800G OSFP Close Top 2SR4 100m Optical Transceiver

The 800G OSFP Close Top 2SR4 100m Optical Transceiver is designed for high-speed Ethernet and InfiniBand NDR networks. It supports 8x100G PAM4 signaling, uses VCSEL transmitter arrays and PIN photodetector arrays, and provides up to 100m transmission over OM4 multimode fiber.

1. What Is the 800G OSFP Close Top 2SR4?

The 800G OSFP Close Top 2SR4 is an 800Gb/s optical transceiver designed for high-bandwidth data center and AI networking. It uses an OSFP form factor and an 8-channel 100G PAM4 architecture.

800G OSFP Close Top 2SR4 data-sheet

2. Key Features

• 800Gb/s aggregate data rate

• 8x100G PAM4 retimed interface

• 800GAUI-8 electrical interface

• Supports 800G Ethernet and InfiniBand NDR

• VCSEL transmitter arrays

• PIN photodetector arrays

• Dual MPO-12 APC optical interface

• Up to 60m on OM3 and 100m on OM4

• Hot-pluggable OSFP form factor

• Power consumption below 16W

3. 800G 2SR4 Optical Architecture

The 2SR4 architecture provides an 800G optical connection based on multiple short-reach multimode optical lanes. It is intended for high-density data center interconnects where short-reach bandwidth and compact cabling are important.

4. 8x100G PAM4 Technology

The transceiver uses eight 100G PAM4 lanes to achieve an aggregate 800Gb/s data rate. Each lane operates at 53.125 GBd and uses PAM4 modulation for high-speed optical transmission.

5. 800GAUI-8 Electrical Interface

The host-side electrical interface is based on 800GAUI-8. Eight high-speed electrical lanes connect the host system to the optical transceiver, supporting the 800G data path.

6. VCSEL Transmitter

The transmitter uses an 8-channel VCSEL array with a typical center wavelength around 860nm. VCSEL technology is well suited to short-reach multimode fiber applications and high-density data center connectivity.

7. PIN Photodetector Receiver

The receiver uses an 8-channel PIN photodetector array to convert incoming optical signals into electrical signals. The architecture is optimized for high-speed short-reach optical links.

8. Dual MPO-12 APC Connector

The optical interface uses dual MPO-12 APC connectors. The multi-fiber interface provides a compact connection for the multiple optical lanes required by 800G transmission.

9. 100m Transmission over OM4

The module supports a maximum link length of 100m over OM4 multimode fiber. This makes it suitable for short-reach connections between servers, switches, and accelerators in modern data centers.

10. OM3 and OM4 Reach

11. Ethernet and InfiniBand NDR Support

The 800G 2SR4 supports both 800G Ethernet and InfiniBand NDR applications. This allows the same optical platform to address different high-performance data center and AI cluster architectures.

12. Optical Specifications

13. Transmitter Performance

The specified average launch power is -1dBm to 4dBm per lane. The transmitter supports PAM4 operation with a maximum TDECQ of 4.4dB and a maximum TECQ of 4.4dB.

14. Receiver Performance

The receiver supports an average receive power range of -6.4dBm to 4dBm per lane. The stressed receiver sensitivity is specified at -2dBm under the defined test conditions.

15. OSFP Form Factor

The module uses a hot-pluggable OSFP form factor and complies with the OSFP Module Specification Rev 5.0. The Close Top design is intended for high-density optical networking environments.

16. Low Power Consumption

Power consumption is specified at less than 16W across the 0°C to 70°C operating temperature range. Power efficiency is particularly important in high-density 800G data center deployments.

17. Standards and Compliance

The transceiver complies with IEEE 802.3db and IEEE 802.3ck and supports OSFP MSA Rev 5.0 and CMIS 5.2. These specifications provide a standardized framework for host integration and module management.

18. Operating Temperature

The module is designed for a 0°C to 70°C operating temperature range, making it suitable for controlled data center, AI cluster, and high-performance computing environments.

19. 800G 2SR4 vs 800G SR8

20. Applications

21. Advantages of the 800G 2SR4

The 800G 2SR4 combines 800Gb/s bandwidth, PAM4 signaling, multimode fiber connectivity, dual MPO-12 APC interfaces, and support for both Ethernet and InfiniBand NDR. It provides a practical short-reach solution for high-density data center networks.

22. Why Use 800G 2SR4 for AI Networks?

AI clusters require high-bandwidth communication between GPUs, switches, and other computing resources. The 800G 2SR4 provides an 800Gb/s optical interface optimized for short-reach multimode fiber connections in these high-throughput environments.

23. High-Density Data Center Connectivity

With a compact OSFP form factor and dual MPO-12 APC optical interface, the module is suitable for dense rack environments where multiple 800G connections must be deployed within limited space.

24. Module Management and Monitoring

CMIS 5.2 support provides a standardized management interface for supported host systems. This enables module identification, monitoring, and configuration functions during deployment and operation.

25. Conclusion

The 800G OSFP Close Top 2SR4 100m Optical Transceiver is a high-speed short-reach solution for modern data center and AI networks. With 8x100G PAM4, VCSEL and PIN technology, dual MPO-12 APC connectivity, and support for 100m over OM4, it is designed for high-density 800G Ethernet and InfiniBand NDR applications.

26. FAQ