Published July 2009 | Version v1
Journal article Metadata-only

Magnetic field sensor based on double-sided polished fibre-Bragg gratings

Creators

  • 1. Department of Electrical Engineering, Feng Chia University, 100 Wenhwa Rd, Taichung, Taiwan (China)
  • 2. Graduate Institute of Electrical and Communications Engineering, PhD Program, Feng Chia University, 100 Wenhwa Rd., Taichung, Taiwan (China)

Description

A new magnetic field sensor based on double-sided polished fibre-Bragg gratings (FBGs) coated with an iron thin film for measuring magnetic flux density was experimentally demonstrated with the sensitivity of 25.6 nm T−1. The sensing mechanism is based on the Bragg wavelength shift as the magnetic field is measured by the proposed sensing head. Results of this study present the intensity of the reflected optical signal as a function of the applied strain on the FBG. This paper shows that an improved method for sensing the wavelength shift with changes in external magnetic field is developed by use of the double-sided polished FBGs

Availability note (English)

Available from http://dx.doi.org/10.1088/0957-0233/20/7/075202

Additional details

Identifiers

DOI
10.1088/0957-0233/20/7/075202;
PII
S0957-0233(09)98718-5;

Publishing Information

Journal Title
Measurement Science and Technology
Journal Volume
20
Journal Issue
7
Journal Page Range
[6 p.]
ISSN
0957-0233
CODEN
MSTCEP

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45005545
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
FIBERS; FLUX DENSITY; GRATINGS; IRON; MAGNETIC FIELDS; MAGNETIC FLUX; SENSITIVITY; SENSORS; SIGNALS; STRAINS; THIN FILMS; WAVELENGTHS
Descriptors DEC
ELEMENTS; FILMS; METALS; TRANSITION ELEMENTS