How are optical splitters used in the forward path?

Optical splitters serve a critical role in fiber optic networks, particularly in the forward path, by acting as passive branching devices. Their primary function is to take a single input optical signal and distribute it across multiple output fibers without the need for additional power or signal amplification. This characteristic enables efficient utilization of the optical signal, allowing it to reach multiple destinations simultaneously.

In this context, the use of splitters is essential for applications where signals need to be sent from a central point to multiple locations, such as in fiber-to-the-home (FTTH) deployments. By effectively dividing the optical signal while maintaining its integrity, these devices ensure that various endpoints can receive the data without requiring a direct fiber connection to the source.

The other options presented do not accurately represent the role of optical splitters in the forward path: they do not amplify signals, do not inherently reduce the number of fibers in a network, and are not specifically designed to link single-mode and multi-mode fibers. Thus, the identification of optical splitters as passive branching devices underscores their fundamental function in managing the distribution of optical signals within a network infrastructure.