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 oposa 3, ndipo kugwiritsa ntchito teknoloji ya wavelength division multiplexing kuti mukwaniritse 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 zikuwonekera pa Chithunzi 1.OLTndi 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 ndiOLTzida. OWDN imatanthawuza maukonde owoneka bwino omwe ali pakati paOLTndiONU, ndikuzindikira kugawa kwa mafunde kuchokera kuOLTku kuONUkapena kuONUku kuOLT. 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. TheONUimayikidwa pamalo ogwiritsira ntchito ndipo ndi chipangizo chamagetsi chamagetsi kumbali ya wogwiritsa ntchito.
Kulowera kumunsi kwa mtsinje, mafunde osiyanasiyana ld1…ldn amatumizidwa ku OWDN pambuyo pa kuchulukitsa kwa OM/OD kwa ofesi yapakati, ndipo amapatsidwa kwa aliyense.ONUmolingana ndi mafunde osiyanasiyana. Kumbali yakumtunda, ogwiritsa ntchito osiyanasiyanaONUamatulutsa mafunde osiyanasiyana a kuwala lu1…lun ku OWDN, multiplex pa PRN ya OWDN, ndiyeno kufalitsa kuOLT. 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.