WDM PON ke ntlha-to-point passive optical network e sebelisang theknoloji ea wavelength division multiplexing. Ke hore, ka fiber e tšoanang, palo ea maqhubu a maqhubu a sebelisoang ka mahlakoreng ka bobeli a feta 3, 'me tšebeliso ea thekenoloji ea "wavelength division multiplexing" ho finyella phihlello ea uplink e ka fana ka bandwidth e kholo ea ho sebetsa ka theko e tlaase, e leng tataiso ea bohlokoa ea tsoelo-pele nakong e tlang Optical faeba phihlello. Sistimi e tloaelehileng ea WDM PON e na le likarolo tse tharo: Optical Line Terminal (OLT), Optical Wavelength Distribution Network (OWDN) le Optical Network Unit (ONU: Setsi sa Optical Network), joalo ka ha ho bonts'itsoe ho Setšoantšo sa 1.OLTke lisebelisoa tsa ofisi tse bohareng, ho kenyelletsa le optical wavelength division multiplexer/demultiplexer (OM/OD). Ka kakaretso, e na le mesebetsi e kang taolo, phapanyetsano, le tsamaiso. OM / OD ea ofisi e bohareng e ka aroloa ka 'mele hoOLTthepa. OWDN e bua ka marang-rang a optical a teng pakeng tsaOLTle eaONU, le ho hlokomela kabo ea wavelength ho tloha hoOLTho eaONUkapa ho tloha hoONUho eaOLT. Khokahano ea 'mele e kenyelletsa fiber e fepang le node e hole e sa sebetseng (PRN: Passive Remote Node). PRN haholo-holo e kenyelletsa grating ea waveguide e sa utloahaleng ea mocheso (AAWG: Athermal Arrayed Waveguide Grating). AAWG ke sesebediswa sa wavelength-sensitive passive optical se etsang optical wavelength multiplexing le demultiplexing mesebetsi. TheONUe behiloe sebakeng sa mosebelisi mme ke sesebelisoa sa optical terminal lehlakoreng la mosebelisi.
Ka lehlakoreng le ka tlaase ho noka, maqhubu a mangata a fapaneng a ld1…ldn a fetisetsoa ho OWDN ka mor'a ho atisa OM/OD ea ofisi e bohareng, 'me e abeloa e' ngoe le e 'ngoe.ONUho latela maqhubu a fapaneng. Ka lehlakoreng le holimo, basebelisi ba fapanengLi-ONUemit different optical wavelengths lu1…lun to OWDN, multiplex at PRN of the OWDN, ebe e fetisetsa hoOLT. Qetella phetiso ea mats'oao a mahlo a holimo le a tlase. Har'a tsona, leqhubu la maqhubu a tlaase le maqhubu a maqhubu a holimo le holimo li ka sebetsa ka har'a maqhubu a tšoanang kapa maqhubu a fapaneng a maqhubu.