Improved Sensitivity of Fiber Fabry-Perot Interferometer Based on Phase-Tracking Algorithm

Improved Sensitivity of Fiber Fabry-Perot Interferometer Based on Phase-Tracking Algorithm

A novel signal-processing algorithm based on phase tracking in frequency domain of optical fiber Fabry-Perot interferometric spectrum is described. The concept was demonstrated with three fiber Fabry-Perot interferometers for relative humidity measurement. Experimental results show that the proposed...

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Veröffentlicht in:IEEE sensors journal 2015-10, Vol.15 (10), p.5834-5838
Hauptverfasser: Qi, Chongjie, Yang, Minghong, Lee, Dongwen, Xie, Weijing, Dai, Jixiang
Format: Artikel
Sprache:eng
Schlagworte:
Cavity resonators
Fabry-perot interferometer
Frequency-domain analysis
Humidity
Optical fiber sensors
Optical fibers
Optical interferometry
phase tracking
relative humidity measurement
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Zusammenfassung:A novel signal-processing algorithm based on phase tracking in frequency domain of optical fiber Fabry-Perot interferometric spectrum is described. The concept was demonstrated with three fiber Fabry-Perot interferometers for relative humidity measurement. Experimental results show that the proposed method can yield optical path difference measurement with high resolution, especially in the lower range of absolute humidity under 2000 ppm.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2015.2453435