作为积分视场光谱仪（Integral Field Spectroscopy，IFS）的核心部件，光纤阵列IFU（Integral Field Unit）的性能直接影响到IFS的观测数据质量及观测精度，因此通过实验手段客观的评价IFU中光纤阵列排布精度以及阵列中每根光纤的性能是IFS研制过程中的重要环节。目前国际上光纤阵列的检测方法主要有两种，其一是光纤数比较少的时候进行逐根检测；其二是对于光纤数较多的情况下进行逐根光纤抽样检测。本文对云南天文台光纤阵列检测系统进行了改进，基于光学成像原理实现了一键式操作全自动化数据采集及数据处理，可一次性检测出光纤阵列排布精度、光纤焦比退化、光纤阵列中每根光纤的透过率、赝狭缝端每根光纤沿光轴方向排布精度等基本参数。利用升级后的检测系统对光纤阵列进行了检测，验证了系统的可视化操作以及自动化检测功能，该系统可将原来需要数周的检测时间缩短至一天之内，极大地提高了工作效率，有利于促进国内光纤积分视场单元制作和测试工艺的发展。主要工作概括为三点：首先，根据光纤式IFU的检测流程提出了一套高效的自动化检测方案。其次，完成了对光纤阵列排布精度、赝狭缝端光纤排布精度、赝狭缝端光纤沿光轴方向排布精度、微透镜阵列与光纤阵列共轴精度、光纤焦比退化和光纤透过率检测算法的分析，并将光学元件切换控制、数据采集和检测算法程序进行了整合，实现了整个检测过程的自动化和程序的可视化。最后，利用该系统对光纤阵列进行了检测，验证了系统实现自动化检测的功能，并完成了误差分析。
其他摘要
As the core component of IFS (Integral Field Spectroscopy), the performance of the IFU (Integral Field Unit) directly affects the quality and accuracy of IFS observation data. Therefore, it is an important step in the development process of IFS to objectively evaluate the layout accuracy of optical fibers in IFU and the performance of each optical fiber in the array by experimental means.At present, there are two main detection methods for optical fiber array. One is to detect each fiber when the number of fibers is relatively small. The second is to carry out sampling detection one by one in the case of more optical fibers. In this paper, the optical fiber array detection system is improved, the Yunnan observatory implemented on the basis of the principle of optical imaging one-click operation automatic data acquisition and data processing, can be a one-time to detect the optical fibers, optical fiber array configuration precision rate is degraded, optical fiber array of each optical transmittance, turns the slit each fiber arranged along the optical axis is the basic parameters such as accuracy, And the improved detection system is used to test and verify, and the reliable detection results are obtained. The system can shorten the measurement time from several weeks to one day, greatly improve the work efficiency and promote the development of domestic fiber array processing technology.The main work can be summarized as follows:Firstly, a set of efficient automatic detection scheme is proposed according to the detection process of optical fiber IFU.Second, completed the precision of fiber array configuration, slit fiber alignment accuracy, slit fibers arranged along the optical axis precision coaxial precision, micro lens array and the optical fiber array, fiber optic focal ratio degradation and optical transmittance detection algorithm. The optical fiber array was detected by the upgraded detection system, and the visual operation and automatic detection function of the system were verified, it realizes the automation of the whole detection process and the visualization of the program.Finally, the system is used to detect the IFU. The function of automatic detection is verified, and the error is completed.
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