Inethiwekhi yokufinyelela optical inethiwekhi yokufinyelela esebenzisa ukukhanya njengendlela yokudlulisa, eshintsha izintambo zethusi, futhi isetshenziselwa ukufinyelela ikhaya ngalinye. Inethiwekhi yokufinyelela ebonakalayo ngokuvamile iqukethe izingxenye ezintathu: itheminali yomugqa obonakalayoOLT, iyunithi yenethiwekhi yokubonaI-ONU, kanye nenethiwekhi yokusabalalisa ebonakalayo i-ODN, lapho izingxenye eziyinhloko ze-OLTfuthiI-ONUinethiwekhi yokufinyelela ebonakalayo.
YiniOLT?
Igama eliphelele leOLTi-Optical Line Terminal, itheminali yomugqa wokubona.OLTiyitheminali ye-optical line, futhi iyimishini yehhovisi emaphakathi yezokuxhumana. Isetshenziselwa ukuxhuma iziqu ze-fiber optical. Isebenza njenge-ashintsha or umzilakunethiwekhi yokuxhumana yendabuko. Kuyidivayisi yokungena yenethiwekhi yangaphandle kanye nokungena nokuphuma kwenethiwekhi yangaphakathi. Ibekwe ehhovisi elimaphakathi, imisebenzi ebaluleke kakhulu yokwenza ukuhlela kwethrafikhi, ukulawulwa kwebhafa, kanye nokuhlinzeka ngoxhumano lwenethiwekhi ye-passive optical egxile kumsebenzisi kanye nokwaba umkhawulokudonsa. Ngamagama alula, isebenzisa imisebenzi emibili: ekhuphuka nomfula, iqedela ukufinyelela phezulu kwenethiwekhi ye-PON; futhi phansi komfula, ithumela idatha etholiwe kubo bonkeI-ONUokokusebenza kwetheminali yomsebenzisi ngenethiwekhi ye-ODN.
YiniI-ONU?
I-ONUIyunithi ye-Optical Network. II-ONUinemisebenzi emibili: Khetha ngokukhetha ukusakaza okuthunyelwa yi-OLT, bese uthola impendulo ku-OLTuma idatha idinga ukwamukelwa; qoqa futhi ulondoloze idatha ye-Ethernet okudingeka umsebenzisi ayithumele, futhi ayithumele ku-OLTngokwewindi lokuthumela elabelwe Thumela idatha egcinwe kunqolobane.
Izindlela zokusatshalaliswa zeAma-ONUkumanethiwekhi ahlukene e-FTTx nawo ahlukile. Isibonelo, i-FTTC (I-Fiber To The Curb):I-ONUibekwe egunjini lamakhompyutha omphakathi; I-FTTB (I-Fiber Iya Esakhiweni):I-ONUibekwe ebhokisini lokuhlangana lephaseji; I-FTTH (I-Fiber Iya Ekhaya):I-ONUibekwe kubasebenzisi basekhaya.
Yini i-ONT?
I-ONT i-Optical Network Terminal, iyunithi yokugcina kakhulu ye-FTTH, evame ukubizwa ngokuthi “ikati elibonayo”, elifana ne-xDSL electric cat. I-ONT iyitheminali yenethiwekhi yokubona futhi isetshenziselwa abasebenzisi bokugcina.I-ONUibhekisela kuyunithi yenethiwekhi yokubona. Kungase kube namanye amanethiwekhi phakathi kwayo nomsebenzisi wokugcina. I-ONT iyingxenye ebalulekile yeI-ONU.
Buyini ubuhlobo phakathiI-ONUfuthiOLT?
IOLTyisiphetho sokuphatha, kanye neI-ONUiyitheminali; iI-ONUukuhlinzekwa kwezinsiza kulethwa nge-OLT, futhi bobabili basebudlelwaneni benkosi nesigqila. OkuningiAma-ONUingalengiswa nge-splitter ngaphansi kwe-OLT.
Iyini i-ODN?
I-ODN i-Optical Distribution Network, okuyisiteshi esiphathekayo sokudluliswa kwe-optical phakathiOLTfuthiI-ONU. Umsebenzi oyinhloko ukuqedela ukudluliswa kwe-bidirectional kwamasignali optical. Ngokuvamile lezi zixhunywa izintambo ze-fiber optic, izixhumi ezibonakalayo, izihlukanisi ezibonakalayo, nokufakwa. Izinto ezisekelayo zedivayisi zakhiwe ngama-splitter optical.
