30 November 1994 Faraday effect sensors for magnetic field and electric current
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Proceedings Volume 2341, Interferometry '94: Interferometric Fiber Sensing; (1994) https://doi.org/10.1117/12.195528
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland
Recent research at NIST has greatly extended the capabilities of Faraday effect sensors for both magnetic field and electric current measurements. Current sensors using single-mode optical fiber show temperature stability near material limits, and are approaching commercial availability for applications in the power industry. The Faraday effect in iron garnets shows great promise for measureing current at low levels and/or high speeds. Sensors with noise equivalent currents of about 200 nA/(root)Hz have been demonstrated. Magnetic field sensors using iron garnets and flux concentration, have led to sensors with noise equivalent magnetic fields in the range of 1 pT/(root)Hz.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gordon W. Day, Gordon W. Day, Merritt N. Deeter, Merritt N. Deeter, Allen H. Rose, Allen H. Rose, Kent B. Rochford, Kent B. Rochford, "Faraday effect sensors for magnetic field and electric current", Proc. SPIE 2341, Interferometry '94: Interferometric Fiber Sensing, (30 November 1994); doi: 10.1117/12.195528; https://doi.org/10.1117/12.195528


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