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Proceedings Paper

The effect of temperature characteristic of Faraday rotator to passively demodulated all optical fiber current transformers
Author(s): Yuekun Wang; Zhengping Wang; Shuai Sun
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Paper Abstract

In order to move signal detecting point to the most sensitive position and improve the immunity of the system at the same time, the scheme named passively demodulated all optical fiber current transformer (AOFCT) inserts a Faraday rotator of 22.5° rotation angle between fiber λ/4retarder and leading fiber. To improve the performance of this type of all fiber current transformer, after considering the temperature features of a large proportion of Faraday crystals, the effect of the Faraday rotator’s temperature properties on temperature stability of the passively demodulated AOFCTs are theoretically analyzed and numerically calculated. The results show that the errors induced by the Faraday rotators are beyond the requested values in the International Standard IEC 60044-8:2002 of International Electrotechnical Commission (IEC) and the State Standard of P.R.China GB/T 20840.8-2007. Finally, to solve this problem, some possible solutions are suggested.

Paper Details

Date Published: 26 November 2012
PDF: 8 pages
Proc. SPIE 8557, Optical Design and Testing V, 85571X (26 November 2012); doi: 10.1117/12.977935
Show Author Affiliations
Yuekun Wang, Harbin Engineering Univ. (China)
Zhengping Wang, Harbin Engineering Univ. (China)
Shuai Sun, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 8557:
Optical Design and Testing V
Yongtian Wang; Chunlei Du; Hong Hua; Kimio Tatsuno; H. Paul Urbach, Editor(s)

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