Demultiplexing of Interferometrically Interrogated Fiber Bragg Grating Sensors Using Hilbert Transform Processing
Journal of Lightwave Technology, Vol. 17, Issue 5, pp. 831- (1999)
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Abstract
The peak reflectance wavelengths of gratings with reflectance maxima separated by less than 2 nm can be accurately determined through a demultiplexing method based on Hilbert transforms of interferograms. We demonstrate a wavelength demultiplexing of three fiber Bragg gratings (FBG's) with less than 4 pm crosstalk and repeatability and less than 19 pm uncertainty. We anticipate that a large number of gratings can be demultiplexed with a single broadband source and a single receiving interferometer, provided that the interferogram is sampled at accurate intervals slightly above the Nyquist rate.
[IEEE ]
Citation
Kent B. Rochford and Shellee D. Dyer, "Demultiplexing of Interferometrically Interrogated Fiber Bragg Grating Sensors Using Hilbert Transform Processing," J. Lightwave Technol. 17, 831- (1999)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-17-5-831
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