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Keywords: Current measurement, fiber-optic current sensor, current transducer, optical fiber devices, Faraday effect, electro process, high power conversion. At the coil end the light waves are reflected and then retrace the optical path y orthogonal linear light waves x 90° splice phase phase modulator retarder source photo diode left and right circular light waves elliptical-core fiber signal processor bus bar delay sensing fiber coil out ∆φR fiber capillary ∆φΡ epoxy strip Fig.
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