Kodi AON ndi chiyani?
AON ndi intaneti yogwira ntchito, makamaka imagwiritsa ntchito zomangamanga za point-to-point (PTP), ndipo wogwiritsa ntchito aliyense akhoza kukhala ndi mzere wodzipatulira wa fiber.Active Optical network imatanthawuza kutumizidwa kwa ma routers, ma aggregators osinthira, zida zowoneka bwino ndi zida zina zosinthira pakati pa zida zapakati paofesi ndi magawo ogawa ogwiritsa ntchito panthawi yotumizira ma sign.Ma switchgears awa amayendetsedwa ndi magetsi kuti azitha kuyang'anira kugawa kwazizindikiro ndi ma sign owongolera kwa makasitomala enieni.Zida zamagetsi zogwira ntchito zimaphatikizapo kuwala (laser), optical receiver, optical transceiver module, optical amplifier (fiber amplifier ndi semiconductor optical amplifier).
Kodi PON ndi chiyani?
PON ndi Passive Optical Network, mawonekedwe a point-to-multipoint network, ndipo ndiukadaulo waukulu wa FTTB/FTTH.Passive optical network imatanthawuza ODN (optical distribution network) imangogwiritsa ntchito ulusi wamagetsi ndi zigawo zokhazikika, ndipo zimangofunika kugwiritsa ntchito zida zamoyo pagwero lazizindikiro ndi malekezero olandila.Mu dongosolo la PON, chowotcha chowotcha ndiye pachimake, ndipo chowotcha chamagetsi chimagwiritsidwa ntchito kupatukana ndi kusonkhanitsa zizindikiro za kuwala zomwe zimafalitsidwa kudzera pa intaneti.Izi zogawanitsa za PON ndizolowera pawiri.Kulowera pansi, mautumiki ambiri monga IP deta, mawu, ndi kanema amagawidwa ndi OLT yomwe ili mu ofesi yapakati mu njira yowulutsira kudzera mu 1: N passive optical splitter mu ODN Kumagulu onse a ONU pa PON;kumtunda kwamtunda, zambiri zautumiki kuchokera ku ONU iliyonse zimagwirizanitsidwa ndi ulusi womwewo wa kuwala kupyolera mu 1:N chophatikizira chopanda kuwala mu ODN popanda kusokoneza wina ndi mzake, ndipo potsirizira pake amatumizidwa ku OLT ku ofesi yapakati kuti alandire.
Network optical network imaphatikizapo optical line terminal (OLT) yomwe imayikidwa pamalo owongolera apakati, ndi gulu la ma matching optical network units (ONUs) omwe amayikidwa patsamba la ogwiritsa ntchito.The Optical distribution network (ODN) pakati pa OLT ndi ONU ili ndi ma optical fibers ndi passive splitters kapena couplers.PON imagawidwa m'magulu atatu aukadaulo: ATM-based APON (ATM PON), Efaneti-based EPON (Ethernet PON), ndi GPON (Gigabit PON) kutengera General Frame Protocol.
Mu intaneti ya AON, wogwiritsa ntchito ali ndi mzere wodzipatulira wa fiber optical, womwe umakhala wosavuta kukonzanso maukonde pambuyo pake, kukulitsa mphamvu, kukweza maukonde, ndi zina zotero.netiweki ya PON nthawi zambiri imakhala ndi zingwe za fiber optic mpaka ma kilomita 20.AON imatsogolera ma siginecha owoneka kudzera pazida zogwira ntchito, ndipo PON imagwiritsa ntchito zida zopanda magetsi, zomwe zimapangitsa kuti pakhale mtengo wokwera pakutumiza kwa netiweki ya AON kuposa PON.