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Modified sensing element using spun fiber with high birefringence for current sensor

Keywords:

V.P. Gubin – Ph.D. (Phys.-Math.), Senior Researcher, Fryazino branch of the Kotel’nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences
S.K. Morshnev – Dr.Sc. (Phys.-Math.), Professor, Leading Researcher, Fryazino branch of the Kotel’nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences
Y.V. Przhiyalkovskiy – Post-graduate Student, Kotel’nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: yankus.p@gmail.com
N.I. Starostin – Ph.D. (Phys.-Math.), Head of the laboratory, Fryazino branch of the Kotel’nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences


The modified sensing element based on Hi-Bi spun fiber for fiber-optical current sensor is proposed. It allows to minimize interferometer contrast decrease if radiation polarization state ellipticity in spun fiber is low. It is shown, that magneto-optical sensitivity decreases with spectral average polarization state ellipticity. Experimental results that confirm the theoretical analysis are presented.
References:
  1. Przhiyalkovskij Ja.V., Morshnev S.K., Starostin N.I., Gubin V.P. Rasprostranenie shirokopolosnogo opticheskogo izlucheniya v spun-volokne s vy'sokim dvulucheprelomleniem // Kvantovaya e'lektronika. 2013.T. 43. № 2. S. 167–173.

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