FEATURES
Up to 1.25Gb/s Data Links
Hot-Pluggable
Single LC connector
Up to 120 km on 9/125μm SMF
1310nm DFB laser transmier
1550nm PIN photo-detector
Single +3.3V Power Supply
1.25 Gbps SM SF 120 km SC BIDI SFP Transceiver
The 1.25 Gbps SM SF 120 km SC BIDI SFP Transceiver is a cutting-edge optical transceiver module engineered for high-speed, long-distance data transmission over a single strand of single-mode fiber. Designed using BIDI (Bi-Directional) communication technology and WDM (Wavelength Division Multiplexing), it enables simultaneous data transmission and reception over a single fiber, offering a cost-effective and efficient networking solution.
This transceiver is ideally suited for Gigabit Ethernet, Fiber Channel, FTTx, and telecom backbone applications that require reliable, long-haul connectivity. With a maximum range of 120 kilometers, the transceiver is an excellent choice for large enterprise networks, metropolitan area networks (MAN), and ISP infrastructure.
Key Features
1. High-Speed Data Rate – 1.25 Gbps
This module supports 1.25 Gbps full-duplex transmission, allowing smooth and efficient data transfer for:
Gigabit Ethernet (1000BASE-BX)
Fiber Channel links
Data center interconnections
High-performance computing networks
Its fast data rate ensures minimal latency and optimal throughput in mission-critical applications.
2. Ultra-Long-Distance Coverage – Up to 120 km
One of the most notable features of this transceiver is its extended reach of up to 120 kilometers over single-mode fiber. It is designed for:
Remote monitoring systems
Telecommunication backbones
Inter-building or inter-campus connections
Rural or wide-area fiber deployments
This capability reduces the need for repeaters and additional infrastructure, cutting down on operational costs.
3. Bi-Directional Single-Fiber Transmission
Utilizing WDM technology, the module transmits and receives signals at different wavelengths over a single fiber core. Typically, the transmit (TX) wavelength is 1550 nm and the receive (RX) is 1490 nm, or vice versa depending on the model pairing.
This bidirectional design:
Saves fiber resources
Reduces cable congestion
Simplifies fiber network architecture
4. SC Simplex Connector Interface
The SC-type simplex connector offers a reliable and secure connection. Its push-pull mechanism ensures:
Quick installation
Stable performance
Easy maintenance
The SC connector is widely used in telecom and data center environments for its durability and standardized form factor.
5. Digital Diagnostic Monitoring (DDM)
This SFP transceiver supports Digital Diagnostic Monitoring (DDM), which allows real-time monitoring of:
Transceiver temperature
Supply voltage
Transmit and receive optical power
Laser bias current
These diagnostics help in proactive maintenance and enhance system reliability.
6. Hot-Pluggable SFP Design
The transceiver conforms to the SFP MSA (Multi-Source Agreement) and supports hot-plugging, allowing users to insert or remove the module without shutting down the system. This minimizes downtime and makes it convenient for quick upgrades or replacements.
7. Industry Compliance and Broad Compatibility
This transceiver is compliant with:
SFP MSA
IEEE 802.3z standards
Class 1 laser safety
RoHS directives
It is compatible with most major networking hardware brands including Cisco, Huawei, Juniper, MikroTik, Ubiquiti, and more, ensuring seamless integration into existing networks.
Technical Specifications
| Feature | Specification |
|---|---|
| Data Rate | 1.25 Gbps |
| Distance | 120 km |
| Fiber Type | Single-mode (SMF) |
| Connector Type | SC Simplex |
| Wavelength (TX/RX) | 1550 nm / 1490 nm (or vice versa) |
| DDM Support | Yes |
| Power Supply | 3.3V |
| Laser Type | DFB |
| Power Budget | Up to 30 dB |
| Temperature Range | 0°C to 70°C (Commercial) |
| Compliance | IEEE 802.3z, SFP MSA, RoHS |
Applications
Metropolitan Area Networks (MAN)
Telecom carrier networks
FTTH/FTTx systems
Long-distance data links
ISP backbone connectivity
Video surveillance over fiber
Conclusion
The 1.25 Gbps SM SF 120 km SC BIDI SFP Transceiver is a powerful and efficient solution for long-range, high-speed data transmission using a single strand of fiber. It offers a perfect balance of performance, reliability, and cost-effectiveness for a wide range of applications. Whether you’re managing a telecom backbone or building a future-proof enterprise network, this transceiver provides the speed and distance needed to keep your infrastructure connected seamlessly.
