Title :
Fiber optic EFPI-based sensor for low magnetic field measurement
Author :
Oh, Ki Dong ; Ranade, Jaydeep ; Arya, Vivek ; Wang, Anbo ; Claus, Richard O.
Author_Institution :
Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
There has been considerable interest in developing high sensitivity fiber optic magnetic field sensors using primarily interferometric configurations In this paper, a fiber optic sensor based on the extrinsic Fabry-Perot interferometer (EFPI) is demonstrated to measure low DC-magnetic fields (100 Oe - 40,000 Oe). A Metglas (Fe/sub 77.5/B/sub 15/Si/sub 7.5/) wire-based magnetostrictive transducer is used as the reflector in the EFPI sensor. The simple sensor geometry gives both low vibration sensitivity and high temperature stabilization.
Keywords :
Fabry-Perot interferometers; birefringence; fibre optic sensors; magnetic field measurement; magneto-optical sensors; magnetostrictive devices; sensitivity; stability; EFPI sensor reflector; Fe/sub 77.5/B/sub 15/Si/sub 7.5/; Metglas; extrinsic Fabry-Perot interferometer; fiber optic EFPI-based sensor; fiber optic sensor; high sensitivity fiber optic magnetic field sensors; high temperature stabilization; interferometric configurations; low DC-magnetic fields; low magnetic field measurement; low vibration sensitivity; simple sensor geometry; wire-based magnetostrictive transducer; Amorphous magnetic materials; Fabry-Perot interferometers; Iron; Magnetic field measurement; Magnetic sensors; Optical fiber sensors; Optical fibers; Optical interferometry; Optical sensors; Temperature sensors;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1996. LEOS 96., IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3160-5
DOI :
10.1109/LEOS.1996.565215
