The Differences between 10G SFP+ SR and 10G SFP+ LR Modules

There are many types of 10G optical modules, but the most classic and earliest are 10G SFP+ SR and 10G SFP+ LR. Both can transmit 10G Ethernet speeds, providing a stable, low-latency, and low-power network environment. However, their usage environments and the protocol specifications they follow differ significantly. Today, we'll discuss these common network devices: 10G SFP+SR and 10G SFP+LR.

1.Comparison of Key Parameters between 10G SFP+SR and 10G SFP+LR Optical Modules

1.1 10G SFP+SR Optical Module

The 10G SFP+SR optical module uses a miniaturized SFP+ package and transmits at a rate of 10Gbps. The SR in the name stands for "short range." It uses a short-wavelength 850nm and, when paired with OM3 fiber, can achieve a transmission distance of 300m, meeting the 10GBase-SR protocol standard.

1.2 10G SFP+LR Optical Module

The 10G SFP+LR optical module uses a miniaturized SFP+ package and transmits at a rate of 10Gbps. The LR in the name stands for "long range." It uses a long-wavelength 1310nm and, when paired with standard OS2 fiber, can achieve a transmission distance of 10KM, meeting the 10GBase-LR protocol standard.

2. Differences in Application Scenarios between 10G SFP+SR and 10G SFP+LR Optical Modules

2.1 Short-Distance Application Scenarios

In short-distance applications, such as within data centers or in FTTR smart home networks, 10G SFP+SR is the ideal choice. It utilizes mature VCSEL laser technology, offering stable performance, and uses OM3 fiber for transmission. In short-distance transmission, it boasts advantages such as low cost, low power consumption, and ease of maintenance, making it ideal for use in data centers.

2.2 Long-Distance Application Scenarios

In long-distance applications, such as connections between adjacent campuses or between data centers, 10G SFP+LR is the ideal choice. It uses DFB lasers for high stability over long distances. Although its cost is higher than SR transceivers, the standard OS2 fiber used for long-distance transmission is inexpensive, resulting in a low overall cost. In long-distance transmission, it offers advantages such as low cost, low power consumption, and ease of maintenance, making it ideal for long-distance environments such as cross-campus and cross-building applications, and highly suitable for high-speed interconnection between campuses.

3.Summary

This article should have given you a deep understanding of the differences between 10G SFP+SR and 10G SFP+LR, enabling you to choose the right one for various practical applications. For short-distance use cases, choose 10G SFP+SR; for long-distance use cases, choose 10G SFP+LR. By combining them appropriately, you can build an efficient and low-cost network to meet diverse network needs. YXFiber, a professional one-stop network provider, offers a wide range of optical communication products to safeguard your network and is the ideal choice for building new networks.