GPON ubuchwepheshe - khathizwe entsha ezokuxhumana

I GPON-ubuchwepheshe okwamanje lamadolobha esimanjemanje kakhulu, esebenza kahle futhi phambili emndenini sasivumela ezibanzi yokwenziwa amanethiwekhi fiber-optic. Kususelwa wamanje eminyakeni yamuva, yaseYurophu, inikeza ikhebula ithelevishini opharetha kanye service Internet izixazululo ngempumelelo emkhakheni ukufinyelela ngesivinini World Wide Web, I-isignali ozinzile futhi i izinga ezehlukile izithombe ithelevishini. GPON-ubuchwepheshe futhi inikeza Ukonga okukhulu kakhulu fibre optical isihlahla yomphindwa inethiwekhi izakhiwo, kanye enokwethenjelwa ibangelwa izakhi yokwenziwa ekhelini. Kodwa mhlawumbe inzuzo enkulu emisha ezokuxhumana kuyinto ngesivinini "imayela lokugcina".

GPON-ubuchwepheshe isekela inqubo yesimanje ye wavelength division multiplexing, okuvumela ukuba ukwandisa umthamo okuqukethwe enethiwekhini ngaphandle ukuthuthukisa ingqalasizinda yabo ikhebula. Umuthi yomphindwa inikeza amathuba amahle kakhulu ukuphathwa nezimo Komkhawulokudonsa iklayenti amasevisi. Ngesikhathi GPON ubuchwepheshe obufanayo has a sezingeni eliphezulu idatha izinga enikeza obala kwezokuthuthi ezihlukahlukene services: SDH, i-Ethernet, i-ATM, njll

Ngakho, izinzuzo eziningi ka yokwenziwa amanethiwekhi fiber-optic futhi eziningi izici ezivelele zinqunywa izinzuzo lobu buchwepheshe phezu kwezinye architectures ezokuxhumana, ikakhulukazi ngokuphathelene ngesivinini "imayela lokugcina". Lokhu kungenxa ekusakazekeni ngokushesha emisha ekwakhiweni ngesivinini fiber-optic idolobha Multiservice amanethiwekhi. Uyini GPON-ubuchwepheshe, futhi yini empeleni yayo?

Lodwa, ilula, njengazo zonke ekhaliphile. Emaphakathi umhlinzeki node, ukuhlinzeka ngesivinini backbone uxhumano amaphuzu exhunywe kwi-yokwenziwa optical zokubhalisa inethiwekhi ye izakhiwo esihlahleni. Lokhu kwakha ISIZINDA ekhethekile Lesisemkhatsini ezisingatha icwecwe splitters yokwenziwa (splitters) uhlobo optical. passivity elisho ukuthi ngokuphelele okudingeka ukudla noma isevisi cha.

I GPON-imishini, splitters, kuhlanganisa multi-service hardware kanye platform isofthiwe esiteshini futhi umsebenzisi ezikhumulweni. Futhi platform eyodwa bangadlulisela Imininingwane isibalo esingangaleso amadivayisi zokubhalisa, okuyinto ikuvumela ukuba ixhume amandla isabelomali nesivinini transceiver hardware. Isiqalo nesigcino imishini yesimanje ikuvumela ukuba ngokushesha futhi engabizi akusebenzise yokwenziwa inethiwekhi fiber-optic futhi uthuthukise izakhiwo ikhebula.

Kuyini ezithakazelisayo wukuthi yokwenziwa optical fibre amanethiwekhi akuzona kokusungulwa samanje nosuku izinhlelo. Ukuthuthukiswa lobu buchwepheshe ukudluliswa waqala Eighties, ekujuleni British Telecom labs. Eminyakeni embalwa kamuva zezilingo test wokuqala Kwakuseshwa ngemuva kokuqala ukuthuthukisa, wakhe ubuhanjelwe eziningi ithelevishini European owaziwa. Esikhathini esizayo, lobu buchwepheshe isidlulile izigaba eziningi ngcono kanye sesimanje. Inethiwekhi lokuqala yokwenziwa yalolu hlobo ibe umthamo 155 Mbit / s. Nokho, ngaleso sikhathi leli kwakwanele. Futhi manje nje, ngenxa wathuthuka ngokushesha Internet kanye TV digital, ubuchwepheshe is wazibonakalisa udume ngempela.