Norwegian Co-packaged Photonics SFP

Co-packaged photonics SFP (CPO with ELSFP) integrates optical engines with switching silicon to deliver high-bandwidth, energy-efficient data links, ideal for next-generation data centers and AI infrastructure.

Overview of Co-Packaged Optics (CPO)

Co-packaged optics (CPO) is an advanced approach that integrates optical components such as photonic integrated circuits (PICs) and lasers directly alongside switching ASICs or processors within the same package . This reduces the electrical interconnect length, minimizing signal loss, latency, and power consumption compared to traditional pluggable optical modules . By moving the optical engine closer to the computation source, CPO improves signal integrity at high data rates (>1.6T) and isolates heat sources from the core electronics .

Role of External Laser SFP (ELSFP)

In CPO systems, External Laser SFPs (ELSFPs) are used as the optical signal source. The laser resides in the SFP module placed externally, while modulation occurs within the co-packaged optical engine . This configuration allows fiber connections to replace copper traces, reducing power loss and electromagnetic interference, and maintaining high-speed performance. ELSFPs are particularly important for interoperability and modular deployment, enabling easier integration with existing data center infrastructure .

Applications in AI and High-Performance Computing

CPO with ELSFP is increasingly critical for AI-driven and high-performance computing (HPC) environments, where massive data exchange between GPUs, switches, and memory systems demands high bandwidth density and energy efficiency . By integrating optics at the chip level, CPO supports low-latency, high-throughput links essential for AI clusters and hyperscale data centers .

Market and Deployment Trends

The photonics packaging market for CPO is projected to approach $5 billion by 2031, driven by AI and HPC adoption . Industry leaders such as NVIDIA, Broadcom, TSMC, and ASE are actively developing CPO architectures and integration platforms, including hybrid bonding and fiber-to-chip coupling technologies . While specific Norway deployments are not detailed, the technology is globally relevant and can be adopted in Norwegian data centers seeking next-generation optical interconnect solutions.

Key Benefits

• Higher bandwidth density and improved energy efficiency
• Reduced electrical path length, lowering latency and signal distortion
• Modular integration via ELSFP for flexible deployment
• Enhanced thermal management by isolating heat sources from core electronics
• Compatibility with AI and HPC workloads, supporting large-scale data movement Co-packaged photonics SFPs represent a transformative shift in optical interconnects, moving from module-level solutions to chip-level integration, enabling faster, more efficient, and scalable data center architectures .