On August 20, researchers from SK Hynix, along with experts from institutions like the University of Virginia, published a paper in Nature Electronics. The paper systematically laid out the development roadmap for Co-Packaged Optics (CPO) technology within the high-performance computing and AI sectors. This publication marks the first instance where SK Hynix has openly shared its technical blueprint for AI interconnect architecture in a journal of such high standing.

The paper highlights that computing power has been roughly tripling every two years. However, during the same timeframe, interconnect bandwidth has only seen an approximate 1.4-fold increase. This disparity has turned the 'bandwidth wall' into a fundamental bottleneck for AI scalability. CPO technology is recognized as the crucial solution to surmount this obstacle.

The paper introduces an 'optics-centric' architecture that extends optical interconnects to memory interfaces. This innovation allows multiple AI accelerators to tap into a large-capacity memory pool, enhancing memory utilization efficiency and overcoming the constraints of physical packaging.