Development of a Large-scale 3D MEMS Optical Switch Module

Tsuyoshi Yamamoto, Johji Yamaguchi, Renshi Sawada, Yuji Uenishi

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)


    A three-dimensional (3D) micro-electro-mechanical system (MEMS) optical switch, consisting of two-axis tilt mirror arrays and free-space optics, is a practical solution for constructing large-scale switching fabrics due to its high component density and low cost. The MEMS-mirror arrays developed by NTT are single-crystal silicon mirrors integrated with high-aspect ratio torsion springs and actuated by electrostatic forces. The free-space optics consist of low-cost high-precision polymer components assembled passively. A prototype module with 100-channel optical fiber input/output exhibited a low coupling loss of 4.0 dB and a switching time of 3 ms.

    Original languageEnglish
    Pages (from-to)37-42
    Number of pages6
    JournalNTT Technical Review
    Issue number7
    Publication statusPublished - Oct 1 2003

    All Science Journal Classification (ASJC) codes

    • Computer Science Applications
    • Computer Networks and Communications
    • Electrical and Electronic Engineering


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