Title :
Fiber-optic DC magnetic field sensor with balanced detection technique
Author :
Kim, D.Y. ; Kong, H.J. ; Kim, B.Y.
Author_Institution :
Dept. of Phys., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
The authors describe a balanced detection technique that suppresses undesirable effects due to residual signals for the detection of DC and low-frequency magnetic fields with intermetric fiber-optic sensors using metallic glass. The detection technique utilizes a square-wave magnetic field modulation that translates the residual signal outside of the detection bandwidth. Experimental results are presented that show effective suppression of the residual signal.<>
Keywords :
fibre optic sensors; magnetic field measurement; magnetometers; DC magnetic field sensor; balanced detection technique; detection bandwidth; intermetric fiber-optic sensors; low-frequency magnetic fields; magnetometers; metallic glass; residual signals; signal suppression; square-wave magnetic field modulation; Amorphous magnetic materials; Frequency; Glass; Magnetic field induced strain; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic sensors; Magnetostriction; Optical fiber sensors;
Journal_Title :
Photonics Technology Letters, IEEE
