Research progress of the resonant fiber optic gyroscope technology

Linglan Wang; Yuchao Yan; Huilian Ma; Zhonghe Jin

doi:10.1117/12.2197580

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8 October 2015 Research progress of the resonant fiber optic gyroscope technology

Linglan Wang, Yuchao Yan, Huilian Ma, Zhonghe Jin

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Proceedings Volume 9679, AOPC 2015: Optical Fiber Sensors and Applications; 967906 (2015) https://doi.org/10.1117/12.2197580
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

The resonant fiber optic gyro (RFOG) is a high accuracy inertial rotation sensor based on the Sagnac effect. The existence of various noises, including the nonreciprocal noises such as the polarization noise and the Kerr noise as well as the reciprocal circuit noise, limits the performance improvement of the RFOG. An improved scheme by inserting two in-line polarizers in the polarization maintaining fiber transmission-type resonator has been proposed to suppress the polarization-fluctuation induced drift. Furthermore, the adoption of the air-core photonic bandgap fibers (PBFs) offers a novel solution to reduce the optical Kerr effect. In addition, A digital signal processor is designed to reduce the reciprocal noises and detect the rotation information. A minimum actual rotation of 0.001°/s is achieved. The dynamic range is improved by a factor of 7 and the scale factor nonlinearity is decreased by a factor of 60.

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Linglan Wang, Yuchao Yan, Huilian Ma, and Zhonghe Jin "Research progress of the resonant fiber optic gyroscope technology", Proc. SPIE 9679, AOPC 2015: Optical Fiber Sensors and Applications, 967906 (8 October 2015); https://doi.org/10.1117/12.2197580

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