Which end of the fiber optic cable should be connected to the router

The fiber optic cable in a home network ends at the Optical Network Terminal (ONT), which converts the light signal into an electrical signal for the router.Optical Network Terminal (ONT)

The fiber optic cable does not connect directly to a standard home router because the router cannot interpret optical signals. Instead, the fiber line terminates at an Optical Network Terminal (ONT), typically provided and installed by your internet service provider (ISP) inside your home, often near the point where the fiber enters the building, such as an interior wall or closet . The ONT's main function is optoelectronic conversion, translating the incoming light signals from the fiber into standard electrical signals that your router and other devices can use .

Connection to the Router

Once the ONT converts the signal, it outputs data through a standard Ethernet port. A Cat6 or higher Ethernet cable is then used to connect the ONT to the router's WAN or Internet port, which is often labeled and sometimes color-coded for easy identification . This setup allows the router to distribute internet access to your devices via Wi-Fi or wired connections.

Installation Considerations

• Power: Both the ONT and router require continuous power, so they should be placed near electrical outlets, ideally with surge protection .
• Environment: Keep the devices in a dry, well-ventilated area away from moisture or extreme temperatures .
• Handling Fiber: The fiber connector is sensitive; handle it by the plastic housing and avoid touching the glass tip . In some cases, ISPs provide a combo device that integrates the ONT and router into a single unit, eliminating the need for a separate Ethernet connection . However, in most home setups, the fiber ends at the ONT, which then connects to a separate router to manage your home network.