Magnetostrictive Fiber Sensors as Total Field Magnetometers

Q4 Engineering
R. Dougenik, R. Lacomb, F. Jain
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引用次数: 0

Abstract

A novel magnetostrictive thin film fiber sensor is presented which can be utilized in an interferometric architecture. The magnetostrictive fiber sensor utilizes novel fiber and thin film technology to achieve high sensitivity in the sub-nanotesla regime. The base sensor architecture utilizes optical fiber wound in a novel low stress flat coil resembling a record, coated with a thin magnetostrictive film. Two prototype variants were fabricated, incorporating FeCo sputtered films of different thicknesses on 4 μm polyimide jacket single mode fiber. The sensors were incorporated into a fiber optic interferometric measurement apparatus to characterize time-varying magnetic field sensitivity. Device results are presented which demonstrate sensitivity is a function of film thickness. The experimental data exhibited a two-order magnitude sensitivity improvement as the thin film thickness was doubled. Sensitivity projections are made based on film thickness.
作为全场磁强计的磁致伸缩光纤传感器
提出了一种可用于干涉结构的新型磁致伸缩薄膜光纤传感器。磁致伸缩光纤传感器利用新型光纤和薄膜技术在亚纳米特斯拉区域实现高灵敏度。基础传感器结构利用缠绕在一个新型低应力扁平线圈中的光纤,该线圈类似于一个记录,并涂有一层磁致伸缩薄膜。制造了两种原型变体,在4μm聚酰亚胺护套单模光纤上掺入不同厚度的FeCo溅射膜。传感器被结合到光纤干涉测量设备中,以表征时变磁场灵敏度。给出了器件结果,证明灵敏度是薄膜厚度的函数。实验数据显示,随着薄膜厚度的增加,灵敏度提高了两个数量级。灵敏度投影是根据薄膜厚度进行的。
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来源期刊
International Journal of High Speed Electronics and Systems
International Journal of High Speed Electronics and Systems Engineering-Electrical and Electronic Engineering
CiteScore
0.60
自引率
0.00%
发文量
22
期刊介绍: Launched in 1990, the International Journal of High Speed Electronics and Systems (IJHSES) has served graduate students and those in R&D, managerial and marketing positions by giving state-of-the-art data, and the latest research trends. Its main charter is to promote engineering education by advancing interdisciplinary science between electronics and systems and to explore high speed technology in photonics and electronics. IJHSES, a quarterly journal, continues to feature a broad coverage of topics relating to high speed or high performance devices, circuits and systems.
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