Mu rwego rwitumanaho, guhuza amakuru hagati yikigo, no gutwara amashusho, fibre optique cabling irakenewe cyane. Ariko, ikigaragara ni uko fibre optique cabling itakiri amahitamo yubukungu cyangwa bishoboka gushyira mubikorwa buri serivisi kugiti cye. Gukoresha rero umurongo wa Wavelength Multiplexing (WDM) kugirango wagure ubushobozi bwa fibre kubikorwa remezo bihari nibyiza cyane. WDM ni tekinoroji igwiza ibimenyetso byinshi bya optique kuri fibre imwe ukoresheje uburebure butandukanye bwurumuri rwa laser. Ubushakashatsi bwihuse bwimirima ya WDM buzashyirwa kuri CWDM na DWDM. Bashingiye ku gitekerezo kimwe cyo gukoresha uburebure bwinshi bwumucyo kuri fibre imwe. Ariko bombi bafite ibyiza byabo no kwerekana.
CWDM ni iki?
CWDM ishyigikira imiyoboro igera kuri 18 yoherejwe binyuze muri fibre icyarimwe. Kugirango ubigereho, uburebure butandukanye bwa buri muyoboro ni 20nm zitandukanye. DWDM, ishyigikira imiyoboro igera kuri 80 icyarimwe icyarimwe, hamwe na buri muyoboro 0.8nm gusa. Ikoranabuhanga rya CWDM ritanga igisubizo cyoroshye kandi gikoresha neza intera ngufi ya kilometero 70. Intera iri hagati ya kilometero 40 na 70, CWDM ikunda kugarukira kumiyoboro umunani.
Sisitemu ya CWDM isanzwe ishyigikira uburebure bwumunani kuri fibre kandi igenewe itumanaho rigufi, ukoresheje imirongo yagutse hamwe nuburebure bwakwirakwiriye kure.
Kubera ko CWDM ishingiye kumuyoboro wa 20-nm kuva kuri 1470 kugeza kuri 1610 nm, mubisanzwe ikoreshwa kuri fibre ya kilometero 80 cyangwa munsi yayo kuko ibyuma byongera imbaraga ntibishobora gukoreshwa numuyoboro munini. Umwanya mugari wimiyoboro yemerera gukoresha optique igiciro cyiza. Nyamara, ubushobozi bwibihuza kimwe nintera ishyigikiwe ni bike hamwe na CWDM kuruta na DWDM.
Mubisanzwe, CWDM ikoreshwa mugiciro gito, ubushobozi buke (sub-10G) hamwe nintera ngufi ikoreshwa aho ikiguzi ari ikintu cyingenzi.
Vuba aha, ibiciro byombi bya CWDM na DWDM byahindutse bigereranijwe. Uburebure bwa CWDM kuri ubu burashobora gutwara kugeza kuri 10 Gigabit Ethernet na 16G Fibre Fibre, kandi ntibishoboka rwose ko ubwo bushobozi bwakomeza kwiyongera mugihe kizaza.
DWDM ni iki?
Bitandukanye na CWDM, DWDM ihuza irashobora kwongerwa kandi rero, irashobora gukoreshwa mugutanga amakuru kure cyane.
Muri sisitemu ya DWDM, umubare wimiyoboro ihuriweho ni mwinshi kuruta CWDM kuko DWDM ikoresha intera ndende yumurambararo kugirango ihuze imiyoboro myinshi kuri fibre imwe.
Aho kugira ngo umuyoboro wa nm 20 ukoreshwa muri CWDM (uhwanye na miliyoni 15 GHz), sisitemu ya DWDM ikoresha imiyoboro inyuranye itandukanye kuva kuri 12.5 GHz kugeza 200 GHz muri C-Band ndetse rimwe na rimwe L-band.
Sisitemu ya DWDM uyumunsi isanzwe ishyigikira imiyoboro 96 iri kuri 0.8 nm itandukanye muri 1550 nm C-Band. Kubera iyo mpamvu, sisitemu ya DWDM irashobora kohereza amakuru menshi binyuze mumurongo umwe wa fibre kuko yemerera ubundi burebure bwinshi bwo gupakira kuri fibre imwe.
DWDM nibyiza kubitumanaho birebire bigera kuri kilometero 120 no kurenga bitewe nubushobozi bwayo bwo gukoresha amplificateur optique, ishobora kwongerera imbaraga imbaraga zose hamwe 1550 nm cyangwa C-band ya spran ikunze gukoreshwa mubisabwa na DWDM. Ibi biratsinda umwanya muremure wo kwiyegereza cyangwa intera kandi iyo byongerewe imbaraga na Erbium Doped-Fibre Amplifiers (EDFAs), sisitemu ya DWDM ifite ubushobozi bwo gutwara amakuru menshi murwego rurerure rugera kuri kilometero amagana cyangwa ibihumbi.
Usibye ubushobozi bwo gushyigikira umubare munini wumurambararo kurenza CWDM, urubuga rwa DWDM narwo rushobora gukora protocole yihuta kuko abadandaza ibikoresho byo gutwara abantu benshi optique muri iki gihe bakunze gushyigikira 100G cyangwa 200G kumuraba wizuba mugihe ikoranabuhanga rigenda ryemerera 400G no kurenga.
DWDM vs CWDM uburebure bwumurongo:
CWDM ifite umuyoboro mugari kuruta DWDM - itandukaniro ryizina mumirongo cyangwa uburebure bwumurongo hagati yimiyoboro ibiri yegeranye.
SystemsCWDM mubisanzwe itwara umunani wumurambararo ufite umuyoboro uri hagati ya 20 nm muri gride ya sprifike kuva 1470 nm kugeza 1610 nm.
Sisitemu ya DWDM, kurundi ruhande, irashobora gutwara 40, 80, 96 cyangwa kugeza kuri 160 yumurambararo ukoresheje intera ndende 0.8 / 0.4 nm (100 GHz / 50 GHz). Uburebure bwa DWDM mubusanzwe kuva kuri 1525 nm kugeza kuri 1565 nm (C-band), hamwe na sisitemu zimwe na zimwe zishobora gukoresha uburebure bwumuraba kuva 1570 nm kugeza 1610 nm (L-band).
Ibyiza bya CWDM:
1. Igiciro gito
CWDM ihendutse cyane kuruta DWDM kubera ibiciro byibyuma. Sisitemu ya CWDM ikoresha lazeri ikonje ihendutse cyane kuruta DWDM idakonje. Mubyongeyeho, Igiciro cya transvers ya DWDM mubusanzwe ihenze inshuro enye cyangwa eshanu kurenza iy'amasomo yabo ya CWDM. Ndetse ibiciro byo gukora bya DWDM birenze CWDM. CWDM rero ni amahitamo meza kubafite aho bagarukira mu nkunga.
2. Ibisabwa imbaraga
Ugereranije na CWDM, ingufu zisabwa kuri DWDM ziri hejuru cyane. Nka lazeri ya DWDM hamwe na monitor hamwe no kugenzura imiyoboro ikoresha hafi 4 W kuri buri muhengeri. Hagati aho, transmitter ya CWDM idakonje ikoresha hafi 0.5 W yingufu. CWDM ni tekinoroji ya pasiporo idakoresha ingufu z'amashanyarazi. Ifite ingaruka nziza zamafaranga kubakoresha interineti.
3. Gukora byoroshye
Sisitemu ya CWDM ikoresha tekinoroji yoroshye kubijyanye na DWDM. Ikoresha LED cyangwa Laser kububasha. Akayunguruzo ka sisitemu ya CWDM ni nto kandi ihendutse. Biroroshye rero gushyirwaho no gukoreshwa.
Ibyiza bya DWDM:
1. Kuzamura ibintu byoroshye
DWDM iroroshye kandi ikomeye kubijyanye nubwoko bwa fibre. DWDM kuzamura imiyoboro 16 ni byiza kuri fibre zombi za G.652 na G.652.C. Ubusanzwe uhereye kuberako DWDM ihora ikoresha akarere gake gacika fibre. Mugihe imiyoboro 16 ya CWDM ikubiyemo kwanduza mukarere ka 1300-1400nm, aho attenuation iri hejuru cyane.
2. Ubunini
Ibisubizo bya DWDM byemerera kuzamura intambwe zumunani kugeza kuri 40 ntarengwa. Bemerera ubushobozi bwuzuye hejuru ya fibre kuruta igisubizo cya CWDM.
3. Intera ndende
DWDM ikoresha umurongo wa 1550 wumurongo ushobora kwongerwaho ukoresheje amplificateur optique isanzwe (EDFA). Itezimbere intera yohereza ibirometero amagana.
Ishusho ikurikira iraguha ishusho yerekana itandukaniro riri hagati ya CWDM na DWDM.
Igihe cyo kohereza: Jun-14-2022