Low Power Optical Module OSFP

Low Power Optical (LPO) OSFP modules deliver high-speed 800G connectivity with ultra-low power consumption, reduced latency, and improved thermal efficiency for AI and HPC data centers.

Overview of OSFP Modules

The Octal Small Form-Factor Pluggable (OSFP) is a high-density optical module standard designed for next-generation data centers. OSFP modules support 400G, 800G, and emerging 1.6T speeds, offering a native 8-lane architecture that enables high bandwidth without changing the mechanical form factor. They provide a wider thermal envelope and improved airflow compared to QSFP-DD, making them ideal for AI cluster deployments and GPU-to-GPU topologies in 1RU switch configurations . OSFP modules typically support power budgets up to 60W, accommodating high-performance optics and coherent DSPs.

Low Power Optical (LPO) OSFP Modules

LPO OSFP modules are designed to address the power and latency challenges of traditional DSP-based optical modules. For example, the FS 800G LPO DR8 OSFP module operates at a maximum power consumption of 8.5W, which is roughly 50% lower than conventional 800G DSP-based modules . This reduction in power consumption:

• Lowers thermal load on switches and servers
• Reduces cooling requirements
• Improves overall energy efficiency and operational cost savings By eliminating DSP chips, LPO modules also reduce latency, making them particularly suitable for AI/ML and HPC workloads where high-speed, low-latency interconnects are critical.

Technical Features

• Data lanes: 8 lanes per direction, supporting 106.25 Gbps per lane with FEC
• Optical interface: Dual MPO-12 APC connectors for multimode fiber (OM3/OM4)
• Reach: Up to 60 m over OM3 fiber and 100 m over OM4 fiber
• Management: Fully compatible with CMIS 4.0 for digital diagnostics and monitoring
• Thermal design: Optimized for high-density switch environments with improved airflow

Advantages of LPO OSFP Modules

1. Ultra-low power consumption: Reduces energy footprint and cooling costs
2. Reduced latency: Eliminates DSP processing delays
3. High bandwidth: Supports 800G Ethernet and scalable AI/HPC interconnects
4. Thermal efficiency: Larger OSFP housing allows better heat dissipation
5. Forward compatibility: Supports future speed upgrades without mechanical redesign

Deployment Considerations

When deploying LPO OSFP modules, data center operators should consider:

• Switch and server thermal capacity
• Compatibility with existing OSFP cages and connectors
• Fiber type (OM3 vs OM4) and link distance requirements
• Management interface for monitoring power, temperature, and signal integrity LPO OSFP modules are increasingly becoming the preferred choice for AI training networks and high-performance computing clusters, offering a balance of performance, energy efficiency, and scalability .