QSFP28 100G optical module: the best choice for data transmission?

Driven by today's digital wave, the demand for data centers and network communications continues to expand, and the demand for high-speed, high-bandwidth transmission solutions has become increasingly urgent. QSFP28 100G optical module has become one of the mainstream choices in the industry due to its excellent performance characteristics. This article will focus on three common QSFP28 100G optical modules: Qsfp28-100g-er4,Qsfp28-100g-lr4-d10,Qsfp28-100g-lr4-d20，and compare their characteristics and application scenarios.

QSFP28 100G-ER4, where "ER" stands for "Extended Reach", which means extended transmission distance, is a 100G optical module in QSFP28 format. Its main feature is that it is suitable for long-distance transmission, with a maximum transmission distance of up to 40 kilometers. Using four-channel wavelength division multiplexing technology, each channel has a transmission rate of 25Gbps. This module not only has lower power consumption, but also maintains stable signal transmission capabilities, and is suitable for data center interconnection, metropolitan area network connection and other scenarios.

In comparison, QSFP28 100G-LR4-D10 is another 100G optical module in the QSFP28 format, where "LR" stands for "Long Reach", which means long-distance transmission, and "D10" means the maximum transmission distance is 10 kilometers. Compared with ER4, although the transmission distance of LR4-D10 is shorter, it has higher integration and good compatibility. This makes it play an important role in scenarios such as internal data center connections and metropolitan area network expansion.

Another common optical module is QSFP28 100G-LR4-D20, which is similar to LR4-D10 and is also suitable for long-distance transmission, but the maximum transmission distance can reach 20 kilometers and the transmission capacity is stronger. This module is suitable for data transmission across a large geographical range, has good signal stability and anti-interference capabilities, and meets high bandwidth requirements.

When selecting QSFP28 100G optical modules, transmission distance, cost-effectiveness and reliability need to be considered comprehensively. The transmission distance determines the range of applicable scenarios for the module, cost-effectiveness requires a balance between budget and performance requirements, and reliability ensures the stability and continuity of data transmission, which is crucial for network communications. When selecting an appropriate optical module, these factors need to be weighed to meet the needs of a specific application scenario.

These optical modules provide diverse solutions for network communications. By comparing and analyzing the characteristics of different optical modules, you can better choose the optical module that suits your needs, thereby improving the efficiency and stability of network communication. The emergence and continuous improvement of QSFP28 100G optical modules has injected new vitality into the development of the network communications field, and also provided strong support for the process of the digital era.