Abstract

We report a novel polarimetric fiber laser sensor for magnetic-field–current measurement that is stable to variation of temperature and strain because it employs a Faraday rotating mirror. We obtained a sensitivity of 10.24 kHz/A with good linearity and greatly improved the signal-to-noise ratio by reducing the number of laser cavity modes with the help of a saturable absorber.

© 1996 Optical Society of America

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