Detroit, MI, 04/01/2026 – By Yasha Yi 1,2 and Danny Wilkerson 3
1 Intelligent Optoelectronics Laboratory and Connected Systems Institute, University of Wisconsin, Milwaukee
2 Microsystems Technology Laboratory, Massachusetts Institute of Technology, Cambridge
3 Invictus Innovation EV Technology
Abstract
The rapid growth of AI and accelerator-driven workloads is forcing a fundamental rethinking of optical interconnect architectures in datacenters. Co-packaged optics and three-dimensional photonic integration have emerged as promising solutions to overcome the energy and bandwidth limitations of electrical I/O. Yet, as optics move closer to compute, packaging, thermal management, and system-level robustness increasingly dominate performance and scalability. Here, we argue that co-packaged optics should not be viewed as a component-level optimization, but as an architectural commitment that reshapes the boundaries between photonics, electronics, and system design. We examine how heterogeneous integration strategies, chiplet-based optics, and emerging packaging platforms redefine scaling laws for AI systems, often introducing trade-offs that are underappreciated in device-centric analyses. Looking forward, we discuss why standardization, serviceability, and thermal-aware co-design will be decisive in determining whether co-packaged optics can transition from early deployment to widespread adoption in AI-scale datacenters.
Chiplet Marketplace
Full Article: https://chiplet-marketplace.com/library/article/3d-optoelectronics-and-co-packaged-optics-when-solving-the-wrong-problems-stalls-deployment