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Proceedings Paper

Fiber optic current sensor using an internal trigger sampling technique
Author(s): Hyoung-Jun Park; Chan Il Yeo; Dong Hoon Son; Keo-Sik Kim; Hyun Seo Kang; Sung Chang Kim; Minho Song
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Paper Abstract

We present an advanced demodulation technique for a fiber-optics interferometric current transducer. A quadrature sampling method with internal triggers was adopted for structural simplification and cost-effective phase demodulation. The internal triggers for quadrature signal processing were generated at zero crossing points of an ac-coupled reference signal, which was distinguished from the current-induced interference signal by utilizing fiber Bragg grating. Phase variation was extracted from the arctangent demodulation process. The proposed technique demonstrated accurate and stable phase demodulations performance and better than that of the conventional lock-in amp demodulation.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032327 (23 April 2017); doi: 10.1117/12.2263243
Show Author Affiliations
Hyoung-Jun Park, Electronics and Telecommunications Research Institute (Korea, Republic of)
Chan Il Yeo, Electronics and Telecommunications Research Institute (Korea, Republic of)
Dong Hoon Son, Electronics and Telecommunications Research Institute (Korea, Republic of)
Keo-Sik Kim, Electronics and Telecommunications Research Institute (Korea, Republic of)
Hyun Seo Kang, Electronics and Telecommunications Research Institute (Korea, Republic of)
Sung Chang Kim, Electronics and Telecommunications Research Institute (Korea, Republic of)
Minho Song, Chonbuk National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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