A Dual Fiber Gigabit Panel uses two fiber strands—one for transmitting (TX) and one for receiving (RX)—to support high-speed Gigabit Ethernet connections over short or long distances.

Overview

Dual-fiber panels and SFP transceivers operate using two separate fiber strands, with one dedicated to sending data and the other to receiving it, ensuring full-duplex communication . This setup is common in both multi-mode (MMF) and single-mode (SMF) fiber networks, supporting standard Gigabit Ethernet rates (1000Base-SX/LX) and extending distances from hundreds of meters to tens of kilometers depending on the fiber type and wavelength .

Key Specifications

• Fiber Type: Multi-mode (50/125 µm or 62.5/125 µm) for short-range, single-mode (9/125 µm) for long-range connections .
• Wavelengths: Common values include 850 nm for MMF (SX), 1310 nm for SMF (LX/LHX), and 1550 nm for long-haul SMF (ZX/ZHX), .
• Distance: Multi-mode typically covers 155 m to 550 m, while single-mode can reach 20 km, 40 km, 50 km, or 80 km depending on the SFP standard .
• Connector Type: Duplex LC connectors are standard for dual-fiber panels .
• Transmission Rate: Supports 1 Gbps for standard Gigabit Ethernet, with some models supporting 10 Gbps for higher-end applications .

Applications

Dual-fiber Gigabit panels are widely used in:

• Data centers for connecting switches and servers over fiber backbones.
• Enterprise networks to extend network coverage between buildings.
• Surveillance systems where reliable, high-speed connections are required.
• Industrial environments with EMI concerns, as fiber is immune to electromagnetic interference .

Deployment Considerations

• Cross-connection: TX on one end connects to RX on the other and vice versa using duplex patch cords .
• Environmental factors: Check for industrial temperature ranges, DIN-rail mounting, and power requirements. Some media converters support PoE passthrough .
• Maintenance: Clean connectors to prevent signal loss; even small dust particles can increase attenuation .
• Plug-and-play: Many dual-fiber media converters support auto-negotiation and jumbo frames up to 9K bytes for seamless integration .

Example Products

• SFP-7000-85: 1000Base-SX multi-mode, 850 nm, up to 550 m.
• SFP-7020-31: 1000Base-LX single-mode, 1310 nm, up to 20 km.
• SFP-7040-31: 1000Base-LHX single-mode, 1310 nm, up to 40 km.
• SFP-7050-55: 1000Base-ZX single-mode, 1550 nm, up to 50 km . Dual-fiber Gigabit panels provide a reliable, high-speed, and scalable solution for extending Ethernet networks over fiber, making them ideal for both short-range and long-haul deployments.