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Proceedings Paper

Influences of linear birefringence on bulk glass current sensors 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 Sensors (BGOCSs) 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 BGOCS design, are theoretically analyzed and compared with that of the BGOCS 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: 18 June 2007
PDF: 5 pages
Proc. SPIE 6616, Optical Measurement Systems for Industrial Inspection V, 66161Q (18 June 2007); doi: 10.1117/12.723716
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. 6616:
Optical Measurement Systems for Industrial Inspection V
Wolfgang Osten; Christophe Gorecki; Erik L. Novak, Editor(s)

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