What is Wavelength-Division Multiplexing and Its Benefits?
A technical solution that permits the combination ("mux") of several separate light wavelengths (signals/channels) from different lasers on a single fiber utilizing a passive component for transmission to another site is called Wavelength-division Multiplexing (WDM ). The WDM components then demultiplex the combined wavelengths at the receiving location and route them to their appropriate receivers. The Main Components of WDM System In a WDM system, there are two different types of approaches: Dual-fiber unidirectional transmission Single-fiber bidirectional transmission The simultaneous transmission of multiple optical channels on a fiber propagating in one direction is known as dual-fiber Unidirectional WDM. There are separate wavelengths that convey different paths across an optical fiber. At the transmitting end, these signals are combined for transmission across the fiber and demultiplexed to complete multiple paths at the receiving end. It is necessary to use a s...