I-Optical wavelength division multiplexing ubuchwepheshe obudlulisela izimpawu ze-optical ze-multi-wavelength ku-fiber eyodwa ye-optical. Isimiso esiyisisekelo ukuhlanganisa izimpawu ze-optical (eziningi) zama-wavelength ahlukene ekugcineni kokudlulisa, ukuzihlanganisa ne-optical fiber efanayo emgqeni wekhebula le-optical ukuze zidluliselwe, bese zihlukaniswa (demultiplex) izimpawu ze-optical zama-wavelength ahlanganisiwe ekugcineni kokwamukela. , bese kucutshungulwa kabanzi, isignali yokuqala iyabuyiswa futhi ithunyelwe kuma-terminal ahlukene.
Ukwehlukaniswa kwe-wavelength ye-WDM akuwona umqondo omusha. Ekuqaleni kokuvela kokuxhumana kwe-optical fiber, abantu baqaphela ukuthi i-bandwidth enkulu ye-optical fiber ingasetshenziswa ekudlulisweni kwe-wavelength multiplexing, kodwa ngaphambi kweminyaka yama-1990, akukho ntuthuko enkulu kulobu buchwepheshe. Intuthuko esheshayo Kusukela ku-155Mbit/s kuya ku-622Mbit/s kuya ku-2.5Gbit/s Uhlelo Izinga le-TDM liye landa kane eminyakeni embalwa edlule Abantu abavamile ukunaka obunye ubuchwepheshe lapho ubuchwepheshe obuthile buhamba ngokushesha Cishe ngo-1995 Isizathu esibalulekile sokuguquka ekuthuthukisweni kohlelo lwe-WDM ukuthi abantu babhekane nezinkinga kubuchwepheshe be-TDM 10Gbit/s ngaleso sikhathi, futhi amehlo amaningi agxile ekuhlanganisweni nasekucutshungulweni kwezimpawu ze-optical. Kulapho kuphela lapho uhlelo lwe-WDM lwaba nohlu olubanzi lwezinhlelo zokusebenza emhlabeni jikelele. .
Isikhathi sokuthunyelwe: Juni-20-2022