Fiber optic sensor system for detection of electric currents and other phenomena associated with geomagnetic disturbances

摘要

A fiber optic sensor system for measuring electric currents, such as the associated with geomagnetic disturbances and electromagnetic pulses. A fiber optic sensor system is disclosed including at least one light source, one or more first optical fibers having a first end arranged to receive light from the light source(s) and transmit the light to at least one of the sensor, and one or more second optical fibers arranged to receive reflected light from the fiber optic sensors and transmit the reflected light to a light sensing element. Using the sensors and the system, it is possible to measure currents within a structure of interest, such as upon the grounded neutral of an electric power transformer, take multiple measurements of current at the same piece of equipment or at multiple locations, or measure current and other physical phenomena on separate materials or structures.