WDM PON ndi ma point-to-point passive optical network pogwiritsa ntchito ukadaulo wavelength division multiplexing.Ndiko kuti, mu ulusi womwewo, chiwerengero cha mafunde omwe amagwiritsidwa ntchito mbali zonse ziwiri ndi choposa 3, ndipo kugwiritsa ntchito teknoloji ya wavelength division multiplexing kuti mukwaniritse mwayi wa uplink kungapereke chiwongolero chachikulu chogwira ntchito pamtengo wotsika, womwe ndi wofunikira kwambiri pa chitukuko. tsogolo la Optical fiber access.Dongosolo la WDM PON lili ndi magawo atatu: Optical Line Terminal (OLT), Optical Wavelength Distribution Network (OWDN) ndi Optical Network Unit (ONU: Optical Network Unit), monga momwe tawonetsera pa Chithunzi 1. OLT ndi zida zapakati paofesi, kuphatikiza optical wavelength division multiplexer/demultiplexer (OM/OD).Nthawi zambiri, imakhala ndi ntchito monga kuwongolera, kusinthana, ndi kasamalidwe.OM / OD ya ofesi yapakati ikhoza kulekanitsidwa mwakuthupi ndi zida za OLT.OWDN imatanthawuza maukonde a kuwala omwe ali pakati pa OLT ndi ONU, ndipo amazindikira kugawidwa kwa kutalika kwa mawonekedwe kuchokera ku OLT kupita ku ONU kapena kuchokera ku ONU kupita ku OLT.Ulalo wakuthupi umaphatikizapo ulusi wa feeder ndi node yakutali (PRN: Passive Remote Node).PRN makamaka imaphatikizirapo kuyika kwa ma waveguide grating (AAWG: Athermal Arrayed Waveguide Grating).AAWG ndi chipangizo chowoneka bwino cha mawonekedwe owoneka bwino chomwe chimagwira ntchito zochulukitsira mafunde ndi ma demultiplexing.ONU imayikidwa pamalo ogwiritsira ntchito ndipo ndi chipangizo chamagetsi chamagetsi kumbali ya wogwiritsa ntchito.
Kulowera pansi, mafunde osiyanasiyana ld1 ... ldn amatumizidwa ku OWDN pambuyo pa OM / OD multiplexing ya ofesi yapakati, ndipo amapatsidwa kwa ONU iliyonse molingana ndi kutalika kwa mafunde.Kumtunda kwa mtsinje, ma ONU osiyana amatulutsa mafunde osiyanasiyana a kuwala lu1…lun kupita ku OWDN, multiplex pa PRN ya OWDN, ndiyeno kutumiza ku OLT.Malizitsani kutumiza kumtunda ndi kunsi kwa mtsinje kwa ma siginolo owoneka.Pakati pawo, mafunde apansi pamtsinje ldn ndi mafunde amtunda okwera amatha kugwira ntchito mofananamo kapena mafunde osiyanasiyana.