Izindaba - I-Waveband ye-fiber optical

Ukuxhumana kwe-fiber optical kuthatha ukukhanya njengesiphathi solwazi ukuxhumana.Ingadluliselwa nge-fiber core.Nokho, akuwona wonke umsebe wokukhanya ofanele ukuxhumana.Ukulahlekelwa kokudluliswa kuyahlukahluka nge-waveband ehlukene yokukhanya.Ukuze kuzuzwe ukulahlekelwa okuncane nokusebenza ngempumelelo, ososayensi bahlale befuna ukukhanya okufanele kakhulu.

I-Waveband engu-850nm

Ekuqaleni kwawo-1980, ososayensi baqala ukuhlola ubuchwepheshe bokuxhumana nge-fiber optical ngendlela engokoqobo.I-Multi-mode fiber yiyona nto ikakhulukazi abafunda ngayo.Ngama-fiber cores amakhudlwana, i-muti-mode fiber iyakwazi ukubona ukudluliswa kwefayibha eyodwa kwezibani zemodi ye-muti.Ukukhanya kwe-wavelength okungu-850nm yikhona okwasetshenziswa kuqala.

O Waveband

Ekuqaleni kwawo-1990, i-fiber yemodi eyodwa yaqala ukusetshenziswa kabanzi.

Umfanekiso 1

Ososayensi bathole ukuthi ukukhanya kwe-waveband engu-1260nm~1360nm kungafinyelela ukuhlanekezelwa kwesignali okuncane nokulahlekelwa kokudlulisela okubangelwa ukuhlakazeka ngokuhlolwa.Ngakho-ke, baqambe lokhu kukhanya kwe-waveband ngokuthi O-band futhi “O” imele “Okoqobo”.Ngokuhlolwa namaphutha, ososayensi bathola ukuthi ukukhanya okuno-1260nm~1625nm nakho kusendaweni yokulahlekelwa okuncane futhi kuwukukhanya okulungele kakhulu ukudluliswa kwefayibha.

I-1260nm~1625nm ye-waveband ukukhanya ihlukaniswe yaba i-waveband ye-five-O, i-E waveband, i-S waveband, i-waveband engu-C ne-L waveband.

Umfanekiso 2

Ososayensi baphinde bathola ubudlelwano phakathi kokulahleka kokudlulisela kanye nobude begagasi.Ikhombisa kanje.

Umfanekiso 3

Ibhendi esetshenziswa kakhulu i-C waveband (((1530nm~1565nm), emele “okujwayelekile”.Ibhendi ye-C ingafinyelela ukulahlekelwa okuncane kokudlulisela okusetshenziswa kabanzi ku-MAN, ibanga elide, ibanga elide kakhulu, amasistimu wekhebula optical ngwenya kanye nohlelo lwe-WDM.

I-L Waveband (1565nm~1625nm)

U-L umele “ubude begagasi elide”.I-L waveband ingafinyelela ukulahleka kokudluliswa okuncane kwesibili futhi ingenye yezinketho eziyinhloko ezimbonini.Uma i-C waveband ingakwazi ukuhlangabezana nezidingo zomkhawulokudonsa, Abantu ngokuvamile bazothatha i-L waveband njengokuhambisanayo.

I-S Waveband (1460nm~1530nm)

U-S umele "ubude bezansi obufushane".Uma kukhulunywa ngokulahleka kwefayibha, iphakeme kune-O waveband.Ngokuvamile isetshenziswa kubude begagasi obuhlayo be-PON.

E Waveband

I-waveband engavamile kakhulu phakathi kwezinhlobo ezinhlanu zamagagasi.U-E umele "okunwetshiwe".Njengoba kubonisiwe kumfanekiso 3, iqhubu lingabonakala ku-E waveband.Lokho kungenxa yokuthi imuncwe yi-OH- okuholela ekulahlekeni okukhulu kokudluliselwa, okubuye kubizwe ngenani eliphakeme lamanzi.

Emuva ezinsukwini zakudala, ngenxa yobuchwepheshe obulinganiselwe, amanzi axutshwa engilazini ye-fiber optical eyaholela ekulahlekelweni okukhulu kokudluliselwa ku-E waveband futhi ayikwazanga ukusebenza ngendlela evamile.Ngemuva kwalokho, abantu bathuthukisa ubuchwepheshe bokukhipha amanzi emzimbeni ekwenzeni ingilazi, kusukela ngaleso sikhathi, ukulahleka kokudluliselwa ku-E waveband kwakungaphansi kakhulu kune-O waveband.Kodwa-ke, ukulahleka kokudlulisela kwenzeke ku-E waveband kuntambo yefiber optical ebekwe ngaphambi kwalokho kwachaza ukuthi kusenemikhawulo ye-E waveband esetshenziswa ekuxhumaneni kwe-fiber optical.