OLT yog lub davhlau ya nyob twg kho qhov muag, ONU yog qhov chaw kho qhov muag (ONU), lawv yog cov khoom siv kho qhov muag sib txuas.Nws yog ob qhov tsim nyog modules hauv PON: PON (Passive Optical Network: passive optical network).PON (passive optical network) yog hais txog (optical distribution network) tsis muaj cov khoom siv hluav taws xob thiab hluav taws xob hluav taws xob, ODN yog tsim los ntawm cov khoom siv tsis zoo xws li optical splitter (Splitter), tsis tas yuav siv cov khoom siv hluav taws xob kim.Lub network passive optical network suav nrog cov kab hluav taws xob kho qhov muag (OLT) tau teeb tsa ntawm qhov chaw tswj hwm hauv nruab nrab, thiab ib pawg ntawm kev txhawb nqa kho qhov muag network (ONUs) ntsia ntawm tus neeg siv qhov chaw.Optical distribution network (ODN) ntawm OLT thiab ONU muaj cov fibers optical thiab passive splitters lossis couplers.
Routers thiab keyboards yog cov khoom sib pauv ntaub ntawv.
ODN (Optical Distribution Network) yog FTTH optical cable network raws li cov khoom siv PON.Nws lub luag haujlwm yog los muab kev sib txuas lus kho qhov muag ntawm OLT thiab ONU.Los ntawm qhov ua tau zoo ntawm kev pom, ODN tuaj yeem muab faib ua plaub ntu: feeder optical cable subsystem, tis optical cable subsystem, sab hauv cable optical cable subsystem thiab optical fiber davhlau ya nyob twg subsystem los ntawm qhov chaw ua haujlwm kawg mus rau tus neeg siv kawg.
ONT yog ib feem tseem ceeb ntawm ONU.
FTTB "optical fiber ntau rau lub tsev", 16 ONUs tau muab tso rau hauv lub thawv tsev hauv txoj kev hauv tsev.Muaj 16 ONTs hauv ONU.Txhua ONT tso tawm ib lub network cable (hluav taws xob teeb liab) thiab ncav cuag txhua tus neeg siv kawg ntawm lub network cable hauv txoj kev hauv tsev.
FTTH "fiber-rau-lub-tsev", muab 1 mus rau 16 splitter nyob rau hauv lub thawv chav tsev nyob rau hauv txoj kev hauv tsev, thiab tom qab ntawd mus txog txhua tus neeg siv los ntawm cov fiber ntau npog hauv txoj kev hauv tsev, thiab txhua tus neeg siv txiav ONT.Nws yog sib npaug rau dismantling ONU, kom cov khoom siv davhlau ya nyob twg yog infinitely ze rau tus neeg siv.
ONT tuaj yeem nkag siab tias yog ONU nrog ib qho chaw nres nkoj xwb.