Theoretical analysis of measurement errors caused by the imperfection of the sensing optical loop in a glass block Faraday effect current sensor has been presented. The experimental results with the fabricated sensor which was designed to achieve a closed homogeneous and isotropic optical path show the importance of the perfectly isotropic and closed loop, in accordance with the theoretical consideration.
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Yoshino, T., Takahashi, Y. & Gojyuki, M. Imperfection errors in glass block faraday effect current sensor. Optical Review 4, A108 (1997). https://doi.org/10.1007/BF02936005
- Faraday effect
- Ampere’s law
- optical sensing
- current sensor
- thin film
- dielectric coating