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Related Experiment Video

Updated: Jul 6, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

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Magneto-optical disk drive technology using multiple fiber-coupled flying optical heads. Part I. System design and

J P Wilde, J F Heanue, A A Tselikov

    Applied Optics
    |March 22, 2008
    PubMed
    Summary

    A new flying-optical-head data storage technology uses a micro-optical recording head with a silicon micromachined torsional mirror for precise track following in a rotating disk drive.

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    Area of Science:

    • Data Storage Technology
    • Optical Engineering
    • Materials Science

    Background:

    • Traditional data storage technologies face limitations in speed and density.
    • Advancements in optical recording offer potential for higher storage capacities.
    • Micro-electro-mechanical systems (MEMS) enable miniaturization of optical components.

    Purpose of the Study:

    • To introduce a novel flying-optical-head data storage technology.
    • To demonstrate the feasibility of using micro-optical recording heads for high-bandwidth track following.
    • To present the design and performance of a prototype drive utilizing this technology.

    Main Methods:

    • Development of a micro-optical recording head with a silicon micromachined torsional mirror.
    • Integration of multiple heads and disks within a Winchester-style rotating disk drive.
    • Utilization of single-mode optical fibers for light delivery and collection.
    • Implementation of polarization-maintaining and low-birefringence fiber systems for magneto-optical (MO) recording.
    • Design of a fixed optics module with laser diode, MO detection optics, and a fiber bundle switch.

    Main Results:

    • Successful implementation of a micro-optical recording head capable of high-bandwidth track following.
    • Demonstration of a functional prototype drive integrating multiple heads and disks.
    • Effective use of optical fibers for data transfer to and from the heads.
    • Successful application in magneto-optical recording using specialized fiber systems.

    Conclusions:

    • The novel flying-optical-head data storage technology shows promise for future high-density storage solutions.
    • The micro-optical recording head design enables precise and efficient data access.
    • The integrated system represents a significant advancement in optical data storage architecture.