Qhib rau "Cov Kev Sib Ceg Zoo Nruab Nrig." Lub PON yog ib txoj kev sib txuas lus sib txuas lus uas xa cov ntaub ntawv tshaj li cov kab muaj fiber ntau . Nws yog "passive" txij thaum nws siv cov neeg tsis tau txais kev ncaj ncees rau txoj kev xa cov ntaub ntawv xa tawm los ntawm ib qho chaw hauv nruab nrab rau ntau lub chaw.
PONs yog siv ISPs thiab NSPs los ua ib txoj hauv kev siv nyiaj rau kev siv Internet rau cov neeg siv khoom. Txij thaum PON yog point-to-multipoint (P2MP), nws muab ntau txoj kev xa tawm cov ntaub ntawv tshaj qhov point-to-point network . Txoj kab sib chaws tseem ceeb tuaj yeem faib tawm rau hauv 32 cais cov kab, uas yuav tsum muaj tsawg dua qub kev lag luam dua li hauv kev ncaj cov kab rau txhua qhov chaw.
Qhov chaw nyob ntawm PON tseem hu ua qhov dav hlau kho qhov dav hlau (OLT), thaum cov tib neeg destinations yog hu ua qhov chaw sib txuas ntawm cov naiskhu (ONUs). Cov kab uas tawm hauv tsev sab nraud yog hu ua fiber ntau los ntawm cov neeg zej zog (FTTH) lossis fiber-to-the-curb (FTTC). Cov kab txuas mus rau tag nrho kev mus rau hauv vaj tse yog hu ua fiber-to-the-house (FTTB), los yog fiber ntau-hauv-tsev (FTTH).
Thaum tag nrho cov PONs siv cov cab muag kho qhov muag thiab cov neeg tsis muaj zog, lawv muaj ntau ntau yam txawv. Hauv qab no yog cov npe ntawm ntau hom PONs.
APON - ua ntej siv (los ntawm nruab nrab xyoo 1990) uas siv asynchronous hloov hom ( ATM ) los hloov cov ntaub ntawv
BPON - thawj " broadband " PON uas txhawb cov ntaub ntawv xa cov ntaub ntawv ntawm 622 Mbps, tib qhov ceev raws li kab OC-12 (STM-4)
GPON - lub "gigabit-capable PON" uas txhawb 2.488 Gbps hauv qab thiab 1.244 Gbps ntws; kuj hu ua ITU G.984 tus qauv
EPON - kev siv PON ntau tshaj plaws; kis cov ntaub ntawv raws li Ethernet thav ntawv txog li 10 Gbps hauv qab thiab ntws los; kuj hu ua GEPON los yog IEEE 802.3 tus qauv
