Optical fiber magnetic field sensors with TbDyFe magnetostrictive thin films as sensing materials.
Different from usually-used bulk magnetostrictive materials, magnetostrictive TbDyFe thin films were firstly proposed as sensing materials for fiber-optic magnetic field sensing characterization. By magnetron sputtering process, TbDyFe thin films were deposited on etched side circle of a fiber Bragg Grating (FBG) as sensing element. There exists more than 45pm change of FBG wavelength when magnet field increase up to 50 mT. The response to magnetic field is reversible, and could be applicable for magnetic and current sensing.
Yang
Minghong
M
National Engineering Laboratory for Optical Fiber Sensors, Wuhan University of Technology, Luoshi Street 122, Wuhan, China. minghong.yang@whut.edu.cn
Dai
Jixiang
J
Zhou
Ciming
C
Jiang
Desheng
D
D004419:Dysprosium / Q000737:chemistry; D004867:Equipment Design; D005336:Fiber Optic Technology; D007501:Iron / Q000737:chemistry; D008280:Magnetics; D008422:Materials Testing / Q000295:instrumentation; D055100:Optical Fibers; D055095:Optics and Photonics; D012031:Refractometry / Q000295:instrumentation; D013696:Temperature; D013725:Terbium / Q000737:chemistry; D013997:Time Factors
D013725:Terbium; D004419:Dysprosium; D007501:Iron