AON ke eng?
AON ke marang-rang a sebetsang a optical, haholo-holo a amohela mohaho oa marang-rang oa ntlha-to-point (PTP), 'me mosebedisi e mong le e mong a ka ba le mohala o inehetseng oa optical fiber. Active optical network e bolela ho tsamaisoa hali-routers, li-switching aggregator, lisebelisoa tse sebetsang tsa optical le lisebelisoa tse ling tsa ho fetola pakeng tsa lisebelisoa tsa ofisi e bohareng le likarolo tsa ho aba basebelisi nakong ea phetisetso ea matšoao. Li-switchgears tsena li tsamaisoa ke motlakase ho laola kabo ea matšoao le matšoao a tataiso bakeng sa bareki ba itseng. Thepa e sebetsang ea optical e kenyelletsa mohloli o khanyang (laser), mochine oa optical, optical transceiver module, optical amplifier (fiber amplifier le semiconductor optical amplifier).
PON ke eng?
PON ke Passive Optical Network, sebopeho sa marang-rang sa ntlha-to-multipoint, 'me ke theknoloji e ka sehloohong bakeng sa FTTB/FTTH. Passive optical network e bua ka ODN (optical distribution network) e sebelisa feela likhoele tsa optical le likaroloana tse sa sebetseng, 'me e hloka feela ho sebelisa lisebelisoa tse phelang mohloling oa lets'oao le pheletso ea ho amohela mats'oao. Ka mokhoa o tloaelehileng oa PON, optical splitter ke motheo, 'me optical splitter e sebelisetsoa ho arola le ho bokella lipontšo tsa optical tse fetisitsoeng ka marang-rang. Li-splitter tsena tsa PON li ka lehlakoreng le leng. Ka lehlakoreng le ka tlaase, litšebeletso tse ngata tse kang IP data, lentsoe, le video li ajoa keOLTe fumaneha ofising e bohareng ka mokhoa oa khaso ka 1:N passive optical splitter ho ODN Ho bohle.ONUdiyuniti ho PON; ho ea holimo, ho na le lintlha tse ngata tsa litšebeletso tse tsoang ho e 'ngoe le e 'ngoeONUe kopantsoe le fiber e tšoanang ea optical ka 1: N passive optical combiner ho ODN ntle le ho kena-kenana, 'me qetellong e romeloa hoOLTofising e bohareng bakeng sa ho amohela baeti.
A passive optical network e kenyelletsa terminal ea optical line (OLT) e kentsoeng seteisheneng sa taolo e bohareng, le sehlopha sa li-unit tsa marang-rang tse tšoanang (Li-ONU) e kentsoeng sebakeng sa mosebelisi. The optical distribution network (ODN) pakeng tsaOLTle eaONUe na le likhoele tsa optical le li-splitter tse sa sebetseng kapa li-couplers. PON e arotsoe ka litekanyetso tse tharo tsa tekheniki: APON e thehiloeng ho ATM (ATM PON), EPON e thehiloeng ho Ethernet (Ethernet PON), le GPON (Gigabit PON) e thehiloeng ho General Frame Protocol.
Mocheng oa marang-rang oa AON, mosebedisi o na le mohala o inehetseng oa optical fiber, e leng bonolo bakeng sa tlhokomelo ea morao-rao ea marang-rang, ho atolosoa ha matla, ho ntlafatsa marang-rang, joalo-joalo Ho phaella moo, marang-rang a AON a akaretsa mefuta e mengata ea lik'hilomithara tse ka bang 100; marang-rang a PON hangata a lekanyelitsoe ho likhoele tsa fiber optic ho fihla ho lik'hilomithara tse 20. AON haholo-holo e tataisa lipontšo tsa optical ka lisebelisoa tse sebetsang, 'me PON e sebelisa lisebelisoa tse sa sebetseng ntle le motlakase, e leng se hlahisang litšenyehelo tse phahameng bakeng sa ho tsamaisoa ha marang-rang ho AON ho feta PON.