WDM PON bụ netwọk ngwa anya na-agafe agafe na-eji teknụzụ multiplexing nkewa ogologo ogologo. Ya bụ, n'otu eriri ahụ, ọnụ ọgụgụ nke wavelengths eji na abụọ ntụziaka bụ karịa 3, na ojiji nke wavelength nkewa multiplexing technology iji nweta uplink ohere nwere ike inye ukwuu na-arụ ọrụ bandwit na ọnụ ala, nke bụ ihe dị mkpa mmepe ntụziaka maka. ọdịnihu Optical fiber access. Sistemu WDM PON na-ahụkarị nwere akụkụ atọ: Terminal Line Line (OLT), Optical Wavelength Distribution Network (OWDN) na Optical Network Unit (ONU: Ngalaba netwọk anya), dị ka egosiri na foto 1.OLTbụ akụrụngwa ụlọ ọrụ etiti, gụnyere nkewa wavelength optical multiplexer/demultiplexer (OM/OD). N'ozuzu, ọ nwere ọrụ dịka njikwa, mgbanwe na njikwa. Enwere ike ikewapụ OM/OD nke ụlọ ọrụ etiti na nke ahụOLTakụrụngwa. OWDN na-ezo aka na netwọk anya dị n'etitiOLTna nkeONU, na-aghọta na wavelength nkesa siOLTkaONUma ọ bụ site naONUkaOLT. Njikọ anụ ahụ na-agụnye eriri feeder na ọnụ ebe dịpụrụ adịpụ (PRN: Passive Remote Node). PRN na-agụnyekarị grating na-enweghị mmetụta na-enweghị mmetụta (AAWG: Athermal Arrayed Waveguide Grating). AAWG bụ ngwa anya na-agafe agafe na-enwe mmetụta nke na-arụ ọrụ multiplexing na demultiplexing. NkeONUetinyere n'ọnụ onye ọrụ ma bụrụ ngwaọrụ ọnụ anya n'akụkụ onye ọrụ.
N'ebe mgbada ala, a na-ebufe ọtụtụ wavelengths ld1… ldn na OWDN mgbe ọtụtụ OM/OD nke ụlọ ọrụ etiti gasịrị, a na-ekenye ya onye ọ bụla.ONUdị ka dị iche iche wavelengths. Na ụzọ mgbago elu, onye ọrụ dị iche icheONUna-ebunye ogologo wavelength ngwa anya dị iche iche lu1… n'ọnwa gaa na OWDN, multiplex na PRN nke OWDN, wee bunye ya naOLT. Mezue mgbasa ozi anya na mgbago elu na mgbada. N'ime ha, ldn wavelength nke mgbada na oke ikuku nke elu nwere ike ịrụ ọrụ n'otu eriri ma ọ bụ eriri ebili mmiri dị iche iche.