FTTH - PON - Exhibition - Focc Technology Co., Ltd

FTTH - PON

PON yog Passive Optical Network tshwj xeeb nrog ib-rau-ntau-point architecture. Raws li pom nyob hauv cov duab hauv qab no, nws muaj ntawm Optical Line Terminal (OLT), Chav Network Tseeb thiab Passive Optical Splitter.

Passive Optical Network Architecture

Keeb kwm ntawm PON

Thawj qhov Passive Optical Network (PON) cov haujlwm tau pib los ntawm FSAN pab pawg nyob rau nruab nrab xyoo 1990. Tus qauv pib tau them 155 Mbps kis raws ATM paub li qauv APON / BPON. Tom qab ntawd, cov qauv txhim kho kom zoo dua rau npog 622 Mbps.

Hauv xyoo 2001, IEEE pib qhov kev loj hlob ntawm Ethernet raws tus qauv hu ua EPON.

Hauv xyoo 2001, FSAN pab pawg tau pib txhim kho gigabit tus qauv ceev, piv txwv li, GPON, kom pom zoo los ntawm ITU-T.

Keeb kwm ntawm PON

PON Network Architecture

Cov duab hauv qab no qhia txog lub network architecture ntawm PON -

Architecture ntawm PON

Qhov twg,

SNI - Kev Pab Sib Cuam
IFPON - Kev Sib Tw rau PON
UNI - Tus Neeg Siv Sib Ceg Sib tshuam

Raws li pom nyob rau hauv daim duab saum toj no, ODN tuaj yeem teeb tsa nrog ib qho lossis ntau qhov sib cais nrog ob peb qhov txig.

PON - Multiplexing

PON siv WDM kom paub txog kev thauj ob-txoj kev thauj ntawm ib qho fiber ntau (saib daim duab qhia hauv qab) -

PON Multiplexing

Txhawm rau kom paub qhov txawv ntawm cov cim qhia hauv ob qho kev qhia sib txawv, ob lub tshuab muaj tswv yim sib txawv tau saws, uas yog -

TDM
TDMA

Cia peb tham txog lawv hauv kev nthuav dav -

Lub Sijhawm Sijhawm Sib Tw (Multiplexing) rau qhov nqes hav dej - Nws yog txheej txheem ntawm kev sib kis thiab txais cov cim sib cais hla ntawm ib qho kev teeb liab. Rau qhov no, nws siv cov kev hloov kho synchronized ntawm txhua qhov kawg ntawm kis kab; yog li ntawd, txhua lub teeb liab tshwm ntawm txoj kab tsuas yog ib feem ntawm lub sijhawm hauv ib qho kev hloov pauv.

TDM

Lub Sijhawm Sib Tw Ntau Txoj Haujlwm () rau ntws los sib cuag - cov txheej txheem no tswj hwm ntau tus neeg siv kom faib tib qho kev tso tawm channel los ntawm kev faib cov teeb liab mus rau lub sijhawm sib txawv.

TDMA

PON: Downstream

Kev tshaj tawm hom - Cov ntaub ntawv hauv qab tau tshaj tawm rau txhua ONUs. Tab sis, ntawm ONU, tsuas yog cov pob ntawv tshwj xeeb ua tiav, thiab cov ntawv so ntxiv pov tseg.

PON Downstream

PON: Sab saud (hom kev TDMA)

Cov duab hauv qab no qhia txog TDMA hom.

PON Kev Nto Dej

Cov duab hauv qab no qhia txog ob qho txuj ci ua ke -

PON Downstream thiab Sab Xauv

PON Terminologies

Hauv qab no yog PON cov lus xaus -

ODN (Optical Distribution Network) - ODN paub txog qhov pom kev kis tau los ntawm OLT ntawm cov neeg siv thiab lwm qhov hloov mus. Nws siv passive kho qhov muag Cheebtsam.
OLT (Optical Line Termination) - OLT yog qhov chaw pabcuam kawg ntawm PON thiab muab tso rau hauv CO lossis taub hau kawg.
ONT / ONU (Optical Network Termination) - ONT yog ib lub cuab yeej uas txiav PON thiab nthuav tawm cov kev pabcuam ib txwm muaj rau cov neeg siv. Ib qho ONT feem ntau nyob ntawm tus neeg siv khoom lag luam.

PON Kev Nkag Network

Passive Optical Network (PON) yog qhov ua tau zoo tsim nyog tus nqi kho qhov muag kho qhov muag ua tau zoo los ntawm kev ua kom muaj peb qhov kev ua si (suab, yees duab, & cov ntaub ntawv) rau cov kev lag luam thiab cov neeg siv khoom hauv thaj chaw. Dhau li ntawm, cov ntsiab lus yooj yim uas tau qhia hauv cov duab hauv qab no, PON tuaj yeem ua haujlwm hauv lwm qhov topologies. Piv txwv - Tsheb npav lossis kab, sib faib faib ua kom sib cais, thiab lwm yam.

PON Kev Nkag Network

Qhov sib txawv ntawm cov ntsiab lus uas siv, yog nyob ntawm cov neeg siv khoom xa khoom.

Ib qho ONT tuaj yeem txuas nrog PON hauv txhua txoj kev zam tsuav -

Pob nyiaj siv kho qhov muag los ntawm ONT rau OLT & lwm yam tau ntsib.
Cov kev qhia tshwj xeeb ntawm qhov sib txawv siab qhov deb tshaj plaws ntawm sib txawv ONTs tau ntsib.
Fiber ntev los ntawm ONT rau OLT yog nyob rau hauv kev pom zoo ntau.
Txwv tsis pub ntau tshaj plaws ntawm ONTs uas PON system tuaj yeem txhawb nqa tsis dhau.