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A novel bulk-glass optical current transducer having an adjustable multiring closed-optical-path

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5 Author(s)
Yi, B. ; Centre for Electr. Power Eng., Strathclyde Univ., Glasgow, UK ; Cruden, A. ; Madden, I. ; Mcdonald, James R
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This paper describes a new design of a bulk-type Faraday effect-based optical current transducer. The sensing element is a four-piece bulk optic structure which enables the polarized light to circulate around the conductor a number of times and increases the sensitivity several times. The design makes for ease of manufacturing and alignment. The number of closed-optical-paths can be changed easily by adjusting the incident point of light. The principle of the design is described and the simulation and experimental results are presented

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Instrumentation and Measurement, IEEE Transactions on  (Volume:47 ,  Issue: 1 )