Dual-Wavelength DC Compensation Technique for the Demodulation of EFPI Fiber Sensors

Jingshan Jia; Yi Jiang; Liuchao Zhang; Hongchun Gao; Sumei Wang; Lan Jiang

doi:10.1109/LPT.2018.2848934

Dual-Wavelength DC Compensation Technique for the Demodulation of EFPI Fiber Sensors

Jingshan Jia, Yi Jiang^*, Liuchao Zhang, Hongchun Gao, Sumei Wang, Lan Jiang

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

A dual-wavelength DC compensation technique for the demodulation of extrinsic Fabry-Perot interferometric (EFPI) fiber sensors is developed. The technique can overcome two problems in the measurement: the cavity length of the EFPI and wavelengths of light sources must be matched, and the DC component of the interferometric fringe must be eliminated. The proposed demodulation technique is verified by demodulating EFPI sensors with different cavity lengths and different phase modulations. Experimental results show that the demodulation technique can interrogate an EFPI sensor with any cavity length and any phase modulation. Besides, the technique has properties of high frequency, large dynamic range, and high sensitivity.

Original language	English
Pages (from-to)	1380-1383
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	30
Issue number	15
DOIs	https://doi.org/10.1109/LPT.2018.2848934
Publication status	Published - 1 Aug 2018

Keywords

Fabry-Perot interferometers
Fiber optical sensors
interferometry
phase measurement

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abstract = "A dual-wavelength DC compensation technique for the demodulation of extrinsic Fabry-Perot interferometric (EFPI) fiber sensors is developed. The technique can overcome two problems in the measurement: the cavity length of the EFPI and wavelengths of light sources must be matched, and the DC component of the interferometric fringe must be eliminated. The proposed demodulation technique is verified by demodulating EFPI sensors with different cavity lengths and different phase modulations. Experimental results show that the demodulation technique can interrogate an EFPI sensor with any cavity length and any phase modulation. Besides, the technique has properties of high frequency, large dynamic range, and high sensitivity.",

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author = "Jingshan Jia and Yi Jiang and Liuchao Zhang and Hongchun Gao and Sumei Wang and Lan Jiang",

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T1 - Dual-Wavelength DC Compensation Technique for the Demodulation of EFPI Fiber Sensors

AU - Jia, Jingshan

AU - Jiang, Yi

AU - Zhang, Liuchao

AU - Gao, Hongchun

AU - Wang, Sumei

AU - Jiang, Lan

PY - 2018/8/1

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AB - A dual-wavelength DC compensation technique for the demodulation of extrinsic Fabry-Perot interferometric (EFPI) fiber sensors is developed. The technique can overcome two problems in the measurement: the cavity length of the EFPI and wavelengths of light sources must be matched, and the DC component of the interferometric fringe must be eliminated. The proposed demodulation technique is verified by demodulating EFPI sensors with different cavity lengths and different phase modulations. Experimental results show that the demodulation technique can interrogate an EFPI sensor with any cavity length and any phase modulation. Besides, the technique has properties of high frequency, large dynamic range, and high sensitivity.

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Dual-Wavelength DC Compensation Technique for the Demodulation of EFPI Fiber Sensors

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Keywords

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