Kev faib cov teeb liab optical wavelength multiplexing yog ib txoj kev siv tshuab uas xa cov teeb liab optical ntau-wavelength hauv ib lub fiber optical. Lub hauv paus ntsiab lus yog los muab cov teeb liab optical ntawm ntau qhov wavelengths sib txawv ntawm qhov kawg xa, txuas lawv rau tib lub fiber optical ntawm kab optical cable rau kev xa, thiab cais (demultiplex) cov teeb liab optical ntawm cov wavelengths sib xyaw ua ke ntawm qhov kawg tau txais. , thiab ua tiav ntxiv, cov teeb liab qub raug rov qab thiab xa mus rau ntau qhov chaw sib txawv.
WDM wavelength division multiplexing tsis yog lub tswv yim tshiab. Thaum pib ntawm kev sib txuas lus fiber ntau optical, tib neeg paub tias qhov bandwidth loj ntawm optical fiber tuaj yeem siv rau wavelength multiplexing kis, tab sis ua ntej xyoo 1990, tsis muaj kev tawg loj hauv cov thev naus laus zis no. Kev txhim kho sai Los ntawm 155Mbit / s txog 622Mbit / s txog 2.5Gbit / s System TDM tus nqi tau nce plaub npaug hauv ob peb xyoos dhau los Tib neeg tsis tshua them sai rau lwm yam thev naus laus zis thaum ib qho thev naus laus zis mus sai Nyob ib puag ncig xyoo 1995 Ib qho laj thawj tseem ceeb rau qhov tig ntawm kev txhim kho ntawm WDM system yog tias tib neeg ntsib teeb meem hauv TDM 10Gbit / s thev naus laus zis thaum lub sijhawm ntawd, thiab ntau lub qhov muag tsom mus rau multiplexing thiab ua cov teeb liab optical. Tsuas yog tom qab ntawd WDM system muaj ntau yam kev siv thoob ntiaj teb. .
Lub sijhawm tshaj tawm: Lub Rau Hli-20-2022