Title :
Current sensing with metal-coated multimode optical fibres
Author :
Tangonan, Gregory L. ; Persechini, D.I. ; Morrison, R.J. ; Wysocki, J.A.
Author_Institution :
Hughes Research Laboratories, Optical Circuits Department, Malibu, USA
Abstract :
A multimode fibre has been used to detect electrical currents. The optical fibre which serves as the sensor is coated with a thick Al metal jacket. Electromotive forces on a wire in a magnetic field are used to induce differential phase shifts between the fibre modes. Good linearity has been observed in the 5 to 2000 mA current range.
Keywords :
electric current measurement; electric sensing devices; fibre optics; optical fibres; 5 to 2000 mA; Al metal jacket; differential phase shifts; electric current detection; electromotive forces; linearity; multimode optical fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800684
