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Measurement of electric power using an optical fiber grating

✍ Scribed by Chin-Hsing Cheng; Li-Min Lin; Wen-Fung Liu

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
328 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

There is increasing motivation to develop sensors and actuators to manage domestic electric power consumption. This article demonstrates an optical fiber sensor using a superstructure fiber grating (SFG) to measure electric power consumption. The sensor head is based on SFG encapsulated in a polymer‐half‐field metal cylinder embedded a magnetic material at measure point. The operating mechanism is that the sensor can be attracted by the induced magnetic force created by the electric power in the solenoid along one radial direction only, and responds to an axial force on the magnetic rod attached to the round plate, creating an axial attraction on the SFG. Therefore, variations in attractive force cause center‐wavelength variations in SFB and long‐period grating acts as an edge filter converting strain‐induced wavelength variation into optical power measurement. Thus, the sensor can be used to measure electric power without the use of power meter. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2438–2441, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24660

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