Problems of linear birefringence in optical glass current transformers with return-back optical paths

Zhengping Wang D.V.M.; Xiaoyu Liu; Zongjun Huang

doi:10.1117/12.647672

22 February 2006 Problems of linear birefringence in optical glass current transformers with return-back optical paths

Zhengping Wang D.V.M., Xiaoyu Liu, Zongjun Huang

Proceedings Volume 6134, Light-Emitting Diodes: Research, Manufacturing, and Applications X; 61340S (2006) https://doi.org/10.1117/12.647672
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

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.

Citation Download Citation

Zhengping Wang D.V.M., Xiaoyu Liu, and Zongjun Huang "Problems of linear birefringence in optical glass current transformers with return-back optical paths", Proc. SPIE 6134, Light-Emitting Diodes: Research, Manufacturing, and Applications X, 61340S (22 February 2006); https://doi.org/10.1117/12.647672

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