10G SFP Single Fiber Optical Module Overview
A 10G SFP (Small Form-factor Pluggable) Single Fiber Optical Module is a high-speed optical transceiver that enables 10 Gigabit per second data transmission over a single optical fiber strand, using Wavelength Division Multiplexing (WDM) technology. Unlike traditional dual-fiber modules, it transmits and receives data using two different wavelengths on a single fiber, significantly reducing fiber infrastructure costs.
Key Features
Data Rate: Supports up to 10 Gbps full-duplex transmission.
Wavelength: Typically uses Tx: 1270 nm / Rx: 1330 nm or vice versa.
Transmission Distance: Common variants support distances ranging from 10 km to 80 km, depending on power budget and fiber type.
Connector Type: Uses standard LC simplex connector.
Form Factor: Complies with SFP+ MSA (Multi-Source Agreement).
Hot-swappable: Can be inserted or removed without shutting down the system.
Working Principle
The module uses Bi-Directional (BiDi) WDM technology to operate on a single fiber. Two paired modules are required—each transmitting and receiving on complementary wavelengths. For example:
Module A: Tx at 1270 nm, Rx at 1330 nm
Module B: Tx at 1330 nm, Rx at 1270 nm
This pairing ensures that signals in opposite directions do not interfere.
Applications
FTTx (Fiber to the x) deployments
Data centers
Enterprise campus networks
Metropolitan Area Networks (MAN)
Telecom backbone and access networks
Carrier-grade Ethernet
Advantages
Reduced Fiber Usage: Only one fiber strand is needed for bi-directional communication, halving fiber costs.
Compact Size: Fits standard SFP+ slots, enabling high port density.
Energy Efficient: Low power consumption design for optimized thermal performance.
Cost-effective: Saves on fiber infrastructure and port utilization.
Compatibility: Interoperable with standard network switches and routers that support SFP+.
Selection Considerations
When choosing a 10G SFP Single Fiber Module, consider:
Wavelength pairing for Tx/Rx compatibility
Reach requirement (e.g., 10 km, 20 km, 40 km, 80 km)
Optical budget based on attenuation and dispersion
Switch/router compatibility
Operating temperature range (commercial vs. industrial grade)
Common Variants
ModelTx WavelengthRx WavelengthDistanceConnector10G-BIDI-101270 nm1330 nm10 kmLC simplex10G-BIDI-201270 nm1330 nm20 kmLC simplex10G-BIDI-401270 nm1330 nm40 kmLC simplex10G-BIDI-801270 nm1330 nm80 kmLC simplex
Note: The counterpart module must be installed at the far end to enable correct wavelength pairing.
Conclusion
The 10G SFP Single Fiber Optical Module is an efficient and space-saving solution for high-speed optical transmission, especially where fiber availability is limited. Its bi-directional WDM technology makes it ideal for modern networks that demand bandwidth, scalability, and cost-effectiveness.