中国物理B ›› 2007, Vol. 16 ›› Issue (3): 735-739.doi: 10.1088/1009-1963/16/3/029

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Phenomena of optic-bound effect on fibre optic gyro

宋凝芳, 张春熹, 金靖   

  1. School of Instrument Science \& Optoelectronic Engineering, Beijing University of Aeronautics \& Astronautics, Beijing rm 100083, China
  • 收稿日期:2006-05-22 修回日期:2006-09-18 出版日期:2007-03-20 发布日期:2007-03-20

Phenomena of optic-bound effect on fibre optic gyro

Song Ning-Fang(宋凝芳)†, Zhang Chun-Xi(张春熹), and Jin Jing(金靖)   

  1. School of Instrument Science & Optoelectronic Engineering, Beijing University of Aeronautics & Astronautics, Beijing 100083, China
  • Received:2006-05-22 Revised:2006-09-18 Online:2007-03-20 Published:2007-03-20

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摘要： The optic-bound effect on fibre optic gyro (FOG) precision is analysed theoretically, and formulas describing the change of FOG light power under the action of optic-bound effect are given. It is confirmed that optic-bound effect is a main instantaneous non-reciprocity effect of FOG in addition to the Sagnac effect and can lead to a dynamic error of FOG in practical environments. An approach to suppressing or eliminating the error due to the optic-bound effect is presented and verified experimentally. The result shows that the approach is valid and the precision of FOG is improved observably.

关键词: fibre optics, gyro, optic-bound effect, acoustic noise

Abstract: The optic-bound effect on fibre optic gyro (FOG) precision is analysed theoretically, and formulas describing the change of FOG light power under the action of optic-bound effect are given. It is confirmed that optic-bound effect is a main instantaneous non-reciprocity effect of FOG in addition to the Sagnac effect and can lead to a dynamic error of FOG in practical environments. An approach to suppressing or eliminating the error due to the optic-bound effect is presented and verified experimentally. The result shows that the approach is valid and the precision of FOG is improved observably.

Key words: fibre optics, gyro, optic-bound effect, acoustic noise

中图分类号:  (Sensors, gyros)

  • 42.81.Pa
06.20.Dk (Measurement and error theory) 07.60.Vg (Fiber-optic instruments)