GPON（Gigabit-Peev Xwm PON）, Gigabit Passive Fiber Optical Network
GPON, Gigabit-Peev PON, Gigabit passive optical network. GPON (Gigabit-Capable PON) tau xub pib los ntawm lub koom haum FSAN thaum lub Cuaj Hlis 2002.
Cov Lus Txhais ntawm GPON
GPON (Gigabit-Capable PON) thev naus laus zis yog tiam tshiab ntawm qhov dav dav passive kho qhov muag tau nkag tau cov qauv raws ITU-TG.984.x txuj. Nws muaj ntau yam zoo xws li lub siab bandwidth, siab ua haujlwm, kev pab them nqi loj, cov neeg siv nplua nuj interface, thiab lwm yam. Cov neeg ua haujlwm feem ntau suav tias nws yog qhov thev naus laus zis zoo tshaj plaws rau kev ua tiav qhov dav dav thiab kev sib koom ua ke ntawm kev nkag mus rau cov kev pabcuam network.
GPON txuj
GPON tau pib pom zoo los ntawm FSAN lub koom haum nyob rau lub Cuaj Hli 2002. Raws li lub hauv paus no, ITU-T ua tiav ITU-T G.984.1 thiab G.984.2 hauv Lub Peb Hlis 2003, thiab ua tiav G. thaum Lub Ob Hlis thiab Lub Rau Hli 2004. Kev ntsuas tus qauv ntawm 984.3 Cov. Yog li, tus qauv tsev neeg ntawm GPON thaum kawg tau tsim.
Tus qauv yooj yim ntawm lub cuab yeej raws li GPON thev naus laus zis zoo ib yam li PON uas twb muaj lawm. Nws tseem yog OLT (kho qhov muag kab davhlau ya nyob twg) ntawm lub hauv paus chaw ua haujlwm, ONT / ONU ntawm tus neeg siv kawg (qhov kho qhov muag network davhlau ya nyob twg lossis cov kho qhov muag network), thiab thawj ob lub khoom siv txuas nrog los ntawm tib hom. Cov khoom siv fiber ntau (SM fiber) thiab passive splitter (Splitter) tau tsim los ntawm ODN (Optical Distribution Network) thiab cov kev tswj hwm network.
Rau lwm PON tus qauv, GPON tus qauv muab qhov tsis tau pom dua qhov siab bandwidth nrog tus nqi downlink ntawm li 2.5 Gbit / s, thiab nws cov yam ntxwv asymmetric zoo dua rau cov kev pab cuam dav dav cov ntaub ntawv ua lag luam. Nws muab tag nrho cov kev pabcuam lees paub ntawm QoS, thiab nqa cov npav ATM thiab / lossis GEM thav ntawv. Nws muaj cov kev pabcuam zoo, QoS lav thiab tag nrho cov kev pabcuam. Thaum nqa GEM ntas, cov kev pabcuam TDM tuaj yeem raug tso rau hauv GEM thav ntawv, thiab tus qauv 8 kHz (125 μs) thav ntawv tuaj yeem ncaj qha txhawb cov kev pabcuam TDM. Raws li tus txheej txheem nqa khoom-chav kawm txuj ci kev lag luam, GPON tseem qhia meej txheej txheem tiv thaiv kev ua tiav thiab ua tiav OAM kev ua haujlwm ntawm cov txheej txheem nkag network.
Hauv GPON tus qauv, cov hom kev pabcuam uas xav tau kev txhawb nqa tau pom meej meej: cov ntaub ntawv pabcuam (Cov kev pabcuam Ethernet, suav nrog cov kev pabcuam IP thiab MPEG cov vis dis aus), cov kev pabcuam PSTN (POTS, ISDN kev pabcuam), thiab cov kab mob siab (T1, E1, DS3, E3, thiab kev pabcuam ATM). ) thiab kev pabcuam video (digital video). Ntau cov kev pabcuam hauv GPON tau teeb txheeb rau ATM cells lossis GEM thav ntawv rau kis, muab cov QoS lav rau ntau yam kev pabcuam.
GPON networking hom
Tam sim no, lub ntsiab sib txuas hauv hom tau txais los ntawm GPON yog FTTH / O, FTTB + LAN thiab FTTB + DSL.
1)FTTH / O yog fiber ntau rau hauv tsev / chaw ua haujlwm. Tom qab cov hluav taws xob fiber nkag nkag rau hauv qhov kho qhov muag tawg, nws txuas ncaj qha rau cov neeg siv ONU. Ib lub ONU tsuas yog siv los ntawm ib tus neeg siv nkaus xwb. Txoj kab xev band yog qhov siab thiab tus nqi siab. Feem ntau, nws yog tsom rau cov neeg siv high-end thiab cov neeg siv kev lag luam.
2) FTTB + LAN yog fiber-rau-hauv-pem teb, thiab tom qab ntawd nkag mus rau ntau cov kev pabcuam rau ntau tus neeg siv los ntawm kev muaj peev xwm loj-ONU (hu ua MDU). Yog li ntawd, ntau cov neeg siv sib faib cov bandwidth cov cuab yeej ntawm ib qho ONU, txhua tus neeg nyob qis bandwidth thiab cov nqi qis dua. , feem ntau rau cov vaj tsev qis thiab cov ua lag luam qis.
3) FTTB + ADSL yog fiber ntau-rau-lub tsev, thiab tom qab ntawd nkag mus rau ntau tus neeg siv hauv ADSL hom. Nws kuj tseem koom nrog ntau lub ONUs nrog ntau cov neeg siv. Kev siv bandwidth, tus nqi thiab cov neeg siv khoom siv zoo ib yam li FTTB + LAN.
GPON downlink tus nqi
Qhov siab tshaj plaws downlink tus nqi ntawm GPON yog 2.5Gbps, tus cwj pwm sab sauv yog 1.25Gbps, thiab qhov sib cais sib faib yog 1:64.
OPTICO KEV SIB TXUAS LUS (www.fiberopticom.com) tsom mus rau kev txhim kho offiber optic network sib txuas lus cov khoom kab thiab muab kev daws teeb meem zoo rau cov khoom siv sib txuas fiber ntau. Peb muab cov fiber ntau ua ke, xws li cov hlua fiber ntau, fiber ntau pigtail, PLC splitter, txuas txuas ceev, MTP / MPO, CWDM / DWDM, SFP, FTTH tov, Cov ntaub ntawv nruab nrog cov xov hluav taws xob, thiab lwm yam. kev tsim khoom thiab tshuaj xyuas, kom ntseeg tau tias muaj kev ua haujlwm zoo thiab ruaj khov khoom zoo, thiab kev nyab xeeb thiab kev ntseeg tau zoo kom ntseeg tau siv lub sijhawm ntev ntawm cov khoom.
Kom paub meej ntxiv, pls mus xyuas OPTICO lub vev xaib:www.fiberopticom.com.