传感技术学报2016，Vol.29Issue(12)：1815-1821,7.DOI:10.3969/j.issn.1004-1699.2016.12.006
谐振式光纤陀螺偏振波动噪声的温度特性
Temperature Characteristics of Polarization Fluctuation Noise in Resonator Fiber Optic Gyroscope
摘要
Abstract
Polarization fluctuation owing to temperature variations of the fiber ring resonator(FRR)is one of the main optical noises,which seriously affects detection accuracy of resonator fiber optic gyroscope,it can be effectively sup?pressed by controlling temperature of resonator. In order to suppress polarization fluctuation to reduce the deteriora?tion of R-FOG accuracy caused by temperature changes of FRR,the effect of temperature variations on resonance curve and demodulation curve were theoretically analyzed in this paper. Experiments to research resonant character?istics and demodulation curve features and zero bias and zero bias stability at the gyro output were carried out under different temperatures,and experimental results were analyzed. Results show that by controlling the temperature around the fiber ring resonator to 27.00℃,phase separation between the unwanted resonance and the desired reso?nance achieves farthest,the desired resonance is primly symmetrical about the resonant frequency point,slope of the linear region on demodulation curve reaches its maximum,detection error of resonant frequency can be ignored in this state;a zero bias stability of 0.07 °/s of gyro is obtained in sampling time of 150 s,which is almost 100 times small than that when the temperature of resonantor is 25.50℃,detection accuracy of gyro is markedly improved.关键词
谐振式光纤陀螺/偏振波动噪声/温度控制/零偏稳定性/光纤环Key words
R-FOG/polarization fluctuation/temperature controlling/zero bias stability/fiber ring resonator分类
信息技术与安全科学引用本文复制引用
张婷,郑华,杜建功,安盼龙,闫树斌,薛晨阳..谐振式光纤陀螺偏振波动噪声的温度特性[J].传感技术学报,2016,29(12):1815-1821,7.基金项目
国家自然科学基金杰出青年基金项目(51225504) （51225504）
