受激布里渊光纤陀螺拍频稳定性  

Beat frequency stability of stimulated Brillouin fiber gyroscope

作　　者：李绪友[1] 何周[1] 张勇[1] 洪伟[1] 

机构地区：[1]哈尔滨工程大学自动化学院,哈尔滨150001

出　　处：《中国惯性技术学报》2010年第3期338-342,共5页Journal of Chinese Inertial Technology

基　　金：国防科工委基金项目(51409040103CB0106)

摘　　要：受激布里渊光纤陀螺利用两束布里渊散射光的拍频来指明陀螺的旋转角速度,拍频的稳定性将直接影响到布里渊光纤陀螺的稳定性。在分析了受激布里渊光纤陀螺基本工作原理的基础上,详细分析了受激布里渊光纤陀螺中温度、克尔效应与光学泵浦游失效应对拍频稳定性的影响,分析了受激布里渊光纤陀螺拍频温度系数和产生模式跳变的温度间隔;实验测得单模光纤环的布里渊散射光频率随温度的变化率为1.26KHz/℃;给出了综合考虑克尔效应和泵浦游失效应影响的陀螺拍频输出曲线,这些结果为布里渊光纤陀螺的进一步实现提供了一定的理论和实验依据。Due to the angular rate of stimulated Brillouin fiber-optic gyroscope is indicated by the beat frequency of two beams of Brillouin scattering light,the beat frequency stability would directly influence the stability of Brillouin fiber-optic gyroscope.Based on the operating principle of Brillouin fiber gyroscope,the influences of temperature,Kerr effect and pump walk-off effect in the stimulated gyroscope on beat frequency are analyzed,and the beat frequency temperature stability coefficient and the temperature interval of model leap are analyzed.The Brillouin frequency change-rate with temperature is 1.26 kHz/℃ by experiment measurement,and the beat frequency output curve is given considering the Kerr effect and pump walk-off effect.These works provide certain theory and experiment basis for the further realization of Brillouin fiber gyroscope.

关 键 词：受激布里渊 拍频稳定性 光纤陀螺 泵浦游失效应 

分 类 号：U666.1[交通运输工程—船舶及航道工程]