I-PON (Passive Optical Network) isho ukuthi ayikho into esebenzayo futhi sebenzisa kuphela i-Optical Fiber kanye ne-Passive Components phakathi kwe-OLT ( Optical Line Terminal) ne-ONU ( Optical Network Unit).Futhi i-PON kubuchwepheshe obuyinhloko bokusebenzisa i-FTTB/FTTH, eyamukela ngokuyinhloko iphuzu lesakhiwo senethiwekhi enamaphuzu amaningi.
Kuningi okuqukethwe ku-PON Technology, kanti i-PON Technology ihlezi iphindaphinda futhi ibuyekeza.Ubuchwepheshe be-XPON buthuthukiswe kusuka ku-APON, BPON, futhi kamuva ne-EPON kanye ne-GPON.Kunezindlela ezahlukene zokudlulisela kanye namazinga okudlulisela athuthukiswe ngezikhathi ezahlukene.
Yini i-APON?
Ekupheleni kweminyaka yawo-1990, i-ITU (i-International Telecommunication Union) yaqala yahlongoza i-APON isebenzisa i-Asynchronous Transfer Mode (ATM) yokuxhumana kwephakethe.I-APON isebenzisa ukuphindaphindeka okuphakathi nendawo kanye nezibalo kwe-ATM, kuhlanganiswe nomsebenzi wokwabelana we-passive divider ku-fiber optical kanye ne-Optical Line Terminal, okwenza izindleko zehle ngo-20%~40% kunohlelo lokufinyelela lwe-PDH/SDH oluvamile olusekelwe kumjikelezo. ukushintsha.
Yini i-BPON?
Ngokuthuthuka okusheshayo kwe-Ethernet Technology, i-APON ayisasetshenziswa.Ngalesi sikhathi, kwahlongozwa umqondo we-Broadband Passive Optical Network (BPON).I-BPON ithuthukisa izinga le-APON, ekuqaleni elaziwa ngokuthi i-APON, kodwa kamuva yashintsha yaba yi-BPON ngezinjongo ezihlukile.I-BPON isuselwe kuphrothokholi ye-ATM, enesivinini esikhuphuka nomfula esingu-155Mbpas kanye no-622Mbps ngokulandelanayo.Ngasikhathi sinye, Yengeza ukwabiwa komkhawulokudonsa oguqukayo, ukuvikela neminye imisebenzi, futhi inganikeza ukufinyelela kwe-Ethernet, ukudluliswa kwevidiyo, Imigqa eqashwe ngesivinini esiphezulu nezinye izinsiza.
Yini i-EPON?
Ngenxa yezindleko eziphezulu zokuphakela ze-BPON, kamuva yathathelwa indawo eyonga futhi eshesha kakhulu i-EPON.EPON (i-Ethernet Passive Optical Network) ubuchwepheshe be-Ethernet Passive Optical Network.EPON PON obusekelwe ku-Ethernet buhlanganisa izinzuzo zobuchwepheshe be-PON futhi Ubuchwepheshe be-Ethernet, bamukela i-Point to Multi-point structure, i-passive optical fiber transmission,
Ngenxa yezindleko eziphezulu zokuphakela ze-BPON, kamuva yathathelwa indawo eyonga futhi eshesha kakhulu i-EPON.EPON (i-Ethernet Passive Optical Network) ubuchwepheshe be-Ethernet Passive Optical Network.EPON PON obusekelwe ku-Ethernet buhlanganisa izinzuzo zobuchwepheshe be-PON futhi Ubuchwepheshe be-Ethernet, busebenzisa isakhiwo se-Point to-Multi-point, i-passive optical fiber transmission, futhi inikeza izinhlobonhlobo zezinsizakalo ku-Ethernet.Ngenxa yokuthi i-EPON iyonga futhi iyasebenza ukuyisebenzisa, iyindlela ephumelela kakhulu yokufinyelela "amanethiwekhi amathathu kwelinye" kanye "imayela lokugcina" ukuxhumana.
Iyini i-GPON?
I-GPON (Gigabit-Capable Passive Optical Network) iyinethiwekhi ye-Gigabit Passive Optical noma i-Gigabit Passive Optical Network.EPON kanye ne-GPON zisebenzisa amazinga ahlukene, futhi i-GPON ngokungangabazeki ithuthuke kakhulu, ikwazi ukudlulisa umkhawulokudonsa omningi futhi ithwala abasebenzisi abaningi kune-EPON.Nakuba i-GPON inabo izinzuzo ngesivinini esikhulu kanye nezinsizakalo eziningi uma kuqhathaniswa ne-EPON, ubuchwepheshe be-GPON bunzima kakhulu futhi izindleko zabo ziphakeme kune-EPON.Ngakho-ke, okwamanje, i-EPON ne-GPON ubuchwepheshe obusetshenziswa kakhulu ekufinyeleleni kwe-Broadband ye-PON, nokukhetha okuyikhona. ubuchwepheshe buncike kakhulu ezindlekweni zokufinyelela kwe-fiber optical kanye nezidingo zebhizinisi.I-GPON izofaneleka kangcono kumakhasimende ane-bandwidth ephezulu, izinsizakalo eziningi, i-QoS nezidingo zokuphepha, kanye nobuchwepheshe be-ATM njengomgogodla.Ukuthuthukiswa kwesikhathi esizayo kuyi-bandwidth ephakeme, isibonelo , ubuchwepheshe be-EPON/GPON buthuthukisa i-10 G EPON / 10 G GPON, umkhawulokudonsa uzothuthukiswa nakakhulu.
Ukwazi okwengeziwe nge-APON, BPON, EPON,GPON
Njengoba izimfuno zamandla kubahlinzeki benethiwekhi ziqhubeka nokwanda, ukuguquguquka kwamanethiwekhi okufinyelela kufanele futhi kwande ukuze kuhlangatshezwane nalesi sidingo esikhulayo.I-Fiber to the home (FTTH) passive optical network (PON) ukufinyelela kwenethiwekhi ye-optical network iwubuchwepheshe obusetshenziswa kakhulu futhi obusetshenziswa kakhulu. Izinzuzo zobuchwepheshe be-PON ukuthi bunganciphisa ukusetshenziswa kwemithombo yefayibha yomgogodla futhi yonge utshalomali.Isakhiwo senethiwekhi esivumelana nezimo, ikhono eliqinile lokunwebeka;Imishini yokubona engabonakali inezinga eliphansi lokwehluleka futhi akulula ukuphazanyiswa imvelo yangaphandle.Ukwesekwa okuqinile kwebhizinisi ikhono, njll.