Research on Alignment and Adjustment Method of Large-scale IFU Microlens Array and Optical Fiber Array
Citation
刘世杰 (Liu Shijie). (2022). 大型 IFU 微透镜阵列与光纤阵列对准装调方法研究 [Research on Alignment and Adjustment Method of Large-scale IFU Microlens Array and Optical Fiber Array]. 专业硕士学位论文 [A Dissertation for the Degree of M. Sci], 哈尔滨工程大学 [Harbin Engineering University]. (Submitted Dec. 2021, Defended Mar. 2022).
Keywords
- 积分视场单元 / Integral Field of View Unit/IFU
- 微透镜阵列 / Microlens Array
- 光纤阵列 / Optical Fiber Array
- 对准 / Alignment
- 装调 / Adjustment
- 高精度 / High Precision
- 建模仿真 / Modeling Simulation
- 实验操作 / Experimental Operation
- FASOT 项目 / FASOT Project
- 胶合 / Gluing
- 微孔板 / Microplate
- 光纤设计参数 / Optical Fiber Design Parameters
- 光纤线序排布 / Optical Fiber Line Sequence Arrangement
- 光斑图像 / Spot Image
- 图像灰度值 / Image Gray Value
- 光场模型 / Light Field Model
- 纤芯 / Fiber Core
Brief
The article investigates the alignment and adjustment methods for large-scale integral field unit (IFU) microlens arrays and optical fiber arrays, crucial for high-precision spectral imaging in astronomy, through modeling, simulation, and experimental validation on a 63×64×2 fiber IFU for the FASOT project.
Summary
This master's thesis investigates the alignment and adjustment methods for large-scale Integral Field Unit (IFU) microlens arrays and optical fiber arrays, which are critical for high-precision spectral imaging, particularly in astronomy. The research addresses the challenge of achieving high-precision one-to-one alignment between numerous microlenses and optical fibers. By using modeling simulation and experimental operation on a 63×64×2 microlens array for the FASOT project, the study designed an alignment process and built a detection device. The simulations analyzed the impact of various degrees of freedom of offset on the coupling rate between the microlenses and optical fibers. The experimental work involved the design and construction of a test setup, pre-alignment procedures, the actual alignment process, and the evaluation of the final IFU's transmittance, achieving over 80% efficiency. The research provides insights into the crucial step of aligning microlens and fiber arrays for IFUs used in astronomical instruments.
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