Wavelength dependence of the sensitivity of a bulk-glass optical current transformer

The wavelength dependence of the sensitivity of a bulk-glass optical current transformer is theoretically analyzed, simulated numerically and verified experimentally. The results show that the wavelength dependence will cause obvious sensitivity fluctuation of the system because of the existence of...

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Bibliographic Details
Published in:Optics and laser technology 2006-03, Vol.38 (2), p.87-93
Main Authors: Wang, Zheng Ping, Bo Li, Qing, Qi, Yi, Jun Huang, Zong, Hui Shi, Jin
Format: Article
Language:English
Subjects:
Applied sciences
Dispersion
Electrical engineering. Electrical power engineering
Exact sciences and technology
Faraday effect
Optical current transformer
Power electronics, power supplies
Sensing head
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Summary:The wavelength dependence of the sensitivity of a bulk-glass optical current transformer is theoretically analyzed, simulated numerically and verified experimentally. The results show that the wavelength dependence will cause obvious sensitivity fluctuation of the system because of the existence of the dispersions of the reflection-induced retardance, Verdet constant, and the linear birefringence inside the bulk-glass current sensing head. Therefore, it is necessary to stabilize the driving current and the ambient temperature of the optical source of the sensor or compensate the harmful effects caused by wavelength variation. These results might be useful for researchers and designers working in the optical current transformer techniques area.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2004.10.007