Optical fiber-based probe for detection of magnetic field

Norbert Tarjányi; Ivan Melo; Daniel Kácik

doi:10.1117/12.2665538

31 May 2023 Optical fiber-based probe for detection of magnetic field

Norbert Tarjányi, Ivan Melo, Daniel Kácik

Proceedings Volume 12572, Optical Sensors 2023; 125721C (2023) https://doi.org/10.1117/12.2665538
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Conference Poster

Abstract

In the contribution, we present the design of a probe responding to the presence of a magnetic field, consisting of a capillary fiber filled with magnetic fluid and connected to polarization-maintaining optical fibers on both sides. Magnetic fluid in the capillary responds to a transverse magnetic field by changing its birefringence. As a result, there is a change in the polarization state of the optical wave passing through the fluid in the capillary, and this change is registered using an optical fiber plane polarizer placed between the fiber coming out of the capillary and the optical spectrum analyzer. A relationship between the magnitude of the magnetic field flux density and the spectral change of the signal detected by the optical spectrum analyzer is observed. The result indicates a strong potential of a magnetic fluid in the field of the optical fiber sensors of magnetic fields

Citation Download Citation

Norbert Tarjányi, Ivan Melo, and Daniel Kácik "Optical fiber-based probe for detection of magnetic field", Proc. SPIE 12572, Optical Sensors 2023, 125721C (31 May 2023); https://doi.org/10.1117/12.2665538

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