What is the main functionality of a fiber optic splitter?

The main functionality of a fiber optic splitter is to divide a single optical signal into multiple outputs. This device is essential in fiber optic communications as it allows a single source of light, such as an optical transmitter, to be distributed to multiple fibers or endpoints. This capability is particularly important in network architectures where the same signal needs to be sent to several locations without needing multiple transmitters.

Fiber optic splitters serve various applications, including passive optical networks (PONs), where they help efficiently distribute bandwidth to multiple users in a cost-effective manner. By using splitters, one optical signal can be shared among many devices, thus maximizing the infrastructure's utility without needing additional links back to the source.

The other choices, while related to fiber optics, do not accurately describe the primary role of a fiber optic splitter. Converting optical signals into electrical signals, providing redundancy in transmission, or amplifying signals involves different types of equipment or technologies that serve distinct functions within a fiber optic system. This highlights the unique purpose of splitters in facilitating the distribution of optical signals rather than processing or modifying them.