Temperature compensation for optical current sensors

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作者：
University of Strathclyde, Rolls Royce Univ. Technol. Ctr. E., Department of Electrical Engineering, 204 George Street, Glasgow G1 1XW, United Kingdom [1 ]
不详 [2 ]
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来源：
Opt Eng | / 10卷 / 1699-1707期
关键词：
Electric current measurement - Electric fields - Faraday effect - Fiber optic sensors - Light polarization - Magnetic fields - Magnetooptical devices - Optical rotation - Spurious signal noise - Thermal effects;
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摘要：
An analysis of an optical current transducer (OCT) considering in particular the influence of temperature induced variations in the Verdet constant is presented. The analysis is supported by an experimental evaluation of a prototype OCT over a range of operating temperatures and current values and concludes with a laboratory demonstration of a temperature compensation scheme that improves the measurement precision to better than 0.7%.
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