PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
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analog multiplexing technique to combine optical signals
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WDM
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TDM
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FDM
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AM
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Explanation:
Detailed explanation-1: -Wavelength-division multiplexing (WDM) is a multiplexing technique to combine optical signals. In WDM, the available fiber-optic transmission channel is shared by a number of different light sources. WDM is conceptually quite similar to FDM.
Detailed explanation-2: -Dense wavelength-division multiplexing (DWDM) is an optical fiber multiplexing technology that is used to increase the bandwidth of existing fiber networks. It combines data signals from different sources over a single pair of optical fiber, while maintaining complete separation of the data streams.
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