Title :
A fiber-optic magnetic gradiometer
Author :
Koo, K.P. ; Sigel, G.H., Jr.
Author_Institution :
Naval Research Laboratory, Washington, DC, USA
fDate :
9/1/1983 12:00:00 AM
Abstract :
A fiber-optic magnetic gradiometer capable of measuring both ac and dc magnetic-field gradients has been designed and demonstrated. An approach using real-time magnetic balancing and trimming has been deployed. A device sensitivity of 0.1 gamma (10-6Oe) per centimeter of sensor head separation for 1 m of magnetically active fiber is achievable.
Keywords :
Magnetic measurements; Optical fiber transducers; Amorphous magnetic materials; Arm; Magnetic field measurement; Magnetic sensors; Magnetic separation; Magnetostriction; Optical fiber couplers; Optical fiber devices; Optical fiber sensors; Optical interferometry;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.1983.1072145
