OLTis optical line terminal,ONUis an optical network unit (ONU), ese ari optical transmission network yekubatanidza michina. Iwo ma module maviri anodiwa muPON: PON (Passive Optical Network: passive optical network). PON (passive optical network) inoreva (optical distribution network) haina chero zvigadzirwa zvemagetsi uye magetsi emagetsi, ODN inoumbwa nemidziyo yepasi senge optical splitter (Splitter), haidi inodhura inoshanda inoshanda zvemagetsi. A passive optical network inosanganisira optical line terminal (OLT) yakaiswa pachiteshi chepakati chekutonga, uye batch yekutsigira optical network unit (ONUs) yakaiswa panzvimbo yevashandisi. Iyo optical distribution network (ODN) pakati peOLTuyeONUine optical fibers uye passive splitters kana couplers.
Routersuyeswitchesmidziyo yekuchinjana data.
ODN (Optical Distribution Network) ndeye FTTH optical tambo network yakavakirwa paPON midziyo. Basa rayo nderekupa optical transmission chiteshi pakati peOLTuyeONU. Kubva pakuona kwekushanda, ODN inogona kukamurwa kuita zvikamu zvina: iyo feeder optical cable subsystem, yekugovera optical tambo subsystem, yemukati tambo optical tambo subsystem uye optical fiber terminal subsystem kubva kuhofisi kumagumo kusvika kumushandisi.
ONT chikamu chakakosha cheONU.
FTTB "optical fiber kune chivakwa", 16ONUsanoiswa muyuniti bhokisi mukoridho. Kune gumi nematanhatu ONTs muONU. Imwe neimwe ONT inoburitsa tambo yetiweki (chiratidzo chemagetsi) uye inosvika kumagumo emushandisi kuburikidza netiweki tambo mukoridho.
FTTH "fiber-to-the-home", isa 1 kusvika ku16 splitter muunit box mucorridor, wobva wasvika kune wese mushandisi kuburikidza nefiber yakavharwa mucorridor, uye mushandisi wega wega anogumisa ONT. Izvo zvakaenzana nekubvisa iyoONU, kuitira kuti zvigadziriso zvigadziriswe zvive pedyo nekusingaperi kune mushandisi.
ONT inogona kunzwisiswa seONUnechiteshi chimwe chete.