A subminiature integrated optical fiber positioning device

Hongzhuan Hu; Jianping Wang; Zhigang Liu; Zengxiang Zhou; Chao Zhai; Yonggang Gu; Ping Zhang; Jiaru Chu

doi:10.1117/12.3018058

18 July 2024 A subminiature integrated optical fiber positioning device

Hongzhuan Hu, Jianping Wang, Zhigang Liu, Zengxiang Zhou, Chao Zhai, Yonggang Gu, Ping Zhang, Jiaru Chu

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130967R (2024) https://doi.org/10.1117/12.3018058
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

This paper presents a miniaturized integrated fiber optic positioning device structure scheme. Due to the use of a DC servo motor with a diameter of 4mm, its spacing can reach 5.4mm, The focal plane can be divided into tens of thousands of evenly distributed areas with a spacing of 5.4mm, over 25000 optical fibers can be arranged on a focal plane with a diameter of 1 meter. The optical fiber positioning device is based on the principle of dual rotation positioning, which includes a central rotation mechanism that rotates within a range of ± 180 ° around the positioning device’s center and an eccentric rotation mechanism that rotates within a range of ± 90 °around the center arm midpoint. Each optical fiber positioning device relies on the central axis with an arm length of 1.56mm and the rotation of an eccentric axis with an equal arm length, and can be positioned in a circular area with a spacing of 5.4mm and a diameter of 6.24mm that overlaps without blind spots to observe the galaxy. For reduce unit’s volume, the fiber optic positioning device use a way of integrating three units into one group, three fiber optic positioning devices share a common base, this can greatly reduce the difficulty of designing and installing optical fiber positioning devices. In order to mount a 4mm drive motor within the 5.4mm unit range, the eccentric shaft motor is offset from the eccentric shaft, and connect with an Oldham coupling. The optical fiber positioning device adopts a closed-loop method for positioning. The fiber positioning device sample test results show that the closed-loop positioning accuracy of the positioning accuracy reaches 0.01mm, which meets the requirements of fiber positioning.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Hongzhuan Hu, Jianping Wang, Zhigang Liu, Zengxiang Zhou, Chao Zhai, Yonggang Gu, Ping Zhang, and Jiaru Chu "A subminiature integrated optical fiber positioning device", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130967R (18 July 2024); https://doi.org/10.1117/12.3018058

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