Novel Perturbation-Immune All-Fiber Optical Architecture for Current Sensing

This paper describes a novel all-fiber optical architecture for electric current or magnetic field sensing which is immune against temperature and vibration perturbations in a hazardous environment. The architecture is structured by employing the fiber-optic wave plates (quarter, half or full) of the patented invention of the senior author. Experimental results on prototype fiber-optic specimen and on a variety of optical fiber networks confirm the respective theoretical predictions.