Intensity-modulated rotation angle sensor based on multi-core fibers

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-09-19 DOI:10.1016/j.yofte.2025.104418

Xiaodong Wen , Zhenzhen Wang , Xiaoxin Ma , Haoning Gao , Shichang Ma , Mingyu Liu , Yan Bai

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引用次数: 0

Abstract

An intensity-modulated rotation angle sensor based on eccentric dual-core fiber (EDCF) and seven-core fiber (SCF) is proposed and demonstrated. The sensor configuration comprises an EDCF and a cascaded fan-out SCF. Input light is coupled from the eccentric core of the EDCF into the outer cores of the SCF for transmission. The output light intensities from the seven single-mode fibers (SMFs) of the fan-out are detected by photodiodes to quantify the optical power in each core of the SCF. Both simulation and experimental results verify a correlation between the light intensity distributions in the outer cores of the SCF and the rotational angle of the EDCF. Lorentzian fitting is applied to the intensity profiles of the six surrounding cores of the SCF at each angular position. By extracting the peak horizontal coordinates from these fittings, a linear relationship is established between these coordinates and the rotation angle. The sensor achieves full 360° angular coverage with a resolution of 10° and a sensitivity of 0.0168 core number/°. Featuring a simple structure and wide measurement range, this sensor exhibits significant potential for applications in industrial automation and full-range angle monitoring scenarios.

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基于多芯光纤的强度调制转角传感器

提出并演示了一种基于偏心双芯光纤（EDCF）和七芯光纤（SCF）的调强转角传感器。传感器配置包括一个EDCF和一个级联扇出SCF。输入光从EDCF的偏心芯耦合到SCF的外芯进行传输。通过光电二极管检测扇出的7条单模光纤（smf）的输出光强度，以量化SCF每个核心的光功率。仿真和实验结果均证实了SCF外核的光强分布与EDCF的旋转角度之间的相关性。采用洛伦兹拟合方法对SCF周围六个核在每个角位置的强度分布图进行拟合。通过提取这些接头的峰值水平坐标，建立这些坐标与旋转角度之间的线性关系。该传感器实现全360°角覆盖，分辨率为10°，灵敏度为0.0168芯数/°。该传感器结构简单，测量范围广，在工业自动化和全角度监测场景中具有巨大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.