Share Email Print
cover

Proceedings Paper

Magnetic field sensor based on D-shaped long period fiber gratings
Author(s): Chuen-Lin Tien; Chang-Chou Hwang; Wen-Feng Liu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present a new magnetic field sensor based on D-shaped long-period fiber grating (D-LPFG). Iron thin-film was coated on the polished surface of an LPFG to function as a sensing head. Different levels of magnetic field caused a shift in the grating loss-dip wavelength shift. The sensing section of a D-LPFG causes a change in the effective refractive index both of the core mode and co-propagation cladding modes in response to the different levels of the applied magnetic field. The maximum shift in wavelength of 36 nm was obtained in the case of a magnetic field of 153 kA/m.

Paper Details

Date Published: 23 November 2009
PDF: 6 pages
Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 750811 (23 November 2009); doi: 10.1117/12.837870
Show Author Affiliations
Chuen-Lin Tien, Feng Chia Univ. (Taiwan)
Chang-Chou Hwang, Feng Chia Univ. (Taiwan)
Wen-Feng Liu, Feng Chia Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7508:
2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
YanBiao Liao; Anbo Wang; Tingyun Wang; Yukihiro Ishii, Editor(s)

© SPIE. Terms of Use
Back to Top