwa kwi-CWDM kunye ne-DWDM. Zisekwe kwingqikelelo efanayo yokusebenzisa ubude bamaza okukhanya kwifiber enye. Kodwa bobabini baneemfanelo zabo kunye nobubi babo.
Yintoni iCWDM?
I-CWDM ixhasa ukuya kuthi ga kwi-18 ye-wavelength channels ezithunyelwa ngefiber ngexesha elinye. Ukufezekisa oku, ubude bamaza ahlukeneyo betshaneli nganye buqelelene nge-20nm. I-DWDM, ixhasa ukuya kuthi ga kwi-80 itshaneli ze-wavelength ngaxeshanye, kunye netshaneli nganye kuphela ngaphandle kwe-0.8nm. Itekhnoloji yeCWDM ibonelela ngesisombululo esiluncedo nesiyongayo kumgama omfutshane ukuya kutsho kwiikhilomitha ezingama-70. Kumgama ophakathi kwama-40 kunye neekhilomitha ezingama-70, i-CWDM ithande ukulinganiselwa ekuxhaseni amajelo asibhozo.
Inkqubo ye-CWDM ngokuqhelekileyo ixhasa i-wavelengths ezisibhozo ngefayibha nganye kwaye yenzelwe unxibelelwano olufutshane, isebenzisa i-frikhwensi ebanzi kunye ne-wavelengths esasazeka kude.
Ekubeni i-CWDM isekelwe kwisithuba sesiteshi se-20-nm ukusuka kwi-1470 ukuya kwi-1610 nm, ngokuqhelekileyo isasazwe kwi-fiber spans ukuya kuma-80km okanye ngaphantsi ngenxa yokuba i-amplifiers ebonakalayo ayinakusetyenziswa kunye neziteshi ezinkulu zokubeka izithuba. Oku kugqagqana kubanzi kweetshaneli kuvumela ukusetyenziswa kwamehlo amaxabiso aphakathi. Nangona kunjalo, umthamo wamakhonkco kunye nomgama oxhaswayo ungaphantsi nge-CWDM kune-DWDM.
Ngokuqhelekileyo, i-CWDM isetyenziselwa iindleko eziphantsi, umthamo ophantsi (i-sub-10G) kunye nezicelo zomgama omfutshane apho iindleko ziyinto ebalulekileyo.
Kutshanje, amaxabiso awo omabini amacandelo e-CWDM kunye ne-DWDM aye athelekiseka ngokufanelekileyo. I-CWDM wavelengths okwangoku iyakwazi ukuthutha ukuya kwi-10 Gigabit Ethernet kunye ne-16G Fiber Channel, kwaye akunakwenzeka ukuba lo mthamo unyuke ngakumbi kwixesha elizayo.
Yintoni i-DWDM?
Ngokungafaniyo ne-CWDM, uqhagamshelo lwe-DWDM lunokwandiswa kwaye, ke ngoko, lunokusetyenziselwa ukuhambisa idatha imigama emide kakhulu.
Kwiinkqubo ze-DWDM, inani leetshaneli eziphindaphindwayo lixinene kakhulu kune-CWDM kuba i-DWDM isebenzisa isithuba sobude obuqinileyo ukuze ifake amajelo amaninzi kwifiber enye.
Esikhundleni se-20 nm isithuba sesiteshi esisetyenziswa kwi-CWDM (elingana malunga ne-15 yezigidi ze-GHz), iinkqubo ze-DWDM zisebenzisa iintlobo ezahlukeneyo zezithuba ezichaziweyo ukusuka kwi-12.5 GHz ukuya kwi-200 GHz kwi-C-Band kwaye ngamanye amaxesha i-L-band.
Iinkqubo zanamhlanje ze-DWDM ngokuqhelekileyo zixhasa iziteshi ze-96 ezibekwe kwi-0.8 nm ngaphandle kwe-1550 nm C-Band spectrum. Ngenxa yoku, iinkqubo ze-DWDM zinokusasaza ubuninzi bedatha ngekhonkco enye yefayibha njengoko zivumela amaza amaza amaninzi ukuba apakishwe kwifayibha enye.
I-DWDM iyona nto ifanelekileyo kunxibelelwano olude olufikelela kwi-120 km nangaphezulu ngenxa yokukwazi ukunyusa i-amplifiers optical, enokuthi ibe neendleko-ukukhulisa yonke i-1550 nm okanye i-C-band spectrum esetyenziswa ngokuqhelekileyo kwizicelo ze-DWDM. Oku koyisa izithuba ezide zokuthomalalisa okanye umgama kwaye xa kunyuswe yi-Erbium Doped-Fiber Amplifiers (EDFAs), iinkqubo ze-DWDM zinamandla okuthwala amanani aphezulu edatha kwimigama emide efikelela kumakhulu okanye amawaka eekhilomitha.
Ukongeza kwisakhono sokuxhasa inani elikhulu lamaza amaza kune-CWDM, iiplatifomu ze-DWDM nazo ziyakwazi ukuphatha iiprothokholi zesantya esiphezulu njengoko uninzi lwabathengisi bezixhobo zothutho lwe-optical namhlanje baxhasa ngokuqhelekileyo i-100G okanye i-200G nge-wavelength ngelixa ubugcisa obuvelayo buvumela i-400G nangaphezulu.
I-DWDM vs i-CWDM ye-wavelength spectrum:
I-CWDM inesithuba setshaneli esibanzi kune-DWDM -- umahluko oqhelekileyo wokuphindaphinda okanye ubude be-wavelength phakathi kwamajelo okukhanya amabini akufuphi.
Iisistim zeCWDM ngokuqhelekileyo zithutha ubude bobude obusibhozo kunye nesithuba somjelo wama-20 nm kwigridi ye-spectrum ukusuka kwi-1470 nm ukuya kwi-1610 nm.
Iinkqubo ze-DWDM, kwelinye icala, zinokuthwala i-40, 80, 96 okanye ukuya kwi-160 wavelengths ngokusebenzisa isithuba esincinci kakhulu se-0.8 / 0.4 nm (100 GHz / 50 GHz grid). I-DWDM wavelengths ngokuqhelekileyo ukusuka kwi-1525 nm ukuya kwi-1565 nm (C-band), kunye nezinye iinkqubo ezikwaziyo ukusebenzisa ubude be-wavelengths ukusuka kwi-1570 nm ukuya kwi-1610 nm (L-band).
Izinto eziluncedo zeCWDM:
1. Iindleko eziphantsi
I-CWDM inexabiso eliphantsi kakhulu kune-DWDM ngenxa yeendleko zehardware. Inkqubo yeCWDM isebenzisa iilaser ezipholileyo ezinexabiso eliphantsi kune-DWDM lasers ezingapholiyo. Ukongeza, Ixabiso le-transceivers DWDM lidla ngokuphindwe kane okanye ezintlanu zibiza ngaphezu kweemodyuli zabo zeCWDM. Kwaneendleko zokusebenza ze-DWDM ziphezulu kuneCWDM. Ke i-CWDM lolona khetho lufanelekileyo kwabo banomda kwinkxaso-mali.
2. Imfuneko yamandla
Xa kuthelekiswa neCWDM, iimfuno zamandla ze-DWDM ziphezulu kakhulu. Njengoko iilaser ze-DWDM kunye ne-monitor ehambelanayo kunye nolawulo lokujikeleza kudla malunga ne-4 W ngobude bobude. Okwangoku, i-CWDM i-laser transmitter engapholisiyo isebenzisa malunga ne-0.5 W yamandla. I-CWDM bubugcisa obungasebenzisi mandla ombane. Ineempembelelo ezintle zemali kubasebenzisi be-intanethi.
3. Easy Operation
Iinkqubo zeCWDM zisebenzisa iteknoloji elula ngokubhekiselele kwi-DWDM. Isebenzisa i-LED okanye iLaser yamandla. Izihluzi zamaza eenkqubo zeCWDM zincinci kwaye zitshiphu. Ngoko ke kulula ukufakwa kunye nokusetyenziswa.
I-DWDM eluncedo:
1. Uphuculo oluguquguqukayo
I-DWDM iguquguquka kwaye yomelele ngokubhekiselele kwiintlobo zefiber. Ukuphuculwa kwe-DWDM kwiitshaneli ze-16 zisebenza kuzo zombini i-G.652 kunye ne-G.652.C fibers. Ekuqaleni ukusuka kwinto yokuba i-DWDM ihlala isebenzisa ummandla welahleko ephantsi yefiber. Ngelixa iinkqubo ze-16 ze-CWDM ze-channel zibandakanya ukuhanjiswa kwingingqi ye-1300-1400nm, apho ukuthotywa kuphezulu ngokuphawulekayo.
2. Ukubaleka
Izisombululo ze-DWDM zivumela ukuphuculwa kwamanyathelo amatshaneli asibhozo ukuya kubuninzi beziteshi ze-40. Bavumela umthamo opheleleyo ophezulu kakhulu kwifiber kunesisombululo seCWDM.
3. Umgama woThutho olude
I-DWDM isebenzisa i-1550 ye-wavelength band enokwandiswa kusetyenziswa i-additional optical amplifiers (EDFA's). Yongeza umgama wothumelo ukuya kumakhulu eekhilomitha.
Lo mfanekiso ulandelayo uya kukunika umbono obonakalayo wokungafani phakathi kwe-CWDM kunye ne-DWDM.
Ixesha lokuposa: Jun-14-2022