Selecting the appropriate transceiver module is essential for networking equipment if you want to maximize data transfer over a network. The SFP-10G-SR and SFP-10G-LR are two popular 10-Gigabit SFP+ modules.
Although they both perform comparable tasks in terms of high-speed data transfer, their surroundings and transmission distances are very different.
SFP-10G-SR:
Short-distance data transmission is the intended use for the SFP-10G-SR module. Generally speaking, it runs over multimode fiber (MMF) and can cover up to 300 meters with OM3 fiber and 400 meters with OM4 fiber. The SR is a popular option for data centers, server rooms, and other locations.
Networking devices are arranged somewhat close to one another since it is perfect for intra-building connections. A primary benefit of SR is its cost-effectiveness for short-range applications.
SFP-10G-LR:
The SFP-10G-LR (Long Range) module, on the other hand, is made for longer-distance data transmission over single-mode fiber (SMF), up to 10 kilometers. Because of this, it can be used for bigger campus networks or connections between buildings.
The LR is perfect for wide-area networks (WANs) or metro networks where networking devices are located several kilometers apart since it employs a laser to transfer data over longer distances with lower attenuation.
Conclusion
The transmission distances and fiber types of the SR and LR are the main areas of distinction between them. While the LR is intended for long-range single-mode fiber configurations, the SR is better suited for short-range multimode fiber applications.
The exact distance and fiber requirements for your network will determine which option is best for you.