What is the role of an optical coupler in a fiber-optic network?

In a fiber-optic network, the role of an optical coupler is to split an optical signal into multiple paths. This function is vital for managing and distributing the light signals that carry data through the fiber. By splitting the signal, an optical coupler allows a single fiber to connect to multiple fibers, enabling communication with multiple endpoints while maintaining signal integrity.

Optical couplers often use elements such as beam splitters or fiber splitting technologies to achieve this task. They can be essential in applications where a single source of light needs to be directed to several receivers or lines, thus optimizing the use of existing infrastructure without the need for individual light sources for each connection.

Amplification of signals, conversion of signals, or serving as a network hub are not primary functions of optical couplers. Amplifiers, for instance, serve to boost the power of a light signal over long distances, while conversion of signals typically involves electronic components rather than optical couplers. Similarly, a network hub is a physical device used in networking to connect multiple lines of communication, which is distinct from the role of an optical coupler in managing light signals.