What Is 400G SR4?

In the rapidly evolving world of optical networking, the development of new technologies continues to push the boundaries of data transmission. One of the most significant advancements in recent years is the introduction of 400G SR4 transceivers. These devices have not only expanded the possibilities for short-reach optical communications but also set the stage for the eventual transition to 800G. This article delves into what 400G SR4 transceivers are, their significance in the networking world, and how they are shaping the future of data transmission.

Understanding FS 400G SR4 Transceivers

FS 400G SR4 transceivers are optical modules designed to support 400 gigabits per second (Gbps) data rates over short distances. The "SR" stands for "Short Reach," and the "4" denotes that the transceiver uses four optical channels, each capable of transmitting 100 Gbps. These transceivers leverage parallel optics technology, which transmits data across multiple fibers simultaneously, generally support transmission distances of up to 100 meters on OM4 multi-mode fiber and 30 meters on OM3 multi-mode fiber, which are ideal for data center environments where short-range connectivity is crucial. This approach enables higher data rates and lower latency compared to traditional serial transmission methods.

Technological Advancements of 400G SR4 Transceivers

FS provides a variety of 400G SR4 optical modules in multiple form factors, including OSFP, QSFP112, and QSFP-DD. The OSFP (octal small form factor pluggable) is a type of transceiver that connects a network device, such as a switch, to fiber or copper cable, which consists of 8 electrical lanes, running at 50Gb/s each, for a total of the bandwidth of 400Gb/s. It can split a 400G signal into four 100G signals or combine four 100G signals into a single 400G signal.

The QSFP112 form factor, commonly referred to as the 'Finned' transceiver, adheres to the type 2 physical specification of the OSFP MSA. Its distinctive feature is the heat sink, which can either expose fins or have a smooth top. Unlike traditional OSFP transceivers, it uses a 4x112G configuration on the host, making it suitable for use in the switching levels of HPC and ML clusters for greater efficiency and flexibility. It also supports specialized 2x200G or 2x100G breakouts. QSFP112 ports maintain backward compatibility with QSFP56 and QSFP28 transceivers.

Focusing on QSFP-DD, particularly the QSFP56-DD (QSFP-DD) SR4, it is notable for providing 400G SR4 compatibility with 56G SerDes QSFP-DD switches. Much like the traditional 400G DR4 interface, this transceiver includes a DSP and gearbox for smooth retiming between four optical lanes and eight lanes at the host, ensuring superior performance across various networking environments.

An important factor for all 400G SR4 transceiver users is the transition to a lower back reflectance optical connector, the MPO-12/APC. These modules use MPO (Multi-fiber Push-On) or MTP (Mechanical Transfer Push-On) connectors, which facilitate the connection of multiple fibers in a single connector, simplifying cable management and reducing installation complexity.

Understanding Key Features and Benefits of FS 400G SR4 Transceivers

Key Features of FS 400G SR4 Transceivers

The FS 400G SR4 transceivers boast a range of key features that make them a compelling choice for optical networking applications. These advanced transceivers offer:

• 1. High Data Rate: The FS 400G SR4 transceivers deliver impressive speeds and bandwidth capabilities, enabling data transmission at 400Gbps. This high-speed performance ensures efficient and reliable connectivity for demanding network environments.

• 2. Compact Form Factor: Designed with space optimization in mind, the FS 400G SR4 transceivers adhere to the QSFP-DD (Quad Small Form-factor Pluggable - Double Density) and QSFP112 standards, allowing for easy integration into various network devices and equipment, ensuring compatibility with various network equipment. Their small size facilitates efficient utilization of rack space and enables flexible deployment options.

• 3. Multi-mode Fiber Support: These transceivers are compatible with multi-mode fiber (MMF), making them ideal for short-reach applications. They support distances of up to 100 meters over OM4 fiber and 30 meters over OM3 fiber, providing flexible connectivity options for data centers and enterprise networks.

• 4. Low Power Consumption: FS 400G SR4 transceivers are engineered to deliver improved power efficiency, typically consuming only 8W, which helps reduce energy consumption and operational costs. Their optimized design ensures efficient heat dissipation, contributing to overall system reliability and longevity.

• 5. Hot-swappable: The hot-swappable feature of FS 400G SR4 transceivers allows for easy installation and replacement without disrupting network operations. This plug-and-play capability simplifies maintenance tasks and minimizes downtime.

• 6. Reliable Performance: Built with high-quality components and rigorous testing, FS 400G SR4 transceivers offer reliable and stable performance. They are designed to meet industry standards and specifications, ensuring seamless interoperability with a wide range of network equipment.

Benefits of FS 400G SR4 Transceivers in Data Centers

Data centers are the backbone of modern digital infrastructure, supporting everything from cloud computing to social media. As data volumes continue to grow exponentially, the need for faster and more efficient data transmission becomes ever more critical. This is where 400G SR4 transceivers play a pivotal role.

• 1. Increased Bandwidth: With 400 Gbps of bandwidth, these transceivers significantly increase the data transmission capabilities of data centers. This is essential for handling the growing demands of applications such as video streaming, virtual reality, and big data analytics.

• 2. Future-ready Scalability: With 400G as the current standard and support for backward compatibility, FS 400G SR4 transceivers provide a future-ready solution for network scalability. They lay the foundation for seamless migration to higher data rates, such as 800G, ensuring long-term investment protection.

• 3. Energy Efficiency: Modern 400G SR4 transceivers are designed to be energy-efficient, reducing the overall power consumption of data center operations. This is not only cost-effective but also aligns with the increasing focus on sustainability in the tech industry.

FS 400G SR4 Transceivers Product Lists

The FS 400G SR4 Transceiver is a cutting-edge optical module designed for high-bandwidth data center applications, featuring a data rate of 400Gbps through four parallel multimode fiber channels. It supports distances of up to 100 meters over OM3 fiber, 70 meters over OM4 fiber, and 150 meters over OM5 fiber, operating at an 850nm wavelength with a typical power consumption of just 8W. With a QSFP-DD form factor and an MPO-12 connector, this transceiver ensures broad compatibility with mainstream switches and routers. Its key selling points include high-speed performance, energy-efficient design, and easy installation and maintenance, making it a versatile and reliable solution for modern data centers and high-performance computing networks.

Conclusion

400G SR4 transceivers represent a significant advancement in the field of optical networking. They offer increased bandwidth, scalability, and energy efficiency, making them a valuable asset for modern data centers. As technology continues to evolve, the role of 400G SR4 transceivers in shaping the future of data transmission cannot be overstated. By understanding and embracing these cutting-edge developments, organizations can stay ahead of the curve and ensure their digital infrastructure is ready to meet the demands of tomorrow.