100Gbe QSFP Strength and Applications


In the rapidly evolving world of networking, the demand for higher data transfer speeds continues to grow. To meet this demand, the 100GbE QSFP28 (Quad Small Form-factor Pluggable) transceiver has emerged as a powerful solution. With its numerous advantages and wide range of applications, the 100GbE QSFP28 is revolutionizing the way data is transmitted across networks.

SFP to QSFP to QSFP28 – Transceiver Development

The development of transceivers has undergone a remarkable evolution, progressing from Small Form-factor Pluggable (SFP) to QSFP and ultimately to QSFP28. This transition has ushered in significant advancements in data transfer capabilities, empowering networks with higher speeds and increased bandwidth to meet the ever-growing demands of modern applications.

SFP (Small Form-factor Pluggable) transceivers were the initial standard for compact optical modules, primarily used for Gigabit Ethernet applications. These compact transceivers supported data rates of up to 1.25 Gbps and were suitable for short-distance transmissions over multimode fibers. SFP modules quickly gained popularity due to their flexibility, ease of installation, and hot-swappable design.

As the need for higher data transfer speeds emerged, the industry responded with the development of QSFP (Quad Small Form-factor Pluggable) transceivers. QSFP modules introduced a significant leap in performance, offering four times the data capacity of their SFP predecessors. They were capable of supporting data rates of up to 40 Gbps and provided compatibility with various Ethernet and Fibre Channel protocols. However, the demand for even higher speeds and greater bandwidth continued to escalate, leading to the emergence of QSFP28 transceivers. QSFP28 represents the latest standard in transceiver technology, supporting data rates of up to 100 Gbps. By doubling the data capacity of its predecessor, QSFP28 enables network operators to achieve greater efficiency and scalability in their data transmission.

100Gb QSFP28 – What are the Advantages?

100g qsfp28 transceiver

Low Cost per Gbps Traffic: The 100Gb QSFP28 offers a cost-effective solution for high-speed data transmission. With its ability to handle large volumes of traffic, it minimizes the cost per Gbps, making it an efficient choice for network scalability.

High Density: QSFP28’s compact form factor enables high port density, allowing network operators to maximize the utilization of their network infrastructure. This feature is particularly beneficial in data center environments where space is limited.

Fiber Cable Savings: By utilizing the 100Gb QSFP28 transceiver, network operators can save on fiber cabling costs. QSFP28 supports breakout cables, enabling the transmission of multiple lower-speed signals simultaneously over a single fiber, thereby reducing the number of cables required.

100GbE QSFP28 – How to Use It?

The 100GbE QSFP28 transceiver finds application in various network scenarios, including:

Multimode Optical Fiber Wiring between Switches (up to 100m): For short-range connections within data centers, the 100G SR4 variant of QSFP28 is used. It supports multimode fiber connections and is ideal for high-speed communication between switches within a short distance.

Single Mode Optical Fiber Wiring between Switches (100m-2km): When the distance between switches exceeds 100 meters but remains within 2 kilometers, the 100G CWDM4 variant is employed. It enables high-speed transmission over single-mode fiber and is commonly used for interconnecting switches in different sections of a data center.

Long-Range Single Mode Fiber (up to 10km): When the transmission distance extends up to 10 kilometers, the 100G LR4 variant of QSFP28 is utilized. This transceiver allows for reliable long-haul transmission over single-mode fiber, making it suitable for connecting switches across larger network infrastructures.

Long Haul (40km-80km): For even greater transmission distances, the 100G ER4 and 100G ZR4 variants of QSFP28 are deployed. These transceivers are designed to handle long-haul connections, such as those required for metropolitan and regional networks.

Where to Buy Cost-Effective 100G SFP?

When considering the purchase of cost-effective 100G SFP transceivers, QSFPTek offers a range of reliable and high-quality products. QSFPTek’s 100G QSFP series provides a cost-effective solution without compromising on compatibility or performance. With competitive prices and a commitment to customer satisfaction, QSFPTek is a trusted source for acquiring cost-effective 100G SFP transceivers.


The 100GbE QSFP28 transceiver has become an integral component of modern network infrastructure, offering significant advantages such as low cost per Gbps traffic, high port density, and fiber cable savings. Its versatility allows it to be deployed in various network applications, ranging from short-range data center connections to long-haul transmissions. As the demand for high-speed data transfer continues to rise, the 100GbE QSFP28 is poised to play a crucial role in meeting these requirements efficiently and effectively.


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