光纤旋转连接器耦合误差分析

针对2根光纤进行无接触动态连接时机械精度及装配技术都无法满足需要的问题,对光纤旋转连接器耦合误差进行分析。在分析光纤准直器中光线轨迹的基础上,建立一种光纤准直器插入损耗和耦合效率理论模型,从径向偏差、轴向偏差和角度偏差3个方面进行规律分析,并通过实验数据获取了误差对光路传输损耗的影响规律,得出光纤准直器耦合损耗对于角度偏差最敏感,径向偏差次之,轴向偏差影响较小的结论。该研究实现了光纤旋转连接,为研制单/多通道光纤旋转连接器提供了理论依据。

Coupling Error Analysis of Fiber Optic Rotary Connector

According to the problem that mechanical precision and assembly technology cannot meet the application demands when a couple of fibers non-contact dynamic connected each other, this article analyzes the coupling error of optical fiber rotate connector. Based on analyzing the trace of fiber collimator, it is established an insertion loss and coupling efficiency theory model that analyze the discipline in aspect of radial deviation, axial deviation and angular deviation. This research obtains the effect discipline of the three errors on transmission loss of optical path through experimental data. With the result that the sensitivity sequence from big to small of coupling error of fiber collimator is angular deviation, radial deviation and axial deviation. The researches accomplish the rotary connection of optic fiber and provide the theoretical basis of developing of single and multi channel fiber optic rotary connectors.