Modeling of magnetostrictive optical modulator for application as a magnetic field sensor
2017
The work presents a new proposition of an integrated optical device applicable as optical magnetometer. The studies of an optical waveguide formed by thermally induced static stress (ISS) and modulation achieved by magnetostriction of a TbCo2 thin film over Bismuth Germanate (BGO) are shown. The magnetooptical effect and the modal optical analyses were investigated for the optical modulation purpose. The analyses were performed by simulation software based on Finite Elements Method (FEM). The optical propagation characteristics of the magnetooptically disturbed guided mode in stress-induced waveguide were evaluated indicating the viability of proposed device application as magnetometer.
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