What is ROADM?
The reconfigurable optical add-drop multiplexer or ROADM is a device that is utilized on many different fiber optic networks. Essentially, this type of multiplexer has the ability to control the direction and focus of both infrared and visible light emissions within a range of different wavelengths. The technology of ROADM makes it unnecessary to convert these emissions into electrical signals that must be converted back into their original form at the point of termination. ROADM is often utilized with any system that makes use of wavelength division multiplexing or WDM. The basics of ROADM are relatively straightforward. Three operations take place within the operating process of this type of optical add-drop multiplexer. These functions are known as add, drop, and cut-through. The visible or infrared light outgoing signal that is generated constitutes the add function on the multiplexer. At the same time, the ability to terminate the reception of an incoming infrared or visible light
