Influence of optical fiber positioning accuracy on IFU performance

Weimin Sun; Le Yu; Xiren Jin; Qi Yan; Tao Geng; Xudong Chen; Hang Jiang; Qiong Zhang; Rong Zhao

doi:10.1117/12.2312165

10 July 2018 Influence of optical fiber positioning accuracy on IFU performance

Weimin Sun, Le Yu, Xiren Jin, Qi Yan, Tao Geng, Xudong Chen, Hang Jiang, Qiong Zhang, Rong Zhao

Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III; 107065Z (2018) https://doi.org/10.1117/12.2312165
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The optical-fiber-based Integral Field Unit (IFU) is a very important device for astronomical observation. The IFU can obtain higher spatial resolution and good transmission efficiency. In this paper, a small IFU with 242 fibers was built for the prototype of the Fiber Arrayed Solar Optical Telescope (FASOT). It adopts the method of “micro lens + fiber array”. We designed the fiber with the core diameter of 35μm and NA 0.12. Two quartz positioning plates with micro pores were chosen to localize these fibers. And the micro lens was designed according to the parameter requirement. The coupling efficiency and the focal ratio between the micro lenses array and the fiber array are analyzed when position mismatch. The angular error is the main effect to influence the coupling efficiency.

Citation Download Citation

Weimin Sun, Le Yu, Xiren Jin, Qi Yan, Tao Geng, Xudong Chen, Hang Jiang, Qiong Zhang, and Rong Zhao "Influence of optical fiber positioning accuracy on IFU performance", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107065Z (10 July 2018); https://doi.org/10.1117/12.2312165

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KEYWORDS

Optical fibers

Error analysis

Prototyping

Zemax

Astronomy

Astronomical imaging

Optical telescopes

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