Yes, Gigabit Ethernet can be used with fiber optic routers, as most modern fiber routers include 1 Gigabit LAN ports for wired connections.

Compatibility Overview

Fiber optic routers receive internet via a fiber connection, often through a Fiber Jack or Optical Network Terminal (ONT). These routers typically provide Gigabit Ethernet (1G) LAN ports to connect devices like PCs, gaming consoles, or smart TVs using standard Ethernet cables (Cat5e, Cat6, or higher) to achieve speeds up to 1 Gbps . This means that even though the internet enters your home via fiber, your devices can still use wired Gigabit Ethernet connections for reliable, high-speed access.

Router Examples and Features

• NETGEAR Nighthawk RS700: Offers one 10G port and four 1G ports, supporting gigabit and multi-gigabit connections over Ethernet .
• TP-Link AC1900 (Archer A8): Includes 4 Gigabit LAN ports and 1 Gigabit WAN port, ideal for connecting multiple devices via Ethernet while using fiber internet .
• GFiber Multi-Gig Router: Provides three yellow Gigabit Ethernet ports and a 10G port, allowing wired connections up to 1 Gbps or higher depending on the plan .

Practical Considerations

• Ethernet Cable Type: To achieve full Gigabit speeds, use Cat5e or Cat6 cables. Cat6 or Cat7 cables are recommended for future-proofing and multi-gigabit setups .
• Port Selection: Connect devices to the LAN ports on the router. The WAN port is used to connect the router to the fiber ONT.
• Performance: Wired Gigabit connections are generally more stable and faster than Wi-Fi, especially in environments with multiple devices or high bandwidth usage .

Summary

In short, fiber optic routers are fully compatible with Gigabit Ethernet connections. You can connect your devices using standard Ethernet cables to the router's LAN ports and enjoy high-speed, low-latency internet, even though the internet itself is delivered via fiber optics. This setup is common in homes and offices to maximize speed and reliability while leveraging fiber broadband.