Extend Your 10GbE Network with Bi-Directional SFP+ Fiber Transceiver (Up to 40km) SFP-10G-BX20

Overview

Transform your network infrastructure with the 10G Bi-Directional (BiDi) SFP+ Fiber Transceiver (SFP-10G-BX20). Designed for high-speed enterprise and data center environments, this module delivers 10 Gbps Ethernet connectivity up to a distance of 20 kilometers using just a single strand of Single Mode Fiber (SMF).

By leveraging Wavelength Division Multiplexing (WDM) technology, the SFP-10G-BX20 allows you to transmit and receive data simultaneously on different wavelengths (typically 1270nm and 1330nm). This effectively doubles the capacity of your existing fiber plant, making it the ideal choice for expanding bandwidth without the heavy cost of laying new fiber cables.

Key Features

• High Bandwidth: Supports 10.3125 Gbps data rates (10GBASE-BX).
• Distance: Reach up to 20km on 9/125µm Single Mode Fiber.
• Single Fiber Operation: Bi-Directional communication via a single Simplex LC connector.
• Wavelengths: Tx 1270nm / Rx 1330nm (Downstream) or Tx 1330nm / Rx 1270nm (Upstream).
• DDM/DOM Support: Real-time monitoring of optical power, temperature, and voltage.
• Energy Efficient: Low power consumption (< 1.5W).

Applications

The SFP-10G-BX20 is versatile and robust, suitable for various demanding scenarios:

• Data Center Interconnects: Connecting server halls or aggregation switches within large campuses.
• Enterprise Core Networks: High-speed uplinks between building distribution switches.
• ISP Metro Access: Delivering 10G residential or business services over limited fiber resources.
• 5G & Telecom: Front-haul and back-haul connections for cellular base stations.

Specifications

Cross-Platform Compatibility

This 10G BiDi SFP+ is engineered to fully comply with the SFF-8431 and SFF-8472 MSA standards, guaranteeing seamless operation with major networking brands, including:

Advantages

Implementing the SFP-10G-BX20 dramatically reduces cabling infrastructure costs. In scenarios where leasing dark fiber is expensive, using BiDi technology immediately cuts your fiber rental requirements by 50%. Additionally, the 20km reach provides a flexible middle-ground coverage that exceeds standard 10km (LR) modules, ensuring reliable links even across sprawling facilities.

FAQ (Technical & Product Questions)

1. What is the difference between SFP-10G-BX20-U and SFP-10G-BX20-D?

These refer to the “Upstream” and “Downstream” sides of the link. The “U” side typically transmits at 1270nm and receives at 1330nm, while the “D” side transmits at 1330nm and receives at 1270nm. You need one of each to form a working link.

2. Can I connect this BiDi module to a standard dual-fiber SFP+ module?

No. Standard SFP+ modules (like SFP-10G-LR) use two fibers (one for Tx, one for Rx) and usually operate on the same wavelength (e.g., 1310nm) for both directions. BiDi modules use different wavelengths for Tx and Rx on a single fiber, so they are not compatible with standard dual-fiber optics.

3. Does this module support auto-negotiation to 1G?

SFP+ modules generally run at a fixed 10Gbps rate. While some switches allow forcing the port speed to 1G, the SFP+ module itself is optimized for 10G. If you need 1G speeds, it is recommended to use a native 1G BiDi SFP module.

4. Is an attenuator required for short distances?

For the 20km model, the transmit power is typically not high enough to damage the receiver on very short links (e.g., 2-3 meters), unlike 40km or 80km modules. However, it is always good practice to check optical power levels via DDM to ensure the Rx power is within the safe range (-1 to -14 dBm).

5. What kind of cable do I need?

You need a Single Mode Fiber (SMF) OS2 patch cable with a Simplex LC connector. The polish type (UPC vs APC) should match what the module receptacle is designed for (standard SFP+ modules use UPC/Blue connectors).