Magnetic field sensing using polarization properties in magneto-optical fiber Bragg gratings

Yang Su; Yong Zhu; Yuquan Li; Xiaoxin Yi

doi:10.1117/1.3602881

1 July 2011 Magnetic field sensing using polarization properties in magneto-optical fiber Bragg gratings

Yang Su, Yong Zhu, Yuquan Li, Xiaoxin Yi

Author Affiliations +

Funded by: National Natural Science Foundation of China, China Postdoctoral Science Foundation

Optical Engineering, Vol. 50, Issue 7, 074401 (July 2011). https://doi.org/10.1117/1.3602881

Abstract

Fiber Bragg gratings have has been widely used in sensors. We analyze the transmission and polarization properties of magneto-optical fiber Bragg gratings based on coordinate conversion. The simulations demonstrate the influence of magnetic field intensity on the transmission spectrum, the polarization properties by the coupled mode theory, and the Jones formalism. The results show that while a small magnetic field can hardly be detected in the grating amplitude response, it leads to significant polarization properties such as the third normalized Stokes parameter, polarization dependent loss, and ellipticity. We demonstrate that these polarization properties contain information about the magnetic field and can thus be used for magnetic field sensing purposes. The sensitivity and dynamic range depend on the physical parameters of the grating.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yang Su, Yong Zhu, Yuquan Li, and Xiaoxin Yi "Magnetic field sensing using polarization properties in magneto-optical fiber Bragg gratings," Optical Engineering 50(7), 074401 (1 July 2011). https://doi.org/10.1117/1.3602881

Published: 1 July 2011

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