I-WDM PON yi-point-to-point passive optical network isebenzisa i-wavelength division multiplexing technology. Oko kukuthi, kwifiber efanayo, inani leemitha ezisetyenziswa kumacala omabini lingaphezulu kwe-3, kwaye ukusetyenziswa kwe-wavelength division multiplexing iteknoloji ukufezekisa ukufikelela kwe-uplink kunokubonelela nge-bandwidth enkulu yokusebenza ngexabiso eliphantsi, eliyindlela ebalulekileyo yokuphuhlisa ukufikelela kwifiber yeOptical kwixesha elizayo. Inkqubo ye-PON ye-WDM eqhelekileyo inamacandelo amathathu: Itheminali ye-Optical Line (OLT), i-Optical Wavelength Distribution Network (OWDN) kunye neYunithi yeNethiwekhi ye-Optical (I-ONU: Iyunithi yeNethiwekhi ye-Optical), njengoko kubonisiwe kuMfanekiso 1.OLTsisixhobo se-ofisi esisembindini, kuquka i-optical wavelength division multiplexer/demultiplexer (OM/OD). Ngokubanzi, inemisebenzi efana nolawulo, utshintshiselwano, kunye nolawulo. I-OM/OD ye-ofisi ephakathi inokohlulwa ngokwasemzimbeniOLTizixhobo. I-OWDN ibhekisa kuthungelwano olubonakalayo oluphakathi kweOLTkwaye iI-ONU, kwaye iqonda unikezelo lobude obusuka kwiOLTkwiI-ONUokanye ukusuka kwiI-ONUkwiOLT. Ikhonkco lomzimba libandakanya i-fiber feeder kunye ne-passive node ekude (PRN: i-Passive Remote Node). I-PRN ikakhulu ibandakanya i-thermal insensitive arrayed waveguide grating (AAWG: I-Athermal Arrayed Waveguide Grating). I-AAWG sisixhobo sokukhanya esingevayo sobude obubonakalayo esenza i-optical wavelength multiplexing kunye nemisebenzi ye-demultiplexing. II-ONUibekwe kwi-terminal yomsebenzisi kwaye sisixhobo sokujonga i-terminal kwicala lomsebenzisi.
Kwicala elisezantsi lomlambo, amaza ahlukeneyo ahlukeneyo ld1…ldn athunyelwa kwi-OWDN emva kokuphindaphindwa kwe-OM/OD ye-ofisi esembindini, kwaye yabelwe nganyeI-ONUngokobude bamaza ahlukeneyo. Kwicala eliphezulu, abasebenzisi abahlukeneyoIi-ONUkhupha ubude bobude obuhlukeneyo lu1…lun ukuya kwi-OWDN, i-multiplex kwi-PRN ye-OWDN, kwaye emva koko idlulisele kwiOLT. Gqibezela ukuhanjiswa kwemiqondiso yamehlo phezulu nasezantsi. Phakathi kwazo, i-wavelength esezantsi yomlambo kunye ne-wavelength lun enyukayo inokusebenza kwi-waveband enye okanye amaza amaza ahlukeneyo.