학술논문
A Low-Frequency Magnetic Field Sensor Based on Fiber Bragg Gratings
Document Type
article
Author
Source
Photonics, Vol 9, Iss 2, p 102 (2022)
Subject
Language
English
ISSN
2304-6732
Abstract
A new type of low-frequency magnetic-field sensor based on fiber Bragg gratings (FBGs) was experimentally demonstrated for measuring the DC to low-frequency magnetic field. The operating mechanism of this AC magnetic sensor is based on the strain exerted by a loaded magnet on the sensing structure, which causes center-wavelength shifts of FBG. The achieved sensitivity was 8.16 pm/G with a resolution of 3 Gauss at ambient conditions. The proposed FBG magnetic sensor is easy to use, compact, and suitable for DC to low-frequency magnetic sensing applications.