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Related Concept Videos

Gyroscope: Precession01:24

Gyroscope: Precession

Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

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Published on: February 28, 2016

Phase-nulling fiber-optic laser gyro.

R F Cahill, E Udd

    Optics Letters
    |August 19, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study presents a fiber-optic gyro using closed-loop phase compensation. It successfully detected rotation rates as low as 0.5 degrees/sec.

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    Area of Science:

    • Optoelectronics
    • Inertial Navigation

    Background:

    • Fiber-optic gyroscopes (FOGs) are crucial for inertial navigation.
    • Closed-loop phase compensation enhances FOG sensitivity and stability.

    Purpose of the Study:

    • To describe a novel fiber-optic gyro design.
    • To evaluate its performance in sensing low rotation rates.

    Main Methods:

    • Implementation of a closed-loop phase compensation technique.
    • Utilizing a fiber coil with 135-mm radius and 100-m length.

    Main Results:

    • Demonstrated sensing of rotation rates down to 0.5 degrees/sec.
    • Preliminary experimental validation of the FOG's capability.

    Conclusions:

    • The developed fiber-optic gyro shows promise for high-precision rotation sensing.
    • Closed-loop phase compensation is effective for improving FOG performance.