电光与控制, 2020, 27 (4): 78, 网络出版: 2020-06-15
光纤环非互易性结构仿真及设计优化
Simulation and Design Optimization of Nonreciprocal Structure of Fiber Coil
光纤环 shupe误差 有限元仿真 反交叉对称绕法 optical fiber coil shupe error finite element simulation reverse-crossing symmetric winding method
摘要
主要针对光纤环在变化的温度场中产生的热致非互易性旋转速率误差(shupe误差)进行了仿真分析, 并且提出了一种新的光纤环绕制方法以减小shupe误差。首先建立了3种对称绕法下带骨架光纤环的有限元模型并对它们施加相同的随时间变化的均匀温度场载荷, 经分析计算得到了光纤环中各匝的温度变化率数据。再利用精确到匝的光纤环热致旋转速率误差数学模型进行计算, 最后得出3种绕法下光纤环的shupe误差。仿真分析的结果表明采用新提出的反交叉对称绕法的光纤环对shupe误差的抑制效果最好。
Abstract
The nonreciprocal thermal rotation rate error (shupe error) produced by the fiber coil in the changing temperature field is simulated and analyzed, and a new method for winding of the fiber coil is proposed to reduce the shupe error.Firstly, the finite element models of the fiber coil with skeletons are established respectively with three kinds of symmetrical winding methods, and the same uniform temperature field load varying with time is applied to the three models.After analysis and calculation, the temperature change rate of each turn in the fiber coil is obtained.Then, the shupe error of the fiber coil under the three winding methods is calculated respectively by using the mathematical model of the thermal rotation rate error of the fiber coil, which is accurate on the turn level.The simulation results show that the shupe error is best suppressed by using the new reverse-crossing symmetrical winding method.
王学斌, 郭晨霞, 杨瑞峰, 葛双超. 光纤环非互易性结构仿真及设计优化[J]. 电光与控制, 2020, 27(4): 78. WANG Xuebin, GUO Chenxia, YANG Ruifeng, GE Shuangchao. Simulation and Design Optimization of Nonreciprocal Structure of Fiber Coil[J]. Electronics Optics & Control, 2020, 27(4): 78.