Title :
Fiber-optic polarimetric DC magnetometer utilizing a composite metallic glass resonator
Author :
Mermelstein, Marc D.
Author_Institution :
Geo-Centers, Inc., Newton Center, MA, USA
fDate :
9/1/1986 12:00:00 AM
Abstract :
A fiber-optic polarimetric dc magnetometer has been constructed from 50 m of high birefringence optical fiber. Magnetic fields are detected by the magnetostrictive response of a composite thin-shell resonator consisting of an acrylic tube, unannealed metallic glass ribbon, and a 20-m coil of high birefringence fiber. Quadrature is maintained with the phase tracking technique and optical common-mode rejection is utilized for noise reduction. The rms magnetometer noise corresponds to a minimum detectable magnetic field of 2.6 γ in the dc to 1-Hz bandwidth.
Keywords :
Magnetometers; Magnetostrictive materials/devices; Optical fiber transducers; Optical polarization; Amorphous magnetic materials; Birefringence; Coils; Glass; Magnetic fields; Magnetometers; Magnetostriction; Optical fibers; Optical noise; Optical resonators;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.1986.1074895
