The Fibre-Optic Gyro - Physics and Astronomy - University of Canterbury - New Zealand

The Fibre-Optic Gyro

The fibre-optic gyro or FOG is a state of the art commercial passive Sagnac interferometer made with several kilometers of optical fibre. While not as accurate or precise as our large ring lasers, this device is nevertheless useful for a variety of small experiments. Fibre optic gyros have been used in the past in collaboration with the department of civil engineering who study the response of buildings in earthquakes.

Ulli Schreiber using a FOG to demonstrate the measurement of the motion of the Auckland sky tower
Ulli Schreiber using a FOG to demonstrate the measurement of the motion of the Auckland sky tower.
Motion of the Auckland sky tower measured with a FOG compared to conventional potentiometer measurements
Motion of the Auckland sky tower measured with a FOG compared to conventional potentiometer measurements.
FOG
  • Department of Physics and Astronomy
    University of Canterbury,
    Private Bag 4800,
    Christchurch 8140,
    New Zealand.
  • hod-secretary@phys.canterbury.ac.nz
    Phone: +64 3 364 2523
    Fax: +64 3 364 2469
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