Sato, T. & Sone, I. Optical Review (1997) 4: A35. doi:10.1007/BF02935986
Bulk-optic current sensors have been developed for electric power systems. This current sensor has a glass ring type Faraday cell, where a light beam circulates around a current-carrying-conductor to precisely measure the current. Fundamental performances and practical applications are described.
optical sensor Faraday effect electrical current measurement electrical power system