18 June 2007 Influences of linear birefringence on bulk glass current sensors with return-back optical paths
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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.
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Zhengping Wang, Xiaoyu Liu, Zongjun Huang, "Influences of linear birefringence on bulk glass current sensors with return-back optical paths", Proc. SPIE 6616, Optical Measurement Systems for Industrial Inspection V, 66161Q (18 June 2007); doi: 10.1117/12.723716; https://doi.org/10.1117/12.723716
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