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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Published on: March 20, 2017

Metallic-glass fiber-optic phase modulators.

F R Trowbridge, R L Phillips

    Optics Letters
    |August 28, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed novel optical-fiber phase modulators using magnetostrictive metallic glass. The linear modulator design achieved the highest sensitivity, demonstrating potential for advanced sensing applications.

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    Area of Science:

    • Materials Science
    • Optoelectronics
    • Physics

    Background:

    • Optical-fiber sensors are crucial for various applications.
    • Magnetostrictive materials offer unique strain-optic coupling properties.
    • Developing efficient phase modulators is key for signal processing.

    Purpose of the Study:

    • To construct and evaluate optical-fiber phase modulators based on magnetostrictive metallic glass.
    • To investigate the performance of different modulator configurations (ring and linear).
    • To determine the sensitivity of these devices to magnetic fields.

    Main Methods:

    • Fabrication of three optical-fiber phase modulators by bonding optical fibers to metallic-glass alloy.
    • Testing two ring and one linear modulator configurations.
    • Measuring induced phase shift versus magnetic field excitation frequency, normalized by fiber length.

    Main Results:

    • Successful construction of magnetostrictive metallic-glass-based optical-fiber phase modulators.
    • Characterization of strain transfer from metallic glass to optical fiber under magnetic fields.
    • The linear modulator configuration achieved the highest sensitivity of 75 mrad/cm-Oe.

    Conclusions:

    • Magnetostrictive metallic glass is a viable material for optical-fiber phase modulators.
    • The linear configuration demonstrated superior performance for magnetic field sensing.
    • These modulators show promise for applications requiring high sensitivity magnetic field detection.