Shift to Co-Packaged Optics Disrupts Market
An architectural shift toward Co-Packaged Optics (CPO) is underway to improve power efficiency and reduce latency in scale-up networks. This trend could disrupt traditional optical vendors like Coherent, Lumentum, and Cisco, whose focus has been on long-reach data center interconnects rather than the co-packaged solutions needed for modern AI infrastructure. CPO is seen as a key technology for overcoming current performance bottlenecks.
- The primary advantage of CPO is a significant reduction in power consumption—by as much as 50-70%—by shortening the electrical path between the switch chip and the optics from centimeters to millimeters. - Key industry players are already shipping or have announced CPO products; Broadcom offers its 51.2 Tbps "Bailly" CPO Ethernet switch, while NVIDIA is launching its Quantum-X and Spectrum-X Photonics switches, with commercial availability expected in 2026. - The market for co-packaged optics is forecast to grow at a compound annual growth rate (CAGR) of over 30%, with multiple analysts projecting the market to be worth hundreds of millions by 2031 and potentially over $20 billion by 2036. - Foundries are developing specialized manufacturing processes for CPO, such as TSMC's Compact Universal Photonic Engine (COUPE), which is a silicon photonics solution planned for integration with its advanced packaging technologies in 2026. - Significant technical challenges remain for widespread CPO adoption, including complex thermal management of integrated components, the high cost of advanced packaging, and the difficulty of testing and field-servicing integrated modules. - While traditional pluggable optics offer flexibility and a mature ecosystem, they face increasing power consumption and bandwidth density limitations at speeds above 800G, which CPO is designed to overcome. - The Optical Internetworking Forum (OIF) is working on industry standards, such as the 3.2T Co-Packaged Module project, to create alignment on specifications and promote interoperability for CPO solutions.
