摘要
提出了磁场和温度场共同作用下光纤陀螺产生磁温耦合效应的理论,建立了相应的数学模型,并对该模型进行仿真分析和实验验证.理论、仿真和实验结果表明,光纤陀螺产生的磁温交叉耦合度来自于磁场产生的非互易圆双折射、不同温度下光纤环上热应力导致的双折射、光纤固有双折射、弯曲双折射等的相互作用.在20℃~60℃的范围内,保偏光纤直径为250μm,拍长为3mm,光纤长度为1 600m,光纤扭转率为1rad/m,光源波长为1 550nm,1 mT径向磁场产生的磁温交叉耦合度的最大值为6.796%.
A theory for magnetic-temperature coupling effect generated in a Fiber Optic Gyroscope（FOG）under the combined action of magnetic and temperature fields was proposed.The magnetic-temperature coupling in FOG originates from the interaction of the magnetic field,fiber twist,birefringence caused by thermal stress,and the intrinsic and bending birefringence of the fiber.The cross-coupling changes with temperature.When the polarization maintaining fiber has a diameter of 250μm,beat length of 3 mm,length of 1 600 m,twist rate of 1 rad/m,and optical source wave length of 1550 nm,the maxim degree of magnetic-thermal coupling generated by a 1 mT radial magnetic field within the temperature range of 20℃ to 60℃ is 6.796% .
作者
陈一平
梁璀
张登伟
杨建华
车双良
刘承
CHEN Yi-ping;LIANG Cui;ZHANG Deng-wei;YANG Jian-hua;CHE Shuang-liang;LIU Cheng(State Key Laboratory of Modern Optical Instrμmentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2018年第5期147-152,共6页
Acta Photonica Sinica
基金
国家自然科学基金(No.61203190)
浙江省自然科学基金(No.LY17F030010)
NQI专项
航天支撑基金资助~~
关键词
光纤陀螺
磁温耦合效应
磁温交叉耦合度
非互易相位差
保偏光纤线圈
Fiber Optic Gyroscope （FOG）
Magnetic-temperature coupling effect
Degree of magnetic-temperature coupling
Nonreciprocal phase error
Polarization Maintaining （PM） fiber coil
