Introduction to High-speed and Short-range 40G QSFP+ SR4

Why Is the Demand of QSFP+ SR4 Increasing?

As human beings enter the Internet era, the amount of data generated by human beings has exploded, and the amount of information transmission and exchange is increasing day by day, making people’s requirements for communication networks higher and higher. Optical fiber communication, with its advantages of high bandwidth, low loss, and strong anti-electromagnetic interference ability, meets people’s increasing demand for communication network, so it is widely used in backbone communication network. For the backbone communication network, it is required to increase the transmission distance and transmission capacity as much as possible, and at the same time reduce the relay equipment and maintenance costs as much as possible, and improve the reliability of the communication system. However, with the development of the times, people have higher and higher requirements for information transmission and storage, and there are many high-speed and short-distance transmission requirements. Especially in recent years, with the emergence of cloud computing technology and the advent of the era of big data, it has brought about a rapid increase in data throughput and a large-scale construction boom of data centers. Major IT companies, Internet companies, and telecommunications companies are also supporting their own business. From the point of view of seizing market opportunities, it actively invests in the competition of cloud technology development, which brings a series of short-distance, high-speed interconnection.

We know that a data center is composed of multiple different network elements, including computing servers, storage, routers, switches, etc., and these network elements are basically interconnected over short distances. The speed of these short-distance interconnections has become higher and higher with the increasing data throughput, and the transmission rate of 10Gbps and 40Gbps has been widely used, and the short-distance interconnection of 100Gbps has also been put into use.

In recent years, many data centers have begun to use servers, routers, and switches with 40Gbps/100Gbps interfaces, which has greatly promoted the development of 40G QSFP+ SR4 high-speed short-distance modules.

Performance and Specification of QSFP+ SR4

The 40G QSFP+ SR4 optical module adopts the QSFP+ package type, that is, a four-channel small and hot-swappable optical module with a transmission rate of 40Gbps. It has four independent transmit and receive optical signal channels, and each channel can support 10Gbps data transmission. The 40G QSFP+ SR4 optical module complies with the QSFP+ MSA and IEEE 802.3ba 40GBASE-SR4 Ethernet standards, and the transmission distance through OM3/OM4 multimode fiber can reach up to 100m or 150m. It is mainly used in routers, switches, and host adapter buses. The QSFP+ SR4 optical module adopts the MTP/MPO dual-channel network transmission interface design. Only with different connection products, the QSFP+ SR4 optical module can be connected to other devices in various ways in different applications.


QSFPTEK 40G QSFP+ SR4 Transceiver


QSFPTEK provides customers with one-stop optical network devices and low-cost optical communication products through proprietary designs and supplies a series of SR4 optical module products. For more details, please visit the QSFPTEK official website(