Abstract:  Interconnection network is one of the core components of high-performance computing systems and data centers, and it is also a global infrastructure that determines the overall performance of the systems. With the rapid development of high-performance computing, cloud computing and big data application technology, in order to meet the large-scale scalable communication requirements of high-performance computing and data center services, traditional electrical interconnection networks face severe challenges in terms of performance, energy consumption and cost. In recent years, researchers have proposed a variety of reconfigurable optical interconnection network architectures for high-performance computing systems and data centers. In this paper, the advantages of optical interconnection network over electrical interconnection network are described. Then, several typical reconfigurable optical interconnect network architectures are introduced, and their characteristics are analyzed and compared. Finally, the development trend of reconfigurable optical interconnect networks is discussed.

Key words: optical interconnection network, reconfigurable, high-performance computing, data center