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Network Technologies for SDM

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Space-Division Multiplexing in Optical Communication Systems

Part of the book series: Springer Series in Optical Sciences ((SSOS,volume 236))

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Abstract

Traffic demands on the Internet are becoming increasingly dynamic and are driving the need for greater routing flexibility in the underlying optical network. Space-division multiplexing (SDM) is mainly seen as a means to increase data throughput and handle exponential traffic growth. But, its role is certainly more diverse. Research on SDM encourages device integration, brings new functionality to network elements and helps optical networks to evolve. As a result, the number of individual components in the future networks will decrease, which in turn will improve overall reliability as well as lower operational expenditure and power consumption. From an application point of view, the prevalence of various band-consuming applications such as video streaming, cloud computing, big data, Internet of Things (IoT), social networking service (SNS) will produce a strong traffic demand especially on short-reach fiber transmission links. Among them, inter- and intra-data center (DC) traffics are expected to grow very rapidly in the coming years, and the development of ultra-high-capacity data interconnection and network technologies is urgently needed. Such short-reach links are promising candidates of the first-stage introduction of SDM technologies not only because of the highest traffic demands but also due to relaxed fiber specifications that come hand in hand with the shorter transmission distance. The first part of this chapter introduces basic technologies devised for network nodes and reviews recent research which has extended the SDM concept to optical switching as well as has utilized SDM-specific features to facilitate network control. The second part then focuses on short-reach systems and discusses an application example of SDM for data center signal protection.

Werner Klaus is a chapter editor.

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Acknowledgements

We appreciate Dr. T. Kamiya and Prof. T. Morioka for their support in researching short-reach MCF applications. This work was also partly supported by “The research and development project for the ultra-high speed and green photonic networks” of the Ministry of Internal Affairs and Communications, Japan.

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Authors and Affiliations

  1. National Institute of Information and Communications Technology, Koganei, Tokyo, Japan

    Werner Klaus, Jun Sakaguchi & Benjamin J. Puttnam

  2. Research & Development Group, Hitachi Ltd., Kokubunji, Tokyo, Japan

    Nobuhiko Kikuchi, Yong Lee & Kenichi Tanaka

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  1. Werner Klaus
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  6. Kenichi Tanaka
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Correspondence to Werner Klaus .

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Editors and Affiliations

  1. Research Institute of Electrical Communication (RIEC), Tohoku University, Sendai, Miyagi, Japan

    Masataka Nakazawa

  2. KDDI Research, Inc., Fujimino, Saitama, Japan

    Masatoshi Suzuki

  3. Photonic Network Laboratory, Photonic ICT Research Center, Network Research Institute, National Institute of Information and Communications Technology, Koganei, Tokyo, Japan

    Yoshinari Awaji

  4. Technical University of Denmark, Kgs. Lyngby, Denmark

    Toshio Morioka

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Klaus, W., Sakaguchi, J., Puttnam, B.J., Kikuchi, N., Lee, Y., Tanaka, K. (2022). Network Technologies for SDM. In: Nakazawa, M., Suzuki, M., Awaji, Y., Morioka, T. (eds) Space-Division Multiplexing in Optical Communication Systems. Springer Series in Optical Sciences, vol 236. Springer, Cham. https://doi.org/10.1007/978-3-030-87619-7_6

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