What does multiplexing achieve in optical communication?

Multiplexing in optical communication is a technique that enables the combination of multiple signals onto a single optical fiber or transmission medium. This process is essential because it allows for efficient use of the available bandwidth by maximizing the amount of information transmitted simultaneously. In optical communication systems, multiplexing can take various forms, such as time division multiplexing (TDM) or wavelength division multiplexing (WDM).

By combining multiple signals into one, multiplexing effectively multiplies the capacity of the fiber optic system without requiring additional physical fibers. This capability is particularly important in telecommunications and data networks, where the demand for bandwidth is continuously increasing. Therefore, the ability to transmit multiple signals simultaneously through a single medium not only enhances system performance but also provides a cost-effective solution for expanding communication networks.