A theoretical study of the polarization-fluctuation induced bias of an resonator fiber optic gyro (R-FOG), which employs a polarization-maintaining fiber ring resonator with a photoinduced birefringent grating, is presented. The polarization conversion due to the photoinduced birefringent grating can stabilize the resonator output, which result in the reduction of the bias in the R-FOG output. The influences of the parameters, such as the fluctuation of the input polarization, the resonator finesse, and the photoinduced index change of the dielectric tensor, on the bias of the gyro-output have been investigated. Our results show that with the help of a photoinduced birefringent grating the bias of the gyro-output can be limited in the order of 10/sup -7/ rad/s, a typical specification for the aircraft-navigation.
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机译:对谐振光纤陀螺仪(R-FOG)的偏振波动引起的偏置进行了理论研究,该陀螺仪采用具有光诱导双折射光栅的保偏光纤环形谐振器。由于光致双折射光栅而引起的偏振转换可以稳定谐振器输出,从而降低R-FOG输出中的偏置。研究了输入极化的波动,谐振器的精细度以及介电张量的光导指数变化等参数对陀螺仪输出偏置的影响。我们的结果表明,借助光致双折射光栅,陀螺仪输出的偏置可以限制在10 / sup -7 / rad / s的数量级,这是飞机导航的典型规格。
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