Benefits of Co-packaged Optics

Co-packaged optics (CPO) enhances data center performance by reducing power consumption, increasing bandwidth, lowering latency, and enabling scalable, high-density interconnects.

Power Efficiency

CPO significantly reduces energy consumption by placing optical components, such as lasers and photodetectors, directly adjacent to electronic components like switch ASICs. This proximity shortens electrical paths from inches to millimeters, eliminating the need for power-hungry DSP retimers and reducing link power by up to 70% compared to traditional pluggable transceivers (e.g., from 30 W to 9 W) . Lower power usage not only cuts operational costs but also supports sustainability goals in large-scale data centers .

Increased Bandwidth and Performance

By integrating optics with electronics, CPO enables higher data rates and bandwidth densities that pluggable optics cannot achieve. Silicon photonics and advanced 2.5D/3D packaging allow SerDes lanes to operate at 200 Gbit/s or more, supporting multi-terabit switches (up to 102.4 Tb/s) . The shorter electrical paths improve signal integrity, reduce insertion loss, and minimize latency, which is critical for AI workloads and high-performance computing .

Scalability and System Design

CPO allows data centers to scale efficiently by connecting multiple nodes at high bandwidths while maintaining low latency. The co-optimization of electrical, optical, thermal, and packaging design ensures reliable, manufacturable systems capable of handling future data demands, including AI and HPC applications . This architecture supports dense integration, enabling more data to be transmitted in smaller physical spaces .

Latency Reduction

Shortening the distance between optical and electrical components reduces the need for signal equalization and retiming, which lowers communication latency. This is particularly beneficial for tightly coupled AI clusters and distributed computing systems where thousands of processors exchange data continuously .

Summary

In essence, co-packaged optics provides energy-efficient, high-bandwidth, low-latency, and scalable interconnects for modern data centers and AI infrastructure. By integrating optical and electronic components within the same package, CPO addresses the limitations of traditional pluggable optics, enabling next-generation performance and sustainability .