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The phase dependent properties of a second-order FBG are presented. At the second Bragg condition, the radiated power of the second-order FBG varies by a factor of 2.4 as the phase changes by % radians.
This paper demonstrates an optical fiber sensor using a fiber Bragg grating (FBG) to measure real and reactive powers. The sensor head is based on FBG encapsulated in a metal cylinder embedded a magnetic material at measure point. The operating mechanism is the sensor can be attracted by the induced magnetic force created by the apparent power in the… (More)