What occurs in the WDM process?

The Wavelength Division Multiplexing (WDM) process is designed to efficiently combine and transmit multiple data streams over a single optical fiber by using different wavelengths (or colors) of light for each stream. In this process, the optical output from multiple lasers, each operating at distinct wavelengths, is combined into one composite signal. This allows for the simultaneous transmission of multiple channels of information over the same fiber, significantly increasing the capacity of the fiber optic network.

By utilizing different laser wavelengths, WDM enables the sharing of the same physical medium without interference, thereby maximizing the efficiency and bandwidth of the fiber optic system. Optical fibers can carry numerous channels of data, which is crucial for high-bandwidth applications and is widely used in telecommunications to enhance data transmission capabilities.