The articles in this special section focus on optical interconnects. These papers present the most recent developments in this field with extensiveness and depth, while ensuring the inclusion of the highest quality work. Large-scale data centers and high-performance computers (HPC) are becoming increasingly limited by the capacity of interconnects due to the rapidly increasing power consumption and bandwidth demands. As a result of the continuing bandwidth scaling, optical interconnects (OI) have been implemented at ever decreasing communication distances to replace electrical interconnects. Over the past decade, core switches and routers in data centers and HPC systems have adopted fiber optics to deliver the I/O performance between racks in multi-chassis configurations. Meanwhile, the further penetration of OI into shorter distances, such as the board and chip levels, poses new challenges on photonic integrated circuits (PICs) for continued performance and cost scaling and further requires innovations in integration and packaging.

中文翻译：

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客座社论：光互连特刊

此特殊部分中的文章侧重于光互连。这些论文广泛而深入地介绍了该领域的最新发展，同时确保包含最高质量的工作。由于快速增长的功耗和带宽需求，大型数据中心和高性能计算机 (HPC) 越来越受到互连容量的限制。作为持续带宽缩放的结果，光互连（OI）已经在不断减小的通信距离中实现以取代电互连。在过去十年中，数据中心和 HPC 系统中的核心交换机和路由器已采用光纤在多机箱配置的机架之间提供 I/O 性能。同时，OI进一步​​渗透到更短的距离，