中国光学, 2019, 12 (3): 432, 网络出版: 2019-09-20
应用于空间精密测量的全玻璃光纤耦合器的系统设计
System design of all glass fiber couplers for precise space measurement
空间引力波探测 干涉测量 光纤耦合器 光斑 space gravitational wave detection interferometry measurement fiber-optic coupler spot
摘要
本文提出了一种全玻璃材料的光纤耦合器以实现高精度, 高稳定的干涉测量。首先, 介绍了干涉测量系统的工作原理以及光纤耦合器的系统设计, 然后通过理论分析选取了非球面透镜, 并根据具体的透镜参数进行了数值分析以及软件分析。接着进行了光束参数匹配度以及光束矢量匹配度的容差分析以及结构的热分析。最后结合理论分析以及精密的装调手段完成了光纤耦合器的制作。实验结果表明: 光斑尺寸相对于仿真结果的误差约为34%, 两光斑尺寸差异为09%, 偏心距离低于40 μm, 夹角约为60 μrad, 基本满足干涉测量系统的使用要求。
Abstract
A fiber-optic coupler with all glass materials is presented in this paper to realize high-precision, ultrastable interferometry. Firstly, we introduce the working principle of interferometry systems and the design of the fiber-optic coupler. Secondly, through theoretical analysis, selection of aspheric lenses is performed based on specific parameters of the lenses, which are investigated using numerical and software analysis. Then, we carry out a tolerance analysis of matching degrees of beam parameters and beam vectors, along with a thermal analysis of the structures. Finally, by combining theoretical analysis with precise adjustment, the manufacturing process of the fiber-optic coupler is finalized. Experimental results indicate that the error of the spot size compared to the result of simulations is about 34%. The difference between two beams′spot size is about 09%, their center distance is less then 40 μm and their included angle is about 60 μrad. This data can satisfy the application requirements of the interferometric system.
赵亚, 姚东, 王智, 方超, 李钰鹏. 应用于空间精密测量的全玻璃光纤耦合器的系统设计[J]. 中国光学, 2019, 12(3): 432. ZHAO Ya, YAO Dong, WANG Zhi, FANG Chao, LI Yu-peng. System design of all glass fiber couplers for precise space measurement[J]. Chinese Optics, 2019, 12(3): 432.