OPTICAL FIBER FOR A SENSOR AND A POWER DEVICE MONITORING SYSTEM
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United States of America Patent
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Mar 12, 2015
app pub date -
Jan 21, 2013
filing date -
Jan 23, 2012
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Abstract
An optical fiber for a sensor that can measure a current or a voltage precisely is provided. The optical fiber for the sensor 10 comprises: an FBG 12 wherein a refractive index of a core changes periodically; a metal layer 13 for sheathing the FBG 12; and a pair of electrodes 14 and 15 provided at the metal layer 13. The electrodes 14 and 15 are connected to an object to be measured in desired positions. Current flowing through the metal layer 13 is calculated based on variation in Bragg wavelength of the FBG 12.
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