1.6T optical modules are critical components in data centers, cloud computing, and high-speed network infrastructures, supporting a significant leap in data transmission rates. Currently, the 1.6T optical modules on the market mainly rely on advanced modulation technologies, such as PAM4 (4-Level Pulse Amplitude Modulation) or multi-mode fiber multiplexing techniques, to achieve ultra-high-speed data transmission. These modules are designed with a focus on low power consumption, high density, and effective heat dissipation, meeting the requirements of high-density cabling and energy-saving, emission-reduction in data centers.
At present, pluggable optical modules remain the mainstream choice for the 1.6T stage due to their advantages in high density, high bandwidth, and ease of maintenance. At the same time, new technological approaches such as CPO (Co-Packaged Optics), LPO (Linear-drive Pluggable Optics), and silicon photonics are rapidly developing, offering potential for further optimization of optical modules in the future.
As a pioneer in optical networking, NADDOD unveiled the industry-leading 1.6T XDR InfiniBand Module in early 2025, advancing the boundaries of speed, efficiency, and scalability in next-generation networks. Featured the 200G-PAM4 optical DSP—Marvell 3nm DSP, or Broadcom 5nm DSP, NADDOD OSFP-1.6T-2xDR4 delivers high-speed data processing with low latency and high accuracy. In addition, the 1.6T SiPh module uses NADDOD's self-developed silicon optical chip, with a high-speed operation of 200G per channel to ensure rapid transmission of AI massive data, significantly reducing the time required for AI model training and inference. Read Focusing AI Frontiers: NADDOD Unveils 1.6T InfiniBand XDR Silicon Photonics Transceiver to learn more features and benefits about the NADDOD 1.6T SiPh module.
Following the highly anticipated launch of NVIDIA Quantum-X800 InfiniBand switches, NADDOD quickly completed rigorous compatiblity testing for its 1.6T InfiniBand module. The results demonstrate exceptional compatibility and low BER, again proving the reliablity of NADDOD’s optical interconnect products in AI infrastructure.
NVIDIA Quantum-X800 Q3400-RA Switch
The NVIDIA Quantum-X800 Q3400-RA 4U switch, the first to leverage 200Gb/s-SerDes technology, significantly enhances network performance and bandwidth. It features 144 ports at 800Gb/s distributed across 72 OSFP cages. The switch’s high radix supports a two-level, fat-tree topology capable of connecting up to 10,368 network NICs with minimal latency and optimal job locality, as well as other topologies providing connectivity to tens of thousands of GPUs. The Q3400-RA is an air-cooled system compatible with standard 19-inch rack cabinets.
The 4U switch systems are ideal for HPC and AI workloads, leveraging the cutting-edge NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP)™, alongside enhanced adaptive routing and performance isolation technologies. With this powerful combination, they deliver unparalleled performance for handling the most demanding tasks in HPC and AI domains.
NADDOD Test on the NVIDIA Q3400-RA Switch
Test the compatiblity of OSFP-1.6T-2xDR4H transceiver on NVIDIA Q3400-RA switch.
Test Environment:
- Test device：NVIDIA Quantum-X800 XDR Switch
- Model：Q3400-RA
- Firmware Version：25.02.3000
- Test Method：Loopback Test
（Switch Infomation）
Test Result:
The BER result is based on the Broadcom 5nm DSP
In the loopback test, NADDOD OSFP-1.6T-2xDR4H module (featuring Broadcom’s 5nm DSP) connected normally and operates stably on the NVIDIA Q3400-RA switch. In the RS_FEC(544, 514) test, the BER reached 6E-9, which ensures the data integrity of the AI clusters and improves the computation efficiency and model stability. The stable compatibility provides an efficient, low-latency interconnection solution between the 10,000 GPUs cluster devices, maximizing the performance of the AI computing power cluster.
Conclusion
As a core component of data centers and smart computing centers, 1.6T optical modules are rapidly transitioning from the technology validation stage to the scale commercialization stage. In the future, as the demand for AI computing power continues to grow and technology dvances, 1.6T modules will be further developed in the direction of high density, low power consumption and low cost, providing stronger support for global data centers and network infrastructures. NADDOD 1.6T XDR InfiniBand Silicon Photonics Modules have already been tested on Quantum-X800 Q3400-RA switch, demonstrating excellent compatibility and BER. From adapter cards to switches, to transceivers and AOC/DAC cables, NADDOD provides end-to-end Infiniband networking solutions for high-speed connection, accelarating the AI infrastructures. Connect with our AI network experts today and empower your business with cutting-edge solutions!
800GBASE-2xSR4 OSFP PAM4 850nm 50m MMF Module
