What is the role of a multiplexer in WDM?

WDM systems use a multiplexer at the transmitter to connect multiple signals together and a demultiplexer at the receiver to separate them. With the right type of fiber, it's possible to have a device that does both, and can function as an optical add/drop multiplexer.

What is a fiber optic multiplexer?

A multiplexer (or multiplexer) is a device that selects one of several analog or digital input signals. A fiber optic multiplexer is a device that accepts a single input signal and selects one of many data output lines that connect to the single input

What is WDM in Communication?

Wavelength Division Multiplexing (WDM) is a technique that multiplexes multiple optical carrier signals through a single fiber channel by changing the wavelength of laser light. WDM allows communication in both directions in fiber optic cables

What is the meaning of DWDM?

Dense Wavelength Division Multiplexing (DWDM) is an optical multiplexing technique used to increase the bandwidth of existing fiber optic networks.

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