公开(公告)号：US20160377660A1

公开(公告)日：2016-12-29

申请号：US15187522

申请日：2016-06-20

Applicant: ABB Technology AG

Inventor： Georg Müller ,  Klaus Bohnert ,  Andreas Frank ,  Philippe Gabus

IPC: G01R15/24 ,  G01R19/32

CPC classification number: G01R15/241 ,  G01R15/246 ,  G01R15/247 ,  G01R19/32

Abstract: A fiber optic sensor and related method are described, with the sensor including a cross-coupling element in the optical path between a polarizing element and a sensing element, but separated from the sensing element itself; with the cross-coupling element generating a defined cross-coupling between the two orthogonal polarization states of the fundamental mode of a polarization maintaining fiber guiding light from the light source to the sensing element thus introducing a wavelength-dependent or temperature-dependent sensor signal shift to balance wavelength-dependent or temperature-dependent signal shifts due to other elements of the sensor, particularly signal shifts due to the wavelength dependence of the Faraday effect or the electro-optic effect constant.

Abstract translation: 描述了光纤传感器和相关方法，其中传感器包括在偏振元件和感测元件之间的光路中的交叉耦合元件，但是与感测元件本身分离; 交叉耦合元件在从光源到感测元件的保持光纤的基波模式的两个正交极化状态之间产生定义的交叉耦合，从而引入依赖于波长或依赖于温度的传感器信号 以平衡由于传感器的其他元件导致的波长依赖或温度依赖的信号偏移，特别是由于法拉第效应或电光效应常数的波长依赖性引起的信号偏移。

公开(公告)号：US10247761B2

公开(公告)日：2019-04-02

申请号：US15187522

申请日：2016-06-20

Applicant: ABB Technology AG

Inventor： Georg Müller ,  Klaus Bohnert ,  Andreas Frank ,  Philippe Gabus

IPC: G01R15/24 ,  G01R19/32

Abstract: A fiber optic sensor and related method are described, with the sensor including a cross-coupling element in the optical path between a polarizing element and a sensing element, but separated from the sensing element itself; with the cross-coupling element generating a defined cross-coupling between the two orthogonal polarization states of the fundamental mode of a polarization maintaining fiber guiding light from the light source to the sensing element thus introducing a wavelength-dependent or temperature-dependent sensor signal shift to balance wavelength-dependent or temperature-dependent signal shifts due to other elements of the sensor, particularly signal shifts due to the wavelength dependence of the Faraday effect or the electro-optic effect constant.