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1887

Bias reduction by polarisation dispersion in the fibre-optic gyroscope

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Abstract

In a ‘reciprocal architecture’ FOG a single-mode filter is used to reduce bias drift resulting from changing fibre birefringence. We show that if a birefringent element is combined with this filter the bias is reduced if the dispersion in the element exceeds the source coherence length. This significantly relaxes the requirements for mode filter extinction.

References

    1. 1)
      • R. Ulrich . Fibre-optic rotation sensing with low drift. Opt. Lett. , 173 - 175
    2. 2)
      • E.C. Kintner . Polarization control in optical-fiber gyroscopes. Opt. Lett. , 154 - 156
    3. 3)
      • R. Ulrich . (1980) Polarization and depolarization in the fiber-optic gyroscope, Springer series in optical sciences.
    4. 4)
      • E. Jones . (1983) Analysis of noise and bias in the fibre optic gyroscope, First international conference on optical fibre sensors.
    5. 5)
      • R.I. Fredricks , R. Ulrich . Phase error bounds of fibre gyro with imperfect polariser/depolariser. Electron. Lett. , 330 - 332

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