Reconfigurable optical networks have emerged as a promising technology to efficiently serve the fast-growing traffic produced by the digital society. This paper provides a survey of the field. We first review enabling optical hardware technologies in general and then consider technologies that are specific to data center networks and wide-area networks in more detail. We further provide an overview of the cost models used in the literature as well as the algorithmic problems introduced by these technologies, their first solutions, and discuss systems and implementation aspects. We conclude with a discussion of open challenges.

中文翻译：

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可重构光网络概述

可重新配置的光网络已经成为一种有前途的技术，可以有效地服务于数字社会产生的快速增长的流量。本文提供了对该领域的调查。首先，我们首先回顾启用光学硬件的总体技术，然后更详细地考虑特定于数据中心网络和广域网的技术。我们进一步概述了文献中使用的成本模型，以及由这些技术引入的算法问题，它们的第一个解决方案，并讨论了系统和实现方面。最后，我们讨论了开放的挑战。