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256 × 256 Turnover-type free-space multichannel optical switch based on polarization control using liquid-crystal

T Sakano, K Kimura, K Noguchi

    Applied Optics
    |November 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel turnover architecture enables compact, large-scale free-space multichannel optical switches. A 256x256 switch, the largest reported rearrangeable optical switch, successfully demonstrated 400 Mbits/s signal transmission.

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    Area of Science:

    • Optoelectronics
    • Telecommunication Engineering
    • Computer Interconnection Networks

    Background:

    • Free-space multichannel optical switches utilizing polarization control are crucial for advanced telecommunication and computer interconnection networks.
    • Existing architectures face challenges in scalability, transparency, and compactness for large-scale applications.

    Purpose of the Study:

    • To introduce and validate a novel 'turnover type' switching architecture for free-space multichannel optical switches.
    • To demonstrate the feasibility of a large-scale, transparent, and compact optical switch design.

    Main Methods:

    • Design and fabrication of a 256x256 multichannel optical switch based on the proposed turnover architecture.
    • Experimental testing of switching operations and signal transmission capabilities.

    Main Results:

    • The fabricated 256x256 switch represents the largest channel count reported for rearrangeable optical switches.
    • Successful demonstration of switching operations and high-speed signal transmission at 400 Mbits/s using a prototype.

    Conclusions:

    • The turnover architecture facilitates the creation of large-scale, transparent, and compact free-space multichannel optical switches.
    • The demonstrated 256x256 switch validates the architecture's potential for next-generation optical networks.