Abstract
This letter presents the theoretical and experimental analysis of a magnetic field sensor based on the interaction of a conical frustum of magnetostrictive composite with an embedded fiber Bragg grating (FBG) along its axis. The possibility of tailoring a nonuniform-induced strain along the FBG through magnetostriction enables the inference of the magnetic field with both wavelength shift and optical power measurements. Strain coupling interaction and power reflectance of the FBG were modeled and showed a very good agreement with experimental data.
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