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    • 5. 发明授权
    • Ultrasensitive magnetic sensor with magneto-optically active material with high verdet constant
    • 超灵敏磁传感器,具有高verdet常数的磁光材料
    • US08575927B2
    • 2013-11-05
    • US12745343
    • 2009-01-16
    • Hitoshi YamadaKazuhiro ShintaniAkinobu FujiiNorio SatoThierry VerbiestAndre PersoonsPavel PolynkinNasser Peyghambarian
    • Hitoshi YamadaKazuhiro ShintaniAkinobu FujiiNorio SatoThierry VerbiestAndre PersoonsPavel PolynkinNasser Peyghambarian
    • G01R33/02
    • G02F1/0036G01R33/032G01R33/0322
    • 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. This invention has the following three major aspects each being an embodiment of the present invention: 1. Sensing material: a conjugate polymer such as polythiophene and/or a polymer containing superparamagnetic nanoparticles that exhibits a giant Faraday rotation. 2. Magnetic field probe that incorporates the above polymer or polymer/nanoparticle composite, e.g. in the form of a film. 3. Sensor: The sensor combines an optical fiber-based Sagnac interferometer and the above magnetic field probe.
    • 描述了用于这种系统的磁场传感器系统和材料的高分辨率传感器。 传感器系统使用无机和/或有机磁光学材料测量磁场,例如, 并具有基于法拉第旋转的干涉仪。 聚合物材料优选为膜的形式。 聚合物材料具有对磁场敏感的光学性质,例如, 法拉第旋转效果。 本发明还提供一种包含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一起使用或与镜子一起使用。 特别地,本发明提供一种光纤Sagnac干涉仪来测量光的偏振平面的旋转。 本发明提供了一种具有被施加到磁场感测的无源相位偏移的基于光纤或镜像的Sagnac干涉仪。 本发明具有以下三个主要方面,每个都是本发明的实施方案:1.感测材料:共轭聚合物如聚噻吩和/或含有超顺磁纳米颗粒的聚合物,其显示出巨大的法拉第旋转。 包含上述聚合物或聚合物/纳米颗粒复合材料的磁场探针,例如。 以电影的形式。 3.传感器:传感器结合了基于光纤的Sagnac干涉仪和上述磁场探头。
    • 6. 发明申请
    • ULTRASENSITIVE MAGNETIC SENSOR BASED ON GIANT FARADAY ROTATION
    • 超声波传感器基于巨大的法拉第旋转
    • US20120001625A1
    • 2012-01-05
    • US12745343
    • 2009-01-16
    • Hitoshi YamadaKazuhiro ShintaniAkinobu FujiiNorio SatoThierry VerbiestAndre PersoonsPavel PolynkinNasser Peyghambarian
    • Hitoshi YamadaKazuhiro ShintaniAkinobu FujiiNorio SatoThierry VerbiestAndre PersoonsPavel PolynkinNasser Peyghambarian
    • G01R33/02
    • G02F1/0036G01R33/032G01R33/0322
    • 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. This invention has the following three major aspects each being an embodiment of the present invention: 1. Sensing material: a conjugate polymer such as polythiophene and/or a polymer containing superparamagnetic nanoparticles that exhibits a giant Faraday rotation. 2. Magnetic field probe that incorporates the above polymer or polymer/nanoparticle composite, e.g. in the form of a film. 3. Sensor: The sensor combines an optical fiber-based Sagnac interferometer and the above magnetic field probe.
    • 描述了用于这种系统的磁场传感器系统和材料的高分辨率传感器。 传感器系统使用无机和/或有机磁光学材料测量磁场,例如, 并具有基于法拉第旋转的干涉仪。 聚合物材料优选为膜的形式。 聚合物材料具有对磁场敏感的光学性质,例如, 法拉第旋转效果。 本发明还提供一种包含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一起使用或与镜子一起使用。 特别地,本发明提供一种光纤Sagnac干涉仪来测量光的偏振平面的旋转。 本发明提供了一种具有被施加到磁场感测的无源相位偏移的基于光纤或镜像的Sagnac干涉仪。 本发明具有以下三个主要方面,每个都是本发明的实施方案:1.感测材料:共轭聚合物如聚噻吩和/或含有超顺磁纳米颗粒的聚合物,其显示出巨大的法拉第旋转。 包含上述聚合物或聚合物/纳米颗粒复合材料的磁场探针,例如, 以电影的形式。 3.传感器:传感器结合了基于光纤的Sagnac干涉仪和上述磁场探头。