Router placed on fiber optic cable

In a fiber optic internet setup, the router is located after the Optical Network Terminal (ONT), connected via an Ethernet cable.

How It Works

Fiber optic cables do not connect directly to standard home routers because the signal is transmitted as light, which routers cannot process directly . The fiber line first terminates at an Optical Network Terminal (ONT), a device provided by your Internet Service Provider (ISP). The ONT converts the incoming light signals into electrical signals that your router can use .

Physical Placement

• The ONT is typically installed near the point where the fiber enters your home, often on an interior wall, in a closet, or near a utility area .
• The router is then connected to the ONT via a high-speed Ethernet cable, usually plugged into the router's WAN or Internet port .
• For optimal Wi-Fi coverage, the router should be placed centrally within the home, away from moisture, heat sources, or obstructions .

Combined Units

In some cases, ISPs provide a combo device that functions as both the ONT and router. In this setup, the router is integrated into the same unit where the fiber terminates, simplifying installation and reducing the number of devices .

Summary

The router is always positioned after the ONT in the network chain. The fiber optic cable enters your home, connects to the ONT, which converts the optical signal to electrical, and then the router distributes the internet to your devices via Ethernet or Wi-Fi . Proper placement of both the ONT and router ensures maximum speed, reliability, and coverage.