Description: A wavelength-selective switch is an optical device that routes different wavelengths of light to various outputs. This type of switch is fundamental in optical communication systems, where multiple signals must be transmitted over a single medium, such as optical fiber. The ability to select and direct specific wavelengths allows for more efficient use of the light spectrum, thereby optimizing data transmission capacity. Wavelength-selective switches are essential for implementing wavelength division multiplexing (WDM), a technique that enables multiple signals to be sent simultaneously over a single optical fiber. These devices can be mechanical or based on microelectronic technology, and their design can range from simple configurations to complex systems that integrate multiple switching and control functions. Their relevance in modern telecommunications infrastructure is significant, as they facilitate network expansion and enhance service quality in data transmission.
