Densely packed N×N wavelength cross-connect switch module

Hisato Uetsuka, Masao Tachikura, Hitoshi Kawashima, Kazuhiko Ikeda, Keisuke Sorimoto, Hiroyuki Tsuda, Keiichi Sasaki, Yuto Yamashita

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    A wavelength cross-connect switch (WXC) is proposed and demonstrated. The cross-connect optics have orthogonal imaging systems that operate differently in the switching and spectral planes. The switching plane has 2f Fourier optics with a Rayleigh length. On the other hand, the spectral plane has 4f imaging optics. Two types of switching engines, microelectromechanical system (MEMS) mirrors and liquid crystal on silicon (LCOS), are applied for the same cross-connect optics. The 5×5 WXC with MEMS mirrors has a 100 GHz channel spacing, which is compatible with the International Telecommunication Union (ITU) grid. On the other hand, the WXC with LCOS has a variable channel spacing. The characteristics of two types of WXC are compared. In addition, the port count, which is one of the important parameters, is discussed.

    Original languageEnglish
    Title of host publicationNext-Generation Optical Communication
    Subtitle of host publicationComponents, Sub-Systems, and Systems IV
    EditorsGuifang Li, Xiang Zhou
    ISBN (Electronic)9781628414790
    Publication statusPublished - 2015 Jan 1
    EventNext-Generation Optical Communication: Components, Sub-Systems, and Systems IV - San Francisco, United States
    Duration: 2015 Feb 102015 Feb 12

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    ISSN (Print)0277-786X
    ISSN (Electronic)1996-756X


    OtherNext-Generation Optical Communication: Components, Sub-Systems, and Systems IV
    CountryUnited States
    CitySan Francisco


    • Liquid crystal on silicon
    • MEMS
    • ROADM
    • Wavelength cross-connect switch

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

    Fingerprint Dive into the research topics of 'Densely packed N×N wavelength cross-connect switch module'. Together they form a unique fingerprint.

    Cite this