Analysis of Temperature Dependence of Thermally Induced Transient Effect in Interferometric Fiber-optic Gyroscopes

Thermal characteristics, such as diffusivity and temperature induced change in the fiber mode index of rotation sensing fiber coil are critical factors which determine the time varying, thermo-optically induced bias drift of interferometric fiber-optic gyroscopes (IFOGs). In this study, temperature dependence of the transient effect is analyzed in terms of the thermal characteristics of the fiber coil at three different temperatures. By applying an analytic model to the measured bias in the experiments, comprehensive thermal factors of the fiber coil could be extracted effectively. The validity of the model was confirmed by the fact that the extracted values are reasonable results in comparison with well known properties of the materials of the fiber coil. Temperature induced changes in the critical factors were confirmed to be essential in compensating the transient effect over a wide temperature range.

[1]  D. Shupe,et al.  Thermally induced nonreciprocity in the fiber-optic interferometer. , 1980, Applied optics.

[2]  Olivier F.J. Tirat,et al.  Finite element model of thermal transient effect in fiber optic gyro , 1996, Optics + Photonics.

[3]  George A. Pavlath.  Closed-loop fiber optic gyros , 1996, Optics + Photonics.

[4]  F. Mohr,et al.  Rigorous treatment of fiber-environmental interactions in fiber gyroscopes , 2008, 2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering.

[5]  Nicholas J. Frigo,et al.  Compensation Of Linear Sources Of Non-Reciprocity In Sagnac Interferometers , 1983, Other Conferences.

[6]  E Weidel,et al.  Sensitivity of a fiber-optic gyroscope to environmental magnetic fields. , 1982, Optics letters.

[7]  Thomas E. Waterman,et al.  Handbook of thermophysical properties of solid materials , 1961 .

[8]  Hervé Lefevre,et al.  The Fiber-Optic Gyroscope , 1992 .

[9]  H J Shaw,et al.  All-single-mode fiber-optic gyroscope. , 1981, Optics letters.

[10]  Paul Ruffin,et al.  Investigation of the effects of temporal thermal gradients in fiber optic gyroscope sensing coils, part 2 , 1995 .

[11]  W. Burns,et al.  Polarizer requirements for fiber gyroscopes with high-birefringence fiber and broad-band sources , 1984 .

[12]  R Ulrich,et al.  Fiber-optic rotation sensing with low drift. , 1980, Optics letters.

[13]  K. Petermann,et al.  Intensity-dependent nonreciprocal phase shift in fiber-optic gyroscopes for light sources with low coherence. , 1982, Optics letters.

[14]  H. Shaw,et al.  An overview of fiber-optic gyroscopes , 1984, Journal of Lightwave Technology.

[15]  Min-Sik Jo,et al.  Accurate Evaluation of Polarization Characteristics in the Integrated Optic Chip for Interferometric Fiber Optic Gyroscope Based on Path-matched Interferometry , 2009 .

[16]  H J Shaw,et al.  All-single-mode fiber-optic gyroscope with long-term stability. , 1981, Optics letters.