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Ultrasensitive magnetic sensor with magneto-optically active material with high verdet constant

机译:具有灵动常数高的磁光活性材料的超灵敏磁传感器

摘要

A high-resolution sensor of magnetic field sensor system and materials for use in such a system are described. The sensor systems measure a magnetic field using inorganic and/or organic magneto-optically active materials, e.g. polymer material and have an interferometer based on Faraday rotation. The polymer material is preferably in the form of a film. The polymer material has an optical property that is sensitive to the magnetic field, e g the Faraday rotation effect. The present invention also provides a sensor head structure comprising the above polymer material. The sensor head may be designed for use with an optical fiber or with mirrors In particular the present invention provides a fiber Sagnac interferometer to measure the rotation of polarized plane of light. The present invention provides a fiber or mirror based Sagnac interferometer with passive phase bias applied to magnetic field sensing.
机译:描述了一种磁场传感器系统的高分辨率传感器以及用于这种系统的材料。传感器系统使用无机和/或有机磁光活性材料(例如,磁性材料)来测量磁场。聚合物材料,并具有基于法拉第旋转的干涉仪。聚合物材料优选为膜形式。聚合物材料具有对磁场敏感的光学特性,例如法拉第旋转效应。本发明还提供了一种包括上述聚合物材料的传感器头结构。传感器头可以设计成与光纤或镜子一起使用。特别是,本发明提供了一种光纤萨涅克干涉仪,用于测量偏振光平面的旋转。本发明提供了一种基于光纤或反射镜的萨格纳克干涉仪,其中将无源相位偏置应用于磁场感测。

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