Gigabit Single-Mode Fiber SFP modules provide 1Gbps connectivity over long distances using single-mode fiber, with options for standard, BiDi, and industrial-grade models.

Cisco Single-Mode SFP Modules

Cisco offers a range of single-mode SFPs for Gigabit Ethernet, including:

• GLC-BX40-D-I / GLC-BX40-DA-I / GLC-BX40-U-I: Operate on a single strand of standard single-mode fiber (SMF) with distances up to 40 km. Transmission is achieved by separating wavelengths for upstream and downstream communication .
• GLC-2BX-D / GLC-2BX-D-I: 2-channel SFP modules connecting to two 1000BASE-BX10-U interfaces over two single strands of SMF, supporting distances up to 10 km. Industrial versions support -40°C to 85°C operation .
• 1000BASE-LX/LH and 1000BASE-EX: Standard single-mode SFPs for distances ranging from 10 km to 40 km depending on the model and fiber type .

Lanshack Single-Mode SFP Modules

Lanshack provides high-performance single-mode SFP transceivers:

• 1.25G Singlemode SFP with LC Duplex: Hot-pluggable, suitable for distances up to 2 km at 1310 nm.
• 1.25G Singlemode BiDi SFP with LC Simplex: Supports distances up to 20 km using a single fiber with two wavelengths (1310/1550 nm), compatible with Cisco devices .

Ubiquiti Single-Mode SFP Modules

Ubiquiti offers single-mode SFPs for long-distance connections:

• UF-SM-1G: Supports 1 Gbps over single-mode fiber up to 3 km.
• BiDi models: Must be deployed in pairs, using two wavelengths on a single fiber for upstream and downstream communication .

Key Features Across Models

• Hot-pluggable SFP form factor for easy installation and replacement .
• Wavelength options: Typically 1310 nm or 1550 nm for single-mode fiber.
• Connector types: LC Duplex or LC Simplex depending on standard or BiDi modules.
• Industrial-grade options: Support extended temperature ranges for harsh environments.
• Compatibility: Many modules are Cisco-compatible and interoperable with other standard-based networking equipment .

Choosing the Right Module

• Distance requirements: Select modules based on the maximum link distance (e.g., 2 km, 10 km, 40 km, or longer).
• Fiber type: Ensure the module matches single-mode fiber specifications.
• Deployment environment: Consider industrial-grade modules for extreme temperatures.
• BiDi vs standard: Use BiDi modules to reduce fiber usage by transmitting upstream and downstream on a single strand. These Gigabit Single-Mode SFP modules are widely used in enterprise, campus, and industrial networks for reliable long-distance connectivity while maintaining flexibility and compatibility with existing infrastructure .