A novel configuration for the transducer of magnetostrictive fiber-optic interferometric sensors

Changhai Shi; Jianping Chen; Xinwan Li; Ailun Ye; Junhe Zhou; Yi Zhang; Qing Xue; Lin Hong

doi:10.1117/12.635609

5 December 2005 A novel configuration for the transducer of magnetostrictive fiber-optic interferometric sensors

Changhai Shi, Jianping Chen, Xinwan Li, Ailun Ye, Junhe Zhou, Yi Zhang, Qing Xue, Lin Hong

Proceedings Volume 6019, Passive Components and Fiber-based Devices II; 60191D (2005) https://doi.org/10.1117/12.635609
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China

Abstract

A novel configuration for the transducer of magnetostrictive fiber-optic sensors was proposed and implemented. It is composed of a rectangle and two half-circles. The transducer with the novel configuration has not only higher sensitivity than that of traditional configurations, but good directivity. The magnetostriction was analyzed compared with that of cylindrical transducers. It is shown that the system sensitivity can be improved by increasing the long-side of rectangle and shortening the perimeters of the two half-circles. Two transducers with cylindrical and racetrack configurations were fabricated. Moreover, an experimental setup to measure the low-intensity magnetic field detection responses was built up. Experimental results verified the analysis. For its good directivity, three of them can be compounded as a vector magnetometer to measure three orthogonal components of magnetic field.

Citation Download Citation

Changhai Shi, Jianping Chen, Xinwan Li, Ailun Ye, Junhe Zhou, Yi Zhang, Qing Xue, and Lin Hong "A novel configuration for the transducer of magnetostrictive fiber-optic interferometric sensors", Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60191D (5 December 2005); https://doi.org/10.1117/12.635609

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