The network cable connected to an optical splitter carries optical signals from the central network source to the splitter, which then distributes the signal to multiple end-users or devices.

Function in the Network

In a passive optical network (PON) or Fiber-to-the-Home (FTTH) setup, the optical splitter is a passive device that divides a single incoming optical signal into multiple outgoing signals without requiring power . The network cable connected to the splitter, often called a feeder or backbone fiber, brings the optical signal from the Optical Line Terminal (OLT) at the central office or distribution hub to the splitter . This cable ensures that the signal reaches the splitter efficiently, where it can then be distributed to multiple subscribers.

Signal Distribution

Once the optical signal reaches the splitter via the network cable, the splitter divides it according to its splitting ratio (e.g., 1:4, 1:32, 1:64), sending portions of the signal to each output fiber . These output fibers, often called distribution fibers, then carry the signal to individual Optical Network Terminals (ONTs) at homes or businesses. This setup allows a single fiber from the central office to serve multiple users, reducing the need for separate fibers for each subscriber and optimizing network resources .

Types of Splitting Configurations

• Centralized splitting: The network cable connects the OLT to a splitter located in a central distribution point, and the outputs are routed to multiple users. This allows flexible reconfiguration using jumpers .
• Cascaded or distributed splitting: The network cable connects to a primary splitter, which then feeds secondary splitters closer to end-users. This method is used in areas with dispersed users and helps manage optical loss and signal quality .

Summary

The network cable connected to an optical splitter is essential for delivering the optical signal from the central source to the splitter, enabling the splitter to distribute the signal to multiple endpoints efficiently. It forms the backbone of the PON architecture, supporting both centralized and distributed splitting strategies while optimizing fiber usage and network cost .