Optical Review

, 4:A35

Development of bulk-optic current sensor using glass ring type faraday cells

  • Tadashi Sato
  • Isamu Sone

DOI: 10.1007/BF02935986

Cite this article as:
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.

Key words

optical sensor Faraday effect electrical current measurement electrical power system 

Copyright information

© The Optical Society of Japan 1997

Authors and Affiliations

  • Tadashi Sato
    • 1
  • Isamu Sone
    • 1
  1. 1.Power & Industrial Systems R&D DivisionHitachi Ltd.Hitachi, IbarakiJapan

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