公开(公告)号：US09977056B2

公开(公告)日：2018-05-22

申请号：US15028271

申请日：2014-10-09

Applicant: CNR—CONSIGLIO NAZIONALE DELLE RICERCHE ,  LEDA SRL, LABORATORIO DI ELETTRODINAMICA AVANZATA

Inventor： Gianluca Gagliardi ,  Fabrizio Marignetti

IPC: G01R29/12 ,  G01R15/24

CPC classification number: G01R15/24 ,  G01R29/12

Abstract: A method for measuring an alternating electric field is disclosed. The method includes realizing a first diffraction grating in a first location, in a core of a silica-based optical fiber, and measuring a peak reflection wavelength of the first diffraction grating. The method also includes positioning the optical fiber along a direction having a non-zero component of an electrical field generated by an alternating voltage to be measured, and coupling a substantially monochromatic light to said optical fiber surrounded by the electric field. The method further includes measuring a parameter dependent on a shift of the peak reflection wavelength due to intrinsic mechanical deformation or refractive index change of the material in which the optical fiber and the diffracting grating are realized due to the alternating electric field, and calculating a value of the electric field causing such a measured deformation or refractive index change.

公开(公告)号：US20160245846A1

公开(公告)日：2016-08-25

申请号：US15028271

申请日：2014-10-09

Applicant: CNR-CONSIGLIO NAZIONALE DELLE RICERCHE ,  LEDA SRL, LABORATORIO DI ELETTRODINAMICA AVANZATA

Inventor： Gianluca GAGLIARDI ,  Fabrizio MARIGNETTI

IPC: G01R15/24 ,  G01R29/12

CPC classification number: G01R15/24 ,  G01R29/12

Abstract: A method for measuring an alternating electric field is disclosed. The method includes realizing a first diffraction grating in a first location, in a core of a silica-based optical fiber, and measuring a peak reflection wavelength of the first diffraction grating. The method also includes positioning the optical fiber along a direction having a non-zero component of an electrical field generated by an alternating voltage to be measured, and coupling a substantially monochromatic light to said optical fiber surrounded by the electric field. The method further includes measuring a parameter dependent on a shift of the peak reflection wavelength due to intrinsic mechanical deformation or refractive index change of the material in which the optical fiber and the diffracting grating are realized due to the alternating electric field, and calculating a value of the electric field causing such a measured deformation or refractive index change.

Abstract translation: 公开了一种用于测量交变电场的方法。 该方法包括在第一位置，在二氧化硅基光纤的芯中实现第一衍射光栅，并测量第一衍射光栅的峰值反射波长。 该方法还包括沿着具有由要测量的交流电压产生的电场的非零分量的方向定位光纤，以及将基本上单色的光耦合到由电场包围的所述光纤。 该方法还包括测量由于由于交变电场而实现光纤和衍射光栅的材料的固有机械变形或折射率变化引起的峰值反射波长的偏移的参数，并且计算值 的电场引起这种测量的变形或折射率变化。