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Proceedings Paper

Dense wavelength-division demultiplexing of interferometrically interrogated fiber Bragg grating sensors
Author(s): K. B. Rochford
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Paper Abstract

We report accurate demultiplexing of fiber Bragg grating sensors with reflection wavelengths separated by less than 2 nm using a method based on Hilbert transforms of interferograms. Demultiplexing ofthree gratings with less than 4 pm crosstalk and repeatability, and 19 pm uncertainty was demonstrated. We anticipate that a large number of gratings can be multiplexed with a single broadband source and a single receiving interferometer, provided that the interferogram is sampled with accurate intervals close to the Nyquist rate.

Paper Details

Date Published: 1 September 1999
PDF: 4 pages
Proc. SPIE 3746, 13th International Conference on Optical Fiber Sensors, 37463O (1 September 1999); doi: 10.1117/12.2302122
Show Author Affiliations
K. B. Rochford, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 3746:
13th International Conference on Optical Fiber Sensors
Byoung Yoon Kim; Kazuo Hotate, Editor(s)

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