Based on Fiber Array Two-Dimensional Micro Angular Displacement Sensor
Citation
- Authors: 赵婷婷 (Zhao Tingting), 赵勇 (Zhao Yong), 张毅 (Zhang Yi)
- Year and Month: 年 月 (Year Month) - The exact year and month of publication are not fully provided in the excerpts.
- Title (Chinese): 基于光纤阵列的二维微角位移传感器 [Based on Fiber Array Two-Dimensional Micro Angular Displacement Sensor]
- Journal: 光学学报 (Acta Optica Sinica)
- Volume: 卷 (Volume) - The specific volume number is not provided in the excerpts.
Keywords
- 光纤光学 / Fiber Optics
- 光纤传感器 / Fiber Sensor
- 角位移传感器 / Angular Displacement Sensor
- 光纤阵列 / Fiber Array
- 高斯光束 / Gaussian Beam
- 光路损耗 / Optical Path Loss
Brief
This article presents a two-dimensional micro angular displacement sensor based on a cross-shaped fiber array probe, where the angular displacement is determined by Gaussian fitting of the light intensity received by each fiber to find the reflected light spot's center, and it also proposes a normalization method for optical path loss to improve measurement accuracy.
Summary
This article presents a novel two-dimensional micro-angular displacement sensor using a fiber optic array in a cruciform arrangement. The sensor measures angular displacement by analyzing the Gaussian fitted light intensity received by each fiber in response to the movement of a reflected light spot from a tilted triangular prism. This approach is designed to be less sensitive to changes in surface reflection, light source fluctuations, and ambient light. The authors also address the problem of varying light loss in different receiving fibers by proposing a normalization correction method which experimentally improves the measurement resolution. The system's resolution is also analyzed in relation to the light spot size and detector noise. Experimental results confirm the feasibility and improved accuracy of the sensor after implementing the proposed correction method.
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