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    Ke li-network tsa optical tse sebetsang (AON) le passive (PON) life?

    Nako ea poso: Jul-28-2020

    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 ha li-routers, li-switching aggregator, lisebelisoa tse sebetsang tsa optical le lisebelisoa tse ling tse fetohang lipakeng tsa lisebelisoa tse bohareng tsa ofisi le likarolo tsa kabo ea basebelisi nakong ea phetiso 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).

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    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 na le mahlakore a mabeli.Ka tataiso e ka tlaase, litšebeletso tse ngata tse kang IP data, lentsoe, le video li ajoa ke OLT e teng ofising e bohareng ka mokhoa oa ho phatlalatsa ka 1: N passive optical splitter ho ODN Ho lihlopha tsohle tsa ONU ho PON;ka lehlakoreng le ka holimo, tlhahisoleseding e ngata ea litšebeletso ho tloha ho ONU ka 'ngoe e kopantsoe le fiber e tšoanang ea optical ka 1: N passive optical combiner ho ODN ntle le ho kena-kenana le e mong,' me qetellong e rometsoe ho OLT ofising e bohareng bakeng sa qetello ea kamohelo.

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    Sebaka sa marang-rang sa "passive optical network" se kenyelletsa "Optical Line terminal" (OLT) e kentsoeng setsing sa taolo ea bohareng, le sehlopha sa li-unit tsa marang-rang tse tšoanang (ONUs) tse kentsoeng sebakeng sa mosebelisi.The optical distribution network (ODN) pakeng tsa OLT le ONU e na le li-optical fibers 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.



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