Strain of optic-fiber/giant magnetostrictive film structure in magnetic field by finite element analysis

Jiafei Hu; Mengchun Pan; Jianguang Xin; Dixiang Chen

doi:10.1117/12.806372

2 February 2009 Strain of optic-fiber/giant magnetostrictive film structure in magnetic field by finite element analysis

Jiafei Hu, Mengchun Pan, Jianguang Xin, Dixiang Chen

Author Affiliations +

Proceedings Volume 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications; 71570V (2009) https://doi.org/10.1117/12.806372
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

Abstract

The magnetostrictive transducer is the most important part of the optic-fiber magnetic field sensor, and the optic-fiber/giant magnetostrictive(GMS) film coupled structure is a novel coupling form of the magnetostrictive transducer. Always we analyze the coupled structure based on the entire coupled structure being sputtered GMS material without tail-fibers. In practical application, the coupled structure has tail-fibers without films at two ends. When the entire coupled structure is immersed in the detected magnetic field, the detected magnetic field causes the GMS film strain then causing optic-fiber strain. This strain transmission process is different from it in the coupled structure entirely with GMS films without tail-fibers. The strain transmission relationship can be calculated theoretically in the coupled structure without tail-fibers, but it's complicated to theoretically calculate the strain transmission relationship in the coupled structure with tail-fibers. After large numbers of calculations and analyses by ANSYS software, we figure out some relationships of the two strain transmission processes in the respective structures and the stress distribution in the tail-fibers. These results are helpful to the practical application of the optic-fiber/ GMS film coupled structure.

Citation Download Citation

Jiafei Hu, Mengchun Pan, Jianguang Xin, and Dixiang Chen "Strain of optic-fiber/giant magnetostrictive film structure in magnetic field by finite element analysis", Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 71570V (2 February 2009); https://doi.org/10.1117/12.806372

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KEYWORDS

Magnetism

Magnetic sensors

Transducers

Finite element methods

Interferometers

Optical components

Sensor technology

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