Data centers are continually striving to meet the challenge of delivering more bandwidth, and this will require higher capacity optical switches and servers. One proposal for achieving this higher bandwidth density is to use embedded optical transceivers, which have arrays of VCSEL or silicon-photonic lasers integrated into on-board and co-packaged optics. The capacities of these transceivers are limited by the densities of the arrays, which in turn depend on the physical dimensions of the optical fibers that are coupled to the chip. This size constraint is motivating component manufacturers to consider using optical fibers with reduced cladding (RC) and coating diameters to enable higher density interconnects. In this paper, we introduce bend-insensitive single-mode and multimode RC fibers that have low attenuation, low bend loss, and are backward-compatible with the installed base of standard optical fibers. We also discuss how these RC fibers can be integrated into fiber array units to create a high-density fiber-chip connectivity solution.

中文翻译：

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用于高密度光互连的减小包层直径的光纤

数据中心不断努力应对提供更多带宽的挑战，这将需要更高容量的光交换机和服务器。实现这种更高带宽密度的一个建议是使用嵌入式光收发器，它具有集成到板载和共同封装光学器件中的 VCSEL 或硅光子激光器阵列。这些收发器的容量受到阵列密度的限制，而阵列密度又取决于耦合到芯片的光纤的物理尺寸。这种尺寸限制促使组件制造商考虑使用具有减小包层 (RC) 和涂层直径的光纤，以实现更高密度的互连。在本文中，我们介绍了对弯曲不敏感的单模和多模 RC 光纤，它们具有低衰减、低弯曲损耗、并且与标准光纤的安装基础向后兼容。我们还讨论了如何将这些 RC 光纤集成到光纤阵列单元中以创建高密度光纤芯片连接解决方​​案。