Kev Taw Qhia luv luv ntawm PON

Lub passive optic network (PON) siv fiber ntau optic technology thauj cov ntaub ntawv los ntawm ib qho chaw mus rau ntau qhov kawg. Lo lus "passive" yog hais txog kev siv cov fiber ntau optic cables txuas nrog cov kais dej tsis muaj zog, uas ua rau nqa cov ntaub ntawv los ntawm cov chaw muab kev pabcuam network rau ntau tus neeg siv khoom. Technically hais lus, tsuas yog cov kais dej yog passive, raws li lub hauv paus thiab receiver kawg ntawm lub network tseem xav tau lub hwj chim rau kev khiav hauj lwm.

Cov chaw muab kev pabcuam raug nqi qis dua vim tias cov kev pabcuam PON tuaj yeem txhawb nqa ntau tus neeg siv khoom los ntawm ib lub router / hloov chaw nres nkoj thiab siv cov kais dej tsis muaj zog los qhia cov ntaub ntawv rau cov neeg siv khoom. Tsis tas li ntawd, cov cuab yeej siv tsawg thiab fiber ntau yuav tsum tau ua dua yog tias cov kev pabcuam raug xa tawm ntawm AON architecture.

Nrog fiber ntau optic cabling, cov neeg siv khoom tau txais kev sib txuas ceev tshaj plaws muaj thiab PON yog lub zog txuag - cov khoom siv hluav taws xob tsawg txhais tau tias siv hluav taws xob tsawg. Dab tsi ntxiv, PON xa cov ntaub ntawv nce thiab nqis qis ntawm qhov nrawm zoo sib xws thiab tsis muaj qhov tsis zoo.

Muaj ob tus qauv tseem ceeb ntawm PON architecture: Gigabit Passive Optical Network (GPON) thiab Ethernet Passive Optical Network (EPON). Ob leeg muaj cov ntaub ntawv hloov ceev tshwj xeeb xws li 1 Gbps txog 10 Gbps. PON architecture siv point-to-multi-point txuas raws li kev khiav tsheb khiav los ntawm ib qhov chaw (tus neeg muab kev pabcuam) rau ntau tus neeg siv. Los ntawm kev siv cov splitters, ib pob ntawm fibers los ntawm qhov kho qhov muag kab davhlau ya nyob twg (OLT) tuaj yeem rov ua dua rau ntau ceg, yog li ua haujlwm rau 128 qhov chaw sib txawv.