Optical fiber communication technology is crucial for efficient information transmission, significantly enhancing data transmission speeds. Optical modules, a vital component of this technology, play a key role. Among the parameters associated with optical modules, common ones include SFP-10G-SR and SFP-10G-LR. When making a purchase decision, it’s pivotal for you to understand the difference between SFP-10G-SR and SFP-10G-LR before choosing products.
What are the SFP-10G-SR and SFP-10G-LR
SFP refers to hot-pluggable small form factor modules. 10G represents its maximum transmission rate of 10.3 Gbps, which is suitable for 10 Gigabit Ethernet. SR and LR represent the transmission distance of the SFP 10g module.
SFP-10G-SR
SFP-10G-SR is designed for short-distance transmission, typically up to 300 meters over multimode fiber. Using 850 nm wavelength laser and LC bidirectional connector, it is easy to plug and install. The module supports hot-swappable function, which can be safely replaced while the device is running, with stable performance and reliability. In data center networks, SFP-10G-SR is often used for connections between servers to support high-speed data transmission. It is also suitable for enterprise network environments, especially in scenarios with high network performance requirements.
SFP-10G-LR
The SFP-10G-LR is specifically engineered for medium to long-distance transmissions, typically spanning 10 to 40 kilometers over single-mode fiber. Boasting a 1310nm wavelength laser and an LC bidirectional connector, it facilitates effortless and smooth installation. The compatibility of SFP-10G-LR with single-mode optical fiber makes it an ideal solution for fulfilling communication needs in medium to long-distance scenarios, including establishing connections between remote offices. Furthermore, it proves well-suited for constructing network backbones, enabling high-speed data transmission among diverse network devices.
Differences Between SFP-10G-SR and SFP-10G-LR
Transmission Distance: The primary distinction lies in their coverage range, with SFP-10G-SR for short distances and SFP-10G-LR for longer ones.
Fiber Compatibility: SFP-10G-SR works with multimode fiber, while SFP-10G-LR requires single-mode fiber.
Use Cases: SFP-10G-SR is optimal for intra-building connections, while SFP-10G-LR is suitable for inter-building or even metropolitan-area connections.
Wavelength: The SFP-10G-SR uses a laser with a wavelength of 850 nanometers, while the SFP-10G-LR uses a laser with a wavelength of 1310 nanometers.
How to Choose the Right Module
After understanding the difference between SFP-10G-SR and SFP-10G-LR, we will start from typical application scenarios, combining them with your network requirements, to provide guidance on selecting the appropriate SFP 10G optical module for you.
Data Center
When linking servers, storage devices, or network components within the data center, opt for SFP-10G-SR for short-distance connections like in-rack setups. For cross-rack connectivity, SFP-10G-LR is the best choice.
Intra-Enterprise Network
Establishing high-speed connections within the enterprise, such as inter-floor or inter-department links, demands tailored choices. For shorter intra-floor connections, select SFP-10G-SR. Opt for SFP-10G-LR when spanning different floors.
Remote Office/Branch Office
For network connections linking remote or branch offices with the headquarters, SFP-10G-LR is the preferred module due to its suitability for longer distances, ensuring coverage for remote locations.
Inter-City Data Transmission
When establishing high-speed data connections between cities, the preferred choice is SFP-10G-LR, thanks to its compatibility with longer fiber distances, addressing the needs of inter-city connections.
Budget Constraints
If facing budget limitations and the connection distance permits, SFP-10G-SR is generally the more economical option.
Unlocking the Potential of the SFP 10g module with FS Products
The burgeoning era of digitization has spurred a growing demand for optical modules across various sectors, including enterprise networks, data centers, campus networks, and metropolitan area networks. Building on the diverse applications of optical modules, as a premier network solutions provider, FS.COM offers a diverse range of hot-swappable SFP 10G modules designed to maximize uptime and streamline serviceability. Equipped with Digital Optical Monitoring (DDM) capabilities, each unit is meticulously customized and coded for full-function compatibility. FS products undergo rigorous testing and verification to ensure the seamless and reliable operation of your network.
The following table sorts out the products of these two models (SFP-10G-SR and SFP-10G-LR) on the FS. You can choose the most suitable one according to your needs.
| Model | SFP-10G-SR | SFP-10G-LR |
| Data Rate (Max) | 10.3125Gbps | 10.3125Gbps |
| Wavelength | 850nm | 1310nm |
| Cable Distance (Max) | 300m@OM3400m@OM4 | 10km |
| Connector | Duplex LC | Duplex LC |
| Transmitter Type | VCSEL | DFB |
| Cable Type | MMF | SMF |
| TX Power | -7.3~-1dBm | -8.2~0.5dBm |
| Receiver Sensitivity | < -11.1dBm | <-14.4dBm |
| Power Consumption | <1W | ≤1W |
| Operating Temperature | 0 to 70°C (32 to 158°F) | 0 to 70°C (32 to 158°F) |
| Application Range | Only used for short distance connections | Only used for long distance connections |
Conclusion
In short, which product to choose ultimately depends on your network layout and connectivity needs. The above considerations can help you quickly select the right product to achieve the best performance in your specific network environment. If you would like to learn about other types of SFP 10g modules, you can visit the following resources for more information.
Related resource: Other models of SFP 10g modules