提出了一种用于布里渊光纤陀螺的光纤环形腔设计方法。在分析了布里渊光纤陀螺原理的基础上,利用琼斯矩阵光学的理论以及光纤中的受激布里渊散射理论,详细研究了布里渊光纤环形腔的特性。通过对腔内外光强的细致分析,得出布里渊光纤陀螺环形腔对于腔的耦合系数及输入光强的要求。实验结果表明,该方法用于设置布里渊光纤陀螺工作点,能够保证斯托克斯光的最大传输效率,并有效抑制光路中的散粒噪声。

A method for designing optic fiber ring in Brillouin Fiber Optic Gyro (B-FOG) is presented. Based on the principle of Brillouin fiber optic gyroscope,the optical Jones matrix theory and stimulated Brillouin scattering classical theory are utilized to describe the characteristic of Brillouin optical resonator in detail. Through meticulous analysis of light intensity inside and outside the resonator,the requirement of coupling state and pump light intensity which the fiber ring resonator in B-FOG needs is obtained. In the end,the reasonable Brillouin fiber ring resonator in B-FOG is designed,and test results show that when this method is used to set B-FOG working point,the greatest transmission efficiency of the Stokes light is ensured and the granular noise is suppressed.