I-WDM PON iyinethiwekhi ye-point-to-point passive passive esebenzisa ubuchwepheshe be-wavelength division multiplexing.Okusho ukuthi, ku-fiber efanayo, inani lamaza amaza asetshenziswa kuzo zombili izinkomba lingaphezu kuka-3, futhi ukusetshenziswa kobuchwepheshe be-wavelength division multiplexing ukuze kuzuzwe ukufinyelela kwe-uplink kunganikeza umkhawulokudonsa omkhulu wokusebenza ngezindleko eziphansi, okuyisiqondiso esibalulekile sokuthuthukiswa ukufinyelela kwe-Optical fiber esikhathini esizayo.Uhlelo olujwayelekile lwe-WDM PON luqukethe izingxenye ezintathu: I-Optical Line Terminal (OLT), i-Optical Wavelength Distribution Network (OWDN) kanye ne-Optical Network Unit (ONU: Optical Network Unit), njengoba kuboniswe kuMfanekiso 1. I-OLT iyimishini yehhovisi emaphakathi, okuhlanganisa i-optical wavelength division multiplexer/demultiplexer (OM/OD).Ngokuvamile, inemisebenzi efana nokulawula, ukushintshanisa, nokuphatha.I-OM/OD yehhovisi elimaphakathi ingahlukaniswa ngokoqobo nempahla ye-OLT.I-OWDN ibhekisela kunethiwekhi yokubona etholakala phakathi kwe-OLT ne-ONU, futhi ibona ukusatshalaliswa kwe-wavelength ukusuka ku-OLT kuya ku-ONU noma ukusuka ku-ONU kuya ku-OLT.Isixhumanisi esibonakalayo sifaka i-fiber feeder kanye ne-passive node eyihlane (PRN: Passive Remote Node).I-PRN ikakhulukazi ihlanganisa i-waveguide grating engezwani ne-thermal (AAWG: I-Athermal Arrayed Waveguide Grating).I-AAWG iyidivayisi ye-wavelength-sensitive passive passive device eyenza i-optical wavelength multiplexing kanye nemisebenzi ye-demultiplexing.I-ONU ibekwe kutheminali yomsebenzisi futhi iyisisetshenziswa esibonakalayo esisohlangothini lomsebenzisi.
Ngaphansi komfula, amaza amaza ahlukene amaningi ld1…ldn adluliselwa ku-OWDN ngemva kokuphindwaphindwa kwe-OM/OD kwehhovisi elimaphakathi, futhi abelwe i-ONU ngayinye ngokuya ngamaza ahlukene.Uma ubheka phezulu nomfula, abasebenzisi abahlukene be-ONU bakhipha amaza amaza okukhanya ahlukene lu1…lun ukuya ku-OWDN, i-multiplex ku-PRN ye-OWDN, bese idlulisela ku-OLT.Qedela ukudluliswa komfula nokwehla nomfula kwamasignali okubona.Phakathi kwazo, i-downstream wavelength ldn kanye ne-wavelength lun ekhuphukayo ingasebenza ngebhande legagasi elifanayo noma amabhande amaza ahlukene.