EPON iPON tekinoroji yakavakirwa paEthernet.Inoshandisa tekinoroji yePON pachikamu chemuviri, Ethernet protocol pane data link layer, Ethernet kuwana uchishandisa PON topology, uye yakazara-sevhisi kuwana data, izwi, uye vhidhiyo uchishandisa optical fiber.
EPON tsananguro yechigadzirwa:
EPON inotumira uye inogamuchira zviratidzo pane imwe faibha.Iyi nzira inonzi single-fiber bidirectional transmission mechanism.Uchishandisa WDM wavelength division multiplexing tekinoroji, single-fiber bidirectional transmission inowanikwa neyakasiyana wavelengths (yakadzika 1490nm, kumusoro kwe1310nm), uye kumusoro uye kuzasi kwedata hova inofambiswa panguva imwe chete pane imwe fiber pasina kukanganisa mumwe nemumwe.
Panguva imwecheteyo, 1000 BASE-PX-10 U inotsanangurwa / D uye 1000 BASE-PX-20 U / D PON optical interfaces inotsigira kureba kwekufambisa kwe10 km uye 20 km zvakateerana.EPON inogona kupa 1.25 Gbit / s kumusoro kwerwizi. uye yakadzika bandwidth.Ndiyo passive optical network yakavakirwa paEthernet.Iyo OLT inotora Ethernet encapsulation uye inotumira Ethernet furemu chimiro.Naizvozvo, EPON yakavakirwa pa802.3 furemu fomati.
Maererano nechibvumirano cheIEEE802.3ah-2004: simba rekutumira redivi reOLT rakakura kudarika 2dBm, uye kugamuchira kunzwa kuri <-27dBm;nokuti simba rekutumira reONU rakakura kudarika -1dBm, kunzwa kwekugamuchira ndeye <-24dBm, kurasikirwa kwese optical link kusvika ku <24dB, kusvika ku <23.5dB.Kurasikirwa kweEPON kumusoro kwe1310nm uye kuzasi kwe1490nm wavelengths muG.652 fiber inenge 0.3dB / km.Muchidimbu, bhajeti yemagetsi ndiyo inonyanya kukosha kune kureba EPON.
EPON chigadzirwa maficha
①1.25Gbps symmetric imwe fiber bidirectional data link
②3.3V kushanda voltage
③DDM yedhijitari kuongororwa yekutarisa basa
④Anti-electromagnetic kupindira, ine anti-static dziviriro
⑤Terera neIEC-60825 Kirasi 1 laser kuchengetedza mwero
⑥Kutengeserana tembiricha yekushanda: 0 ℃ ~ 70 ℃
EPON tekinoroji application
① Kune vashandisi veveruzhinji, nzira dzekushandisa dzakadai seFTTH uye FTTB / C / Cab dzinogona kushandiswa.
②Kuvashandisi vebhizinesi, nzira dzakasiyana dzekushandisa dzakadai seFTTO, FTTB, kana FTTC dzinogona kugamuchirwa zvinoenderana nezvinodiwa zvebhizinesi zvakasiyana uye chiyero chemushandisi.
③ "Global Ziso" uye mamwe maapplication anoda yakakwira bandwidth (kunyanya kumusoro kwe bandwidth) anogona kushandisa EPON senzira yekuwana.PON inotsiva iyo yekutanga Layer 2 / Layer 3 switch mune analog networking mhinduro, uku ichichengetedza yakawanda fiber transceivers, uye haidi vhidhiyo optical transceiver michina.
④Munyaya yekushaikwa kweiyo optical fiber zviwanikwa, senge musha wemusha purojekiti, iyo optical splitter scheme ine akawanda-level kupatsanura uye isina kuenzana kupatsanura simba inogona kushandiswa, ndiko kuti, simba harina kuenzana kana paine chete kana akati wandei cores. Optical splitters inoungana poindi nepoindi.
EPON inonyatsozadzisa zvinodiwa nebandwidth yekuwana vatengi venetiweki, uye inokwanisa kugovera zvine simba uye nekuchinjika zvinoenderana nekuchinja kwezvinodiwa nevashandisi, zvichiita kuti hupenyu hwevagari venharaunda huve hwakagadzikana, hwakachengeteka uye nyore.