An optical access network plays a critical role in accommodating explosive new services such as augmented reality (AR), virtual reality (VR), machine-to-machine, and human-to-machine interaction applications. Continuous expansion of capacity as well as low latency in the optical access network are very important issues to avoid loss of connectivity for 5G and Tactile Internet. A time-division multiplexing passive optical network (TDM-PON) is an attractive solution to provide optical connectivity to end users in residential, business, and mobile applications since multiple remote nodes with simple optical power splitters give us easy-to-use optical connection anywhere in an optical distributed network. This article reviews TDM-PON-based optical access technologies for bandwidth-intensive as well as low-latency services, and introduces a recent feasibility demonstration of a Tactile Internet testbed. Technical challenges faced by TDM-PON for future networks in terms of capacity, latency, and virtual-izationlslicing are also discussed.

中文翻译：

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用于触觉互联网、5G 等的基于 TDM-PON 的光接入网络

光接入网络在适应爆炸性的新服务方面发挥着关键作用，例如增强现实 (AR)、虚拟现实 (VR)、机器对机器和人机交互应用。光接入网络中容量的持续扩展以及低延迟是避免 5G 和触觉互联网连接丢失的非常重要的问题。时分复用无源光网络 (TDM-PON) 是一种有吸引力的解决方案，可为住宅、商业和移动应用中的最终用户提供光连接，因为具有简单光功率分配器的多个远程节点为我们提供了易于使用的光连接在光分布式网络的任何地方。本文回顾了用于带宽密集型和低延迟服务的基于 TDM-PON 的光接入技术，并介绍了触觉互联网测试平台最近的可行性演示。还讨论了 TDM-PON 在容量、延迟和虚拟化切片方面面临的未来网络技术挑战。