Iindaba - iWaveband yefiber optical

Unxibelelwano lwefiber optical luthatha ukukhanya njengomphathi wolwazi ukunxibelelana.Inokudluliselwa nge-fiber core.Nangona kunjalo, asiyiyo yonke imisebe yokukhanya efanelekileyo kunxibelelwano.Ilahleko yothumelo iyahluka ngokwahlukeneyo ngamaza okukhanya.Ukufezekisa ilahleko encinci kunye nokusebenza ngokufanelekileyo, izazinzulu zihlala zikhangela ukukhanya okufanelekileyo.

850nm iWaveband

Ekuqaleni kwee-1980, izazinzulu zaqala ukuphonononga itekhnoloji yonxibelelwano lwefiber optical ngendlela esebenzayo.Iimowudi ezininzi zefiber yeyona nto babefunda ngayo.Ngamacores amakhulu efiber, i-muti-mode fiber iyakwazi ukubona ukuhanjiswa kwefayibha enye kwizibane ze-muti-mode.I-850nm yobude bokukhanya yayilelona lisetyenziswa kuqala.

O Waveband

Ekuqaleni kweminyaka yee-1990, ifayibha yendlela enye yaqala ukusetyenziswa ngokubanzi.

Umfanekiso woku-1

Iingcali zenzululwazi ziye zafumanisa ukuba ukukhanya kwe-waveband ye-1260nm ~ 1360nm kunokufezekisa ukuchithwa kwesignali encinci kunye nokulahleka kokudluliselwa okubangelwa ukusabalalisa ngokusebenzisa iimvavanyo.Ngoko ke, babiza ezi zibane ze-waveband njenge-O-band kunye ne-"O" imele "i-Original".Ngezilingo kunye nephutha, izazinzulu zifumene ukuba ukukhanya kunye ne-1260nm ~ 1625nm kwakhona kwindawo encinci yelahleko kwaye yeyona ndawo ifanelekileyo yokuhanjiswa kwefayibha.

I-1260nm ~ 1625nm i-waveband yokukhanya yahlulwe yaba yi-waveband ye-O ezintlanu, i-waveband ye-E, i-waveband ye-S, i-waveband ye-C kunye ne-L waveband.

Umfanekiso wesi-2

Izazinzulu zikwafumene ubudlelwane phakathi kwelahleko yosulelo kunye nobude bamaza.Ibonisa ngolu hlobo lulandelayo.

Umfanekiso wesi-3

Eyona bhendi isetyenziswayo yiC waveband((1530nm~1565nm), emele "eqhelekileyo".Ibhendi ye-C inokufezekisa ilahleko encinci yokuhambisa esetyenziswa ngokubanzi kwi-MAN, umgama omde, umgama omde, i-submarine optical cable systems kunye ne-WDM system.

L Waveband (1565nm ~ 1625nm)

L imele "ubude bezaba elide".I-waveband ye-L inokufezekisa ilahleko yesibini encinci yokuhanjiswa kwaye ikwayenye yokhetho oluphambili kumashishini.Ukuba i-waveband ye-C ayikwazi ukuhlangabezana neemfuno ze-bandwidth, Abantu bahlala bethatha i-waveband ye-L njengento ehambelanayo.

S Waveband (1460nm ~ 1530nm)

U-S umele "ubude obufutshane".Xa kuziwa ekulahlekeni kwefayibha, iphezulu kune-O waveband.Ngokuqhelekileyo isetyenziselwa ukuya kumaza asezantsi e-PON.

E Waveband

Yeyona bhendi iqhelekileyo phakathi kweentlobo ezintlanu zamaza amaza.U-E umele "ukwandiswa".Njengoko kubonisiwe kumfanekiso 3, i-bulge ingabonwa kwi-E waveband.Kungenxa yokuba yafunxwa yi-OH- ekhokelela kwilahleko enkulu yosulelo, ekwabizwa ngokuba yincopho yamanzi.

Emva kwimihla yakudala, ngenxa yobuchwephesha obunyiniweyo, amanzi ayexutywe kwigilasi yefiber optical eyakhokelela kwilahleko enkulu yosulelo kwi-E waveband kwaye yayingakwazi ukusebenza ngokuqhelekileyo.Emva koko, abantu baphuhlisa itekhnoloji yokuphelelwa ngamanzi emzimbeni ekwenzeni iglasi, ukusukela ngoko, ilahleko yosulelo kwi-E waveband yayingaphantsi nakwi-O waveband.Nangona kunjalo, ilahleko yosulelo lwenzeke kwi-E waveband kwintambo yefiber optical ebekwe ngaphambi kokuba ichazwe kusekho imida ye-E waveband esetyenziswa kunxibelelwano lwefiber optical.