Abstract

A compact high-efficiency Faraday rotator is constructed which uses a single-mode flint glassfibre as the Faraday element and a small-diameter toroidal electric coil as the magnetic system.Using a fibre Faraday rotator as the polarization modulator and/or the polarization compensator,glucose solution in the 10 mm long fused silica cell is detected with a high resolution of0.01 g dl−1 in the widemeasurement range of 0–25 g dl−1.

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