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Influence of optical fiber positioning accuracy on IFU performance
Author(s): Weimin Sun; Le Yu; Xiren Jin; Qi Yan; Tao Geng; Xudong Chen; Hang Jiang; Qiong Zhang; Rong Zhao
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Paper 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.

Paper Details

Date Published: 10 July 2018
PDF: 8 pages
Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107065Z (10 July 2018); doi: 10.1117/12.2312165
Show Author Affiliations
Weimin Sun, Harbin Engineering Univ. (China)
Le Yu, Harbin Engineering Univ. (China)
Xiren Jin, Harbin Engineering Univ. (China)
Qi Yan, Harbin Engineering Univ. (China)
Tao Geng, Harbin Engineering Univ. (China)
Xudong Chen, Harbin Engineering Univ. (China)
Hang Jiang, Harbin Engineering Univ. (China)
Qiong Zhang, Harbin Engineering Univ. (China)
Rong Zhao, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 10706:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Ramón Navarro; Roland Geyl, Editor(s)

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