What does a tree coupler do in a fiber optic system?

In a fiber optic system, a tree coupler serves the primary function of distributing optical power from one input to multiple outputs, which aligns perfectly with the choice identified. This type of coupler enables the signal from a single source (like a laser or other light source) to be split into several paths, allowing for effective branching of the signal to multiple destinations, which can be particularly useful in a network where a single signal needs to reach multiple endpoints.

Tree couplers are designed to efficiently manage the splitting of light while minimizing signal loss, making them critical components for maintaining fidelity in optical communications. In practical applications, this can include scenarios such as telecommunications networks, where one optical line may need to serve several users or devices.

The other options describe different functionalities that do not apply to a tree coupler. For example, providing light check continuity is not a function of a coupler; rather, that pertains to a different type of optical device or test equipment. Combining multiple inputs into a single output is characteristic of a different kind of device, known as a combiner or a multiplexer, rather than a splitter like a tree coupler. Testing fiber lengths and losses involves different tools and techniques, such as an Optical Time-Domain Reflectometer (OT