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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 6 — Feb. 20, 2012
  • pp: 758–762

Current measurement by Faraday effect on GEPOPU

Noemí Correa, Hernán Chuaqui, Edmund Wyndham, Felipe Veloso, Julio Valenzuela, Mario Favre, and Heman Bhuyan  »View Author Affiliations

Applied Optics, Vol. 51, Issue 6, pp. 758-762 (2012)

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The design of an optical current sensor to be used in a pulsed power generator is presented. The current sensor is based on the polarization rotation by the Faraday effect. GEPOPU is a pulsed power generator, 110kA, 120ns double transit time, 1.5Ω coaxial geometry, and current rise time of 50ns. Two different optical geometries surrounding the conductor were tried, using Amici roof prism and pentaprism to go around the current once, as a way to preserve the state of polarization along the optical path by means of complementary reflections within the sensing element. We believe this to be the first time that such large and rapidly varying currents have been measured with this configuration. The values obtained for both geometries agree with the values obtained with a Rogowski coil. The traces obtained are completely noise-free and no significant time lag has been observed between the current determined from the Faraday rotation and the current measured using a Rogowski coil.

© 2012 Optical Society of America

OCIS Codes
(230.2240) Optical devices : Faraday effect
(230.5170) Optical devices : Photodiodes
(230.5480) Optical devices : Prisms
(260.5430) Physical optics : Polarization

ToC Category:

Original Manuscript: June 27, 2011
Manuscript Accepted: August 9, 2011
Published: February 17, 2012

Noemí Correa, Hernán Chuaqui, Edmund Wyndham, Felipe Veloso, Julio Valenzuela, Mario Favre, and Heman Bhuyan, "Current measurement by Faraday effect on GEPOPU," Appl. Opt. 51, 758-762 (2012)

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  1. S. Bush and D. Jackson, “Numerical investigation of the effects of birefringence and total internal reflection on a Faraday effect current sensors,” Appl. Opt. 31, 5366–5374 (1992). [CrossRef]
  2. Y. Ning and Z. Wang, “Recent progress in optical current sensing techniques,” Rev. Sci. Instrum. 66, 3097–3111 (1995). [CrossRef]
  3. W. Caton and J. Katzenstein, “An absolute electric current probe based on the Faraday effect,” J. Res. Natl. Bur. Stand. 89, 265–272 (1984).
  4. T. Yoshino, M. Gojyuki, Y. Takahashi, and T. Shimoyama, “Single glass block Faraday effect current sensor with homogeneous isotropic closed optical circuit,” Appl. Opt. 36, 5566–5573 (1997). [CrossRef]
  5. B. Yi, B. C. B. Chu, and K. S. Chiang, “New design of optical electric-current sensor for sensitivity improvement,” IEEE Trans. Instrum. Meas. 49, 418–423 (2000). [CrossRef]
  6. J. L. Arce-Diego, R. López-Ruisánchez, J. M. López-Higuera, and M. A. Muriel, “Model of an openable Faraday-effect hybrid-current optical transducer based on a square-shaped structure with internal mirror,” Appl. Opt. 36, 6242–6245 (1997). [CrossRef]
  7. S. P. Bush and D. A. Jackson, “Dual-channel Faraday-effect current sensor capable of simultaneous measurement of two independent currents,” Opt. Lett. 16, 955–957 (1991). [CrossRef]
  8. Y. N. Ning, Z. P. Wang, A. W. Palmer, and K. T. V. Grattan, “A Faraday current sensor using a novel multi-optical-loop sensing element,” Meas. Sci. Technol. 6, 1339–1342 (1995). [CrossRef]
  9. W. Syed, I. Blesener, D. A. Hammer, and M. Lipson, “Magnetic field measurements in wire-array Z-pinches using magneto-optically active waveguides,” AIP Conf. Proc. 1088, 73–76 (2009). [CrossRef]
  10. E. Munin and J. A. Roversi, “Faraday effect and energy gap in optical materials,” J. Phys. D 25, 1635–1639 (1992). [CrossRef]
  11. A. Jain and J. Kumar, “A simple experiment for determining Verdet constants using alternating current magnetic fields,” Am. J. Phys. 67, 714–717 (1999). [CrossRef]
  12. E. Hwang and B. Kim, “Pulsed high magnetic field sensor using polymethyl methacrylate,” Meas. Sci. Technol 17, 2015–2021 (2006). [CrossRef]

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