WDM PON bụ netwọk 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.Usoro WDM PON na-ahụkarị nwere akụkụ atọ: Optical Line Terminal (OLT), Optical Wavelength Distribution Network (OWDN) na Optical Network Unit (ONU: Optical Network Unit), dị ka egosiri na Figure 1. OLT bụ ngwá ọrụ ụlọ ọrụ etiti, gụnyere. Optical wavelength division multiplexer/demultiplexer (OM/OD).N'ozuzu, ọ nwere ọrụ dịka njikwa, mgbanwe na njikwa.Enwere ike kewapụ OM/OD nke ụlọ ọrụ etiti na akụrụngwa OLT.OWDN na-ezo aka na netwọk anya dị n'etiti OLT na ONU, wee chọpụta nkesa ogologo ogologo site na OLT gaa na ONU ma ọ bụ site na ONU gaa na OLT.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.A na-edobe ONU n'ọnụ ọnụ onye ọrụ ma bụrụ ngwaọrụ ọnụ anya n'akụkụ onye ọrụ.
N'akụkụ mgbada ala, a na-ebufe ọtụtụ ogologo wavelengths ld1… ldn na OWDN mgbe ọtụtụ OM/OD nke ụlọ ọrụ etiti gasịrị, a na-ekenye ya ONU ọ bụla dịka ogologo ogologo ogologo dị iche iche si dị.N'ebe mgbago elu, ndị ọrụ ONU dị iche iche na-ebunye ogologo ebili mmiri anya dị iche iche lu1…un gaa na OWDN, multiplex na PRN nke OWDN, wee bufee na OLT.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.