What router should I use for a 1 kilometer fiber optic connection

For a 1-kilometer fiber optic link, you need enterprise-grade routers or switches with SFP/SFP+ ports and compatible single-mode fiber transceivers, rather than typical home Wi-Fi routers.Key ConsiderationsFiber Type and TransceiversFor distances around 1 km, single-mode fiber (SMF) is recommended because it supports long-distance transmission without significant signal loss.Use SFP (1 Gbps) or SFP+ (10 Gbps) modules compatible with your router or switch. Modules like 1000BASE-LX or 10GBASE-LR are designed for 1 km+ SMF links.Router or Switch SelectionEnterprise or carrier-grade routers with SFP/SFP+ ports are required. Examples include:Ubiquiti EdgeRouter Infinity (supports multiple SFP+ ports for long-distance fiber)MikroTik CCR series (Cloud Core Routers with SFP/SFP+ slots)Cisco Catalyst or ISR series (with fiber modules for 1 km links)These devices can handle high-speed fiber connections and provide routing, VLANs, and QoS for stable performance.Media Converters (Optional)If your router lacks SFP ports, you can use fiber-to-Ethernet media converters to connect standard Ethernet routers to the fiber link. Ensure the converter supports single-mode fiber and the required distance.Power and Environmental ConsiderationsFor outdoor fiber runs, ensure the equipment is housed in weatherproof enclosures if needed.Use fiber patch cables rated for outdoor or indoor/outdoor use depending on installation.PerformanceEnsure the router or switch supports the bandwidth of your fiber connection. For example, a 1 Gbps fiber link requires at least 1 Gbps SFP modules and ports; for 10 Gbps, SFP+ modules are necessary.Enterprise routers also provide redundancy, VLAN segmentation, and security features that are important for long-distance links.Summary RecommendationFor a 1 km fiber optic connection, typical home routers like the Netgear Nighthawk RS700S or ASUS ROG GT-AX11000 are not suitable, as they are designed for indoor Wi-Fi coverage and short Ethernet runs . Instead, choose:Router/Switch with SFP/SFP+ ports (Ubiquiti, MikroTik, Cisco)Single-mode fiber transceivers (1000BASE-LX for 1 Gbps, 10GBASE-LR for 10 Gbps)Optional media converters if using standard Ethernet routers This setup ensures reliable, high-speed connectivity over 1 kilometer while maintaining signal integrity and network performance.