Abstract

A distributed optical fiber sensor is introduced which is capable of quantifying multiple magnetic fields along a 1 km sensing fiber with a spatial resolution of 1 m. The operation of the proposed sensor is based on measuring the magnetorestrictive induced strain of a nickel wire attached to an optical fiber. The strain coupled to the optical fiber was detected by measuring the strain-induced phase variation between the backscattered Rayleigh light from two segments of the sensing fiber. A magnetic field intensity resolution of 0.3 G over a bandwidth of 50–5000 Hz was demonstrated.

© 2014 Optical Society of America

Optical fiber magnetic field sensors with ceramic magnetostrictive jackets

Miroslav Sedlar, Ivan Paulicka, and Michael Sayer
Appl. Opt. 35(27) 5340-5344 (1996)

Magnetic field sensitivity of an optical fiber with magnetostrictive jacket

J. Jarzynski, J. H. Cole, J. A. Bucaro, and C. M. Davis
Appl. Opt. 19(22) 3746-3748 (1980)

Optical fiber magnetic field sensors with TbDyFe magnetostrictive thin films as sensing materials

Minghong Yang, Jixiang Dai, Ciming Zhou, and Desheng Jiang
Opt. Express 17(23) 20777-20782 (2009)

Heterogeneous integrated optical fiber with side nickel core for distributed magnetic field sensing

Yunzhe Gu, Fufei Pang, Mengshi Zhu, Yi Yang, Yi Tang, Liang Zhang, Heming Wei, and Tingyun Wang
Opt. Express 32(5) 7540-7552 (2024)

Distributed optical fiber magnetic field sensor based on polarization-sensitive OFDR

Yi Tang, Mengshi Zhu, Fufei Pang, Heming Wei, Liang Zhang, Wei Chen, and Tingyun Wang
Opt. Express 32(7) 11726-11736 (2024)