Optical fiber for a sensor and a power device monitoring system
AssigneesKabushiki Kaisha Toyota Jidoshokki, Institute of National Colleges of Tech, Japan, National University Corporation Kagawa University
InventorsKo Imaoka, Yoshifumi Suzaki, Hiromu Iwata, Kiyoshi Nakagawa
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Abstract
An optical fiber for a sensor that can measure a current or a voltage precisely is provided. The optical fiber for the sensor 10 comprises: an FBG 12 wherein a refractive index of a core changes periodically; a metal layer 13 for sheathing the FBG 12; and a pair of electrodes 14 and 15 provided at the metal layer 13. The electrodes 14 and 15 are connected to an object to be measured in desired positions. Current flowing through the metal layer 13 is calculated based on variation in Bragg wavelength of the FBG 12.
Claims14
An optical fiber for a sensor comprising:
- a Fiber Bragg Grating (FBG) wherein a refractive index of a core of the optical fiber for the sensor changes periodically along a direction in which incident light propagates;
- a metal layer for sheathing the FBG;
- and
- a pair of electrodes provided at the metal layer.
Dependencies are inferred from the claim text.