影响谐振式光纤陀螺精细度的因素分析

Study on Factors Influencing the Finesse of Resonator Fiber Optic Gyro

分析了偏振波动噪声和背散噪声对谐振式光纤陀螺精细度的影响。搭建了光纤环形谐振环测试系统,实验结果表明:通过使用偏振控制器和保偏光源抑制偏振波动噪声,能使光纤谐振环的特性参数精细度由64.67提高到101,谐振深度由0.503 3提高到0.712。并且测得光纤谐振腔中背向散射光与主信号强度之比为0.026 7%。研究结果可为谐振式光纤陀螺的小型化和高灵敏度提供理论参考。

The influence of polarization fluctuation noise and backscattering noise on the fineness of the resonant fiber optic gyro was analyzed.And an optical fiber ring resonance ring test system was set up.The experimental results show that,by using apolarization controller and a polarization maintaining light source to suppress polarization fluctuation noise,the fineness and the resonance depth of the characteristic parameters of the fiber resonance ring can be increased from 64.67 to 101,and from 0.503 3 to 0.712,respectively.And the ratio of the backscattered light to the main signal intensity in the fiber resonator was measured to be0.026 7%.The research results can provide a theoretical reference for the miniaturization and high sensitivity of the resonant fiber optic gyroscope in the future.