Naphezu kwentuthuko esheshayo engqalasizinda yenethiwekhi, imboni yezokuxhumana ibhekene nobunzima obukhulu bokukhula. Obunye bobuchwepheshe obuyinhloko kwezokuxhumana kwe-optical — i-Wavelength Division Multiplexing (WDM) — bube yisisombululo esiyinhloko sokunqoba lokhu kulinganiselwa okungokwenyama.

Uma i-optical fiber iqhathaniswa nomgwaqo omkhulu, ukuxhumana kwendabuko kwe-single wavelength kufana nemoto eyodwa ehlala wonke umgwaqo. Ubuchwepheshe be-WDM buhlukanisa le ndlela ebonakalayo ibe "imizila ebonakalayo" eminingi engaphazamisi (ama-wavelength ahlukene e-optical), okuvumela amasignali amaningi edatha ukuthi adluliselwe ngesikhathi esisodwa nge-fiber efanayo. Ihadiwe eyinhloko evumela lobu buchwepheshe yisihlungi se-DWDM (Dense Wavelength Division Multiplexing) esingasebenzi. Lesi sihloko sinikeza ukuhlaziywa okufushane kwalobu buchwepheshe.

I. Izimiso Eziyinhloko kanye Nezinzuzo Zezihlungi Ezingasebenzi

I-Passive DWDM, i-OSP Ring OADM, Isiteshi Esi-1, Isikhala Se-100 GHz, Isiteshi 48, I-900um 1m Fiber, Isixhumi se-SC/APC

Igama elithi “passive” lisho ukuthi idivayisi ayidingi ukunikezwa kwamandla kwangaphandle. Esikhundleni salokho, ithembele ngokuphelele ekumbozweni kwefilimu encane ebonakalayo noma ezakhiweni ze-grating ukuze ihlukanise ngokunembile (i-demultiplex) noma ihlanganise izimpawu ze-optical (eziningi) zamaza ahlukahlukene.

Lesi sici sokubona esibonakalayo kuphela sinikeza ukuzinza nokuthembeka okumangalisayo, okwenza idivayisi imelane kakhulu nokuphazamiseka kwe-electromagnetic. Ngenxa yalokho, ifaneleka kakhulu ukusebenza isikhathi eside emakamelweni emishini yokuxhumana eyinkimbinkimbi noma ezindaweni ezingaphandle ezinzima.

Ngaphakathi kwezakhiwo zenethiwekhi ye-optical, izihlungi ze-DWDM ezingasebenzi zisebenza “njengabalawuli bethrafikhi.” ​​Zilandela ngokuqinile amazinga e-International Telecommunication Union (ITU-T), zihlukanisa ifasitela lokudlulisa i-optical elinokulahlekelwa okuncane libe iziteshi eziningi noma ngisho namakhulu zokuxhumana ezizimele ezinesikhala esincane kakhulu sobude be-wavelength.

Lokhu kusho ukuthi i-fiber eyodwa ye-optical, ekuqaleni eyayikwazi ukuthwala isignali eyodwa kuphela, ingandisa ngokushesha amandla ayo okudlulisa izikhathi eziningi, ithuthukise kakhulu ukusebenza kahle kwe-spectral.

II. Izimo Ezijwayelekile Zokusebenza kanye Nenani

I-Passive DWDM, i-OSP Ring OADM, Isiteshi Esi-1, Isikhala Se-100 GHz, i-Ch52, I-Monitor (1%), i-900um 1m Fiber, Ngaphandle Kwesixhumi

Lezi zihlungi ezingasebenzi zivame ukuklanywa ngezakhiwo zokupakisha ezijwayelekile, njengemojula yekhasethi ye-LGX noma amakhadi e-rack-mount angu-19 intshi, futhi zihlonyiswe ngezixhumi ze-fiber optic ezinemba kakhulu ukuze zihlanganiswe kalula kumanethiwekhi e-fiber yemodi eyodwa akhona. Amanani azo abalulekile okusetshenziswa afaka:

Ukwandiswa Kwenethiwekhi Yokudlulisa I-Metropolitan kanye Nomgogodla

Ngaphandle kokwengeza izintambo ezintsha zefayibha ebonakalayo, ubuchwepheshe be-WDM bungakhulisa ngokushesha i-bandwidth yokudlulisa yamanethiwekhi endawo yedolobha kanye namanethiwekhi omgogodla wesifunda, kuhlangatshezwane nezidingo ezinkulu zokudluliselwa kwedatha zezinsizakalo ezifana nokusakaza ividiyo okunencazelo ephezulu kanye nokubala ngamafu.

Isitshalo Sangaphandle (OSP) kanye Nenethiwekhi Yokufinyelela

Ngenxa yezici zawo ezingasebenzi futhi ezingenakho ukulungiswa, lawa madivayisi asetshenziswa kabanzi kumanethiwekhi okusabalalisa ama-optical angaphandle, okunciphisa ngempumelelo izindleko zokusebenza nokugcinwa kwesikhathi eside kwabaqhubi bezokuxhumana.

Ukuxhumana Kwesikhungo Sedatha

Ngaphakathi kwezikhungo zedatha noma phakathi kwezikhungo zedatha eziningi, izihlungi ezingasebenzi zivumela ukuhanjiswa kwezimpawu eziningi ezibonakalayo okuphumelelayo kakhulu ngokulahlekelwa okuphansi kakhulu kokufakwa, okuqinisekisa ukudluliswa kwedatha okusheshayo nokuzinzile.