It is presented two detections schemes to be used in Faraday Effect current sensors. They enlarge the dynamic range of current measurement preserving a good accuracy with relatively simple optics. These technics overcome the ambiguity problems normally present in this class of sensors. One is able to measure the ampli.tude of AC currents while the other follows it, giving a real time digital output.
L. C.G Valente,
L. R. Kawase,
"Computer Simulation Of A New Fiber Optic Current Sensor", Proc. SPIE 0985, Fiber Optic and Laser Sensors VI, (1 February 1989); doi: 10.1117/12.948839; https://doi.org/10.1117/12.948839