Abstract
A gold metallic grating fabricated onto magnetostrictive material (Tb0.3Dy0.7Fe2.0) and its application to current sensing has been proposed. The gold metallic grating is fabricated to a Λ=220nm by using a focused ion beam (FIB) method and the metallic grating has integrated structure onto Tb0.3Dy0.7Fe2.0. Silica gel has good flexibility and it is using as wavelength layer between the gold metallic grating and gold layer on the Tb0.3Dy0.7Fe2.0. The metallic grating is placed in direct current solenoid and measured the reflection spectrum of the structure through fiber, and it causes a rapid and reversible response in wavelength shift in the visible wavelengths. This pronounced response introduces a novel current detection scheme.
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