All-fiber optical magnetic-field sensor based on Faraday rotation in highly terbium-doped fiber
2010; Optica Publishing Group; Volume: 18; Issue: 6 Linguagem: Inglês
10.1364/oe.18.005407
ISSN1094-4087
AutoresLi‐Peng Sun, Shibin Jiang, John R. Marciante,
Tópico(s)Geophysics and Sensor Technology
ResumoAn all-fiber optical magnetic field sensor is demonstrated. It consists of a fiber Faraday rotator and a fiber polarizer. The fiber Faraday rotator uses a 2-cm-long section of 56-wt.%-terbium-doped silicate fiber with a Verdet constant of -24.5 rad/(Tm) at 1053 nm. The fiber polarizer is Corning SP1060 single-polarization fiber. The sensor has a sensitivity of 0.49 rad/T and can measure magnetic fields from 0.02 to 3.2 T.
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