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Applied Optics

Applied Optics


  • Vol. 29, Iss. 36 — Dec. 20, 1990
  • pp: 5360–5365

Passive fiber optic gyroscope

Gert F. Trommer, Hans Poisel, Wolfhardt Buhler, Engelbert Hartl, and Reinhard Muller  »View Author Affiliations

Applied Optics, Vol. 29, Issue 36, pp. 5360-5365 (1990)

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A fiber optic gyroscope different from the standard concept is presented. A fused fiber 3 × 3 directional coupler provides a constant phase shift thus enabling the detection of rotation rate at the quadrature point without phase modulation. Bias errors due to birefringent coupling centers in the fiber coil are avoided by using an unpolarized light source. A contrast insensitive signal recovery scheme eliminates the influence of polarization fluctuations on the scale factor. First measurements with a prototype gyroscope (90 mm in diameter and 23 mm in height) show a bias stability of <4.7°/h and scale factor accuracy of <0.1% in the range of ±200°/s.

© 1990 Optical Society of America

Original Manuscript: November 28, 1989
Published: December 20, 1990

Gert F. Trommer, Hans Poisel, Wolfhardt Buhler, Engelbert Hartl, and Reinhard Muller, "Passive fiber optic gyroscope," Appl. Opt. 29, 5360-5365 (1990)

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