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26 January 2009 A nanophotonic sensor for large electric current measurements
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A non-contact and low-cost nanomaterial based fiber-optic sensor is developed for measuring large values of electric currents. The magnetic field, generated by the electric current, changes the refractive index of a liquid in which nanomaterial particles are suspended. The change of refractive index is converted to a change in the intensity of light transmitted in an evanescent field based fiber optic sensor. The change in the intensity is proportional to the magnitude of the electric current and thus the current can be measured by measuring the resultant change in the intensity of light.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. K. Ghosh, D. P. Arora, P. Verma, R. C. Huck, and J. Fagan "A nanophotonic sensor for large electric current measurements", Proc. SPIE 7222, Quantum Sensing and Nanophotonic Devices VI, 72221C (26 January 2009);

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