Title :
Fiber-optic magnetic sensor utilizing the Lorentzian force
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
fDate :
10/1/1990 12:00:00 AM
Abstract :
A fiber-optic magnetic sensor whose design is based on the Lorentzian force is presented. Optical phase sensitivities of 0.67 and 0.11 rad/(A/m) for AC and DC magnetic fields are obtained with a linearity of three decades using 100 mm of Al-coated sensor fiber. A configuration for multipoint AC field measurement with frequency-independent sensitivity is proposed. Electric current is measurable with a 2.6-rad/μA sensitivity
Keywords :
aluminium; coatings; electric current measurement; fibre optic sensors; magnetic field measurement; 100 nm; AC magnetic fields; Al; Al-coated sensor fiber; DC magnetic fields; Lorentzian force; electric current measurement; fiber-optic magnetic sensor; frequency-independent sensitivity; multipoint AC field measurement; Amorphous magnetic materials; Current; Force measurement; Force sensors; Magnetic field measurement; Magnetic materials; Magnetic sensors; Magnetostriction; Optical fiber sensors; Optical sensors;
Journal_Title :
Lightwave Technology, Journal of
