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Proceedings Paper

Use of dual-frequency excitation method to improve the accuracy of an optical current sensor
Author(s): Shuping Wang; Avinash Karri; Yossi Harlev
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Paper Abstract

We report a simple yet effective method to improve the accuracy of an optical current sensor (OCS) by compensating the temperature dependency of the Verdet constant with a low-power source operating at a known frequency combined with a lookup table. Neither a complex digital signal processing system nor extra rare earth bulk glass material is used to achieve the accuracy of the current's measurement. Modeling and simulations are carried out. An OCS has been designed and fabricated. The dynamic range of 1620 RMS ampere with a sensitivity of 0.36 ampere is achieved with a single-path SF57 bulk glass.

Paper Details

Date Published: 21 August 2009
PDF: 6 pages
Proc. SPIE 7420, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III, 74200I (21 August 2009); doi: 10.1117/12.826817
Show Author Affiliations
Shuping Wang, Univ. of North Texas (United States)
Avinash Karri, Univ. of North Texas (United States)
Yossi Harlev, Optisense Network, Inc. (United States)


Published in SPIE Proceedings Vol. 7420:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III
Shizhuo Yin; Ruyan Guo, Editor(s)

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