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Proceedings Paper

Problems of linear birefringence in optical glass current transformers with return-back optical paths
Author(s): Zhengping Wang; Xiaoyu Liu; Zongjun Huang
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Paper Abstract

The effects of linear birefringence (LB) upon Bulk Glass Optical Current Transformers (BGOCTs) with return-back optical path designs, such as the Orthoconjugate Reflection (OCR)-typed, the Direct Reflection (DR)-typed and the Roof-prism Reflection (RPR)-typed BGOCT design, are theoretically analyzed and compared with that of the BGOCT with a single-loop optical path in this paper. The results show that the return-back dual-loop current sensing designs with conventional signal processing scheme of "-/+" cannot eliminate the harmful effects of the LB thoroughly, if suitable signal processing schemes which can separate the LB from Faraday effect are not used.

Paper Details

Date Published: 22 February 2006
PDF: 5 pages
Proc. SPIE 6134, Light-Emitting Diodes: Research, Manufacturing, and Applications X, 61340S (22 February 2006); doi: 10.1117/12.647672
Show Author Affiliations
Zhengping Wang, Harbin Engineering Univ. (China)
Xiaoyu Liu, Harbin Engineering Univ. (China)
Zongjun Huang, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 6134:
Light-Emitting Diodes: Research, Manufacturing, and Applications X
Klaus P. Streubel; H. Walter Yao; E. Fred Schubert, Editor(s)

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