PON (Passive Optical Network) is a passive optical network, zvinoreva kuti iyo ODN (optical distribution network) pakati pemagetsi.OLT(Optical line terminal) uye iyoONU(optical network unit) haina chero midziyo inoshanda, uye inongoshandisa optical fibers uye passive components. PON inonyanya kutora point-to-multipoint network chimiro, inova tekinoroji huru yekuziva FTTB/FTTH.
PON tekinoroji ine zvakawanda zvemukati, uye inovandudzwa nguva dzose. Kuvandudzwa kwehunyanzvi hweXPON kunobva kuAPON, BPON, uye gare gare GPON neEPON. Aya matekinoroji emhando dzakasiyana dzekutapurirana uye zviyero zvekutapurirana zvakagadziridzwa munguva dzakasiyana.
Chii chinonzi EPON?
EPON (Ethernet Passive Optical Network) iEthernet passive optical network. EPON yakavakirwa paPON tekinoroji yeEthernet, iyo inosanganisa zvakanakira zvePON tekinoroji uye tekinoroji yeEthernet. Iyo inotora point-to-multipoint chimiro uye passive optical fiber kutapurirana kuti ipe akawanda masevhisi pamusoro peEthernet. Nekuda kwehupfumi uye nemafambisirwo ekufambisa kweEPON, ndiyo nzira yekutaurirana inoshanda zvakanyanya kuona "mambure matatu mune imwe chete" uye "yekupedzisira mamaira".
Chii chinonzi GPON?
GPON (Gigabit-Capable Passive Optical Network) ndeye Gigabit passive optical network kana Gigabit passive optical network. Izvo zviyero zvakatorwa neEPON neGPON zvakasiyana. Zvinogona kutaurwa kuti GPON yakanyanyisa uye inogona kutumira bandwidth yakawanda, uye inogona kuunza vashandisi vakawanda kupfuura EPON. Kunyange zvazvo GPON ine mabhenefiti pamusoro peEPON pamitengo yepamusoro uye masevhisi akawanda, tekinoroji yeGPON yakaoma kunzwisisa uye mutengo wayo wakakwira kupfuura EPON. Naizvozvo, parizvino, EPON neGPON matekinoroji ane mamwe maPON Broadband kuwana maapplication. Ndeipi tekinoroji yekusarudza inoenderana zvakanyanya nemutengo weiyo optical fiber kuwana uye bhizinesi zvinodiwa. GPON ichave yakakodzera kune vatengi vane bandwidth yakakwirira, yakawanda-sevhisi, QoS uye kuchengetedza zvinodiwa uye ATM tekinoroji semusana. Iko kuvandudza kweramangwana ndeyepamusoro bandwidth. Semuenzaniso, tekinoroji yeEPON/GPON yakagadzira 10 G EPON/10 G GPON, uye bandwidth ichawedzera kuvandudzwa.
Sezvo kudiwa kwesimba revanopa network kuri kuramba kuchiwedzera, kuwanda kwekuwana network kunofanirwawo kuwedzerwa kuti isangane nekudiwa kuri kukura uku. Fiber-to-the-home (FTTH) passive optical network (PON) optical network access ndiyo inonyanya kushandiswa uye kushandiswa tekinoroji. Zvakanakira zvePON tekinoroji ndezvekuti inogona kuderedza basa remusana optical fiber zviwanikwa uye kuchengetedza mari; iyo network chimiro inoshanduka uye kugona kwekuwedzera kwakasimba; chiyero chekutadza kwepassive optical zvishandiso zvakaderera, uye hazvisi nyore kukanganiswa nekunze kwezvakatipoteredza; uye bhizinesi rekutsigira kugona kwakasimba.