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Proceedings Paper

Temperature field and influence analysis of magneto-optical modulation system
Author(s): Wei Cai; Youan Xu; Zhiyong Yang
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Paper Abstract

In the actual operation of the magneto-optical modulation system based on the Faraday effect, the internal temperature change will cause the drift of the Faraday rotation angle signal, which is a key problem that further improves the accuracy of the system. In this paper, the system heat transfer model is constructed by in-depth analysis of the system heat generation mechanism. Then the finite element simulation software is used to establish the equilibrium process of the system temperature field, and the internal temperature change of the magneto-optical material is analyzed. Finally, the typical paramagnetic material TGG is taken as an example. Analyze the effect of temperature changes on the Faraday rotation angle and the accuracy of the magneto-optical modulation system. The results show that with the increase of working time, the internal temperature of the system gradually increases, causing the attenuation of the magnetic field amplitude and the decrease of the Verdet constant of the magneto-optical material. Both of them work together on the solution of the Faraday rotation angle, which ultimately affects the overall accuracy of the magnetooptical modulation system.

Paper Details

Date Published: 17 May 2019
PDF: 6 pages
Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111702Y (17 May 2019); doi: 10.1117/12.2533776
Show Author Affiliations
Wei Cai, Xi’an High-Tech Institute (China)
Xidian Univ. (China)
Youan Xu, Xi’an High-Tech Institute (China)
Zhiyong Yang, Xi’an High-Tech Institute (China)

Published in SPIE Proceedings Vol. 11170:
14th National Conference on Laser Technology and Optoelectronics (LTO 2019)
Jianqiang Zhu; Weibiao Chen; Zhenxi Zhang; Minlin Zhong; Pu Wang; Jianrong Qiu, Editor(s)

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