Wave Division Multiplexing (WDM)

Wave Division Multiplexing (WDM)

Wave Division Multiplexing (WDM)

Wave Division Multiplexing (WDM) is an analog multiplexing technique to combine optical signals. Wave Division Multiplexing (WDM) is conceptually the same as Frequency Division Multiplexing (FDM),except that the multiplexing and demultiplexing involve optical signals transmitted through fiber-optic channels.The idea is the same:We are combining different signals of different frequencies.However,the difference is that the frequencies are very high.

                           

Application of WDM

 SONET network : Multiple optical fiber lines are multiplexed and demultiplexed