Fiber optic SFP transceiver CBO SFP-1G-ZX-120KM-GM-BO 1.25 Gbps LC ZX 120 km

The BlueOptics fiber optic SFP transceiver SFP-1G-ZX-120KM-GM-BO is a single‑mode module designed for long‑reach Gigabit Ethernet links. Operating at a 1.25 Gbps data rate with an LC duplex connector and ZX wavelength, it supports point‑to‑point connections over single‑mode fiber up to 120 km. The module is intended for insertion into SFP ports of switches, routers and other optical networking equipment to extend network segments across metropolitan, campus and service provider infrastructures.

Advantages

This SFP transceiver offers long reach capability with stable optical performance, enabling reliable transmission over distances up to 120 km. The LC form factor and 1.25 Gbps data rate ensure compatibility with standard Gigabit SFP ports, while the ZX wavelength provides the optical budget required for extended links. The module is compact, hot‑pluggable and suitable for mixed vendor environments when SFP interoperability is supported.

Suitable for

• Long‑reach fiber links between switches and routers in metro and campus networks
• Service provider and ISP backbone connections requiring extended range
• Point‑to‑point optical links in telecommunications and network aggregation
• Replacement or upgrade of existing single‑mode SFP ports to extend link distance

Key specifications

• Data rate: 1.25 Gbps (Gigabit Ethernet compatible)
• Fiber type: single‑mode fiber (SMF)
• Connector: LC duplex
• Wavelength: ZX (typical for long‑reach transmission)
• Maximum reach: up to 120 km (link distance dependent on fiber and margins)
• Form factor: SFP (small form‑factor pluggable), hot‑pluggable

How to use

Insert the transceiver into a compatible SFP port on a switch, router or optical device with the module keyed according to the port orientation. Connect LC duplex single‑mode fiber patch cables, ensuring correct transmit/receive alignment. Configure the network device for the appropriate port speed and duplex settings if required by the operating system. Verify link status and optical parameters via the device management interface or monitoring tools to confirm proper operation and margin levels.

Recommendations

Use single‑mode fiber compliant with ITU‑T G.652 or equivalent for optimal performance, keep LC connectors clean and protected from contamination, and ensure fiber end‑face inspection before connection. For long routes approaching the 120 km limit, verify optical power budget and consider inline amplification or dispersion management if necessary. Maintain ambient operating conditions within the equipment specifications and use proper ESD precautions when handling the module.