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Optimization of optical current sensor based on rare‐earth magneto‐optical glass
Author(s) -
Shen Yan,
Ge JinMing,
Liu RuiTong,
Fan Wei,
Yang YingXuan
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31550
Subject(s) - diamagnetism , sensitivity (control systems) , birefringence , materials science , optoelectronics , optics , doping , electronic engineering , magnetic field , physics , engineering , quantum mechanics
Abstract Compared to the present diamagnetic glass used in the sensing element of optical current sensors (OCSs), the high‐sensitivity characteristics of the rare‐earth magneto‐optical glass (REMOG) can significantly improve the performance of an REMOG sensing element. The optimization objective of this study was to enhance the sensitivity of the sensing element and reduce linear birefringence. Theoretical analysis and experimental data were combined to study the practical influences of a few factors, such as the size and spatial position of the glass, the wavelength of the incident light, and the rare‐earth doping concentration, on the sensitivity of an OCS sensing element. Finally, an optimal parameter combination was obtained. The experimental results showed that the response sensitivity of the REMOG sensing element is seven times the sensitivity using diamagnetic glass.