Combined time- and wavelength-division-multiplexing demodulation technique of fiber grating sensor arrays using a tunable pulsed laser
Applied Optics, Vol. 46, Issue 7, pp. 1015-1018 (2007)
http://dx.doi.org/10.1364/AO.46.001015
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Abstract
Combined time- and wavelength-division-multiplexing demodulation technique of fiber Bragg grating (FBG) sensor arrays using a tunable pulsed laser is proposed and demonstrated. A tunable fiber laser based on a matched FBG is applied. The wavelengths of the sensing FBGs are obtained by detecting the maximum voltages with a photodiode that avoids the complex demodulationprocess. The advantages of this scheme are simple structure, high signal-to-noise ratio, and the sensing signals obtained by detecting the maximum voltages.
© 2007 Optical Society of America
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4080) Fiber optics and optical communications : Modulation
(060.4230) Fiber optics and optical communications : Multiplexing
(230.5170) Optical devices : Photodiodes
History
Original Manuscript: April 27, 2006
Revised Manuscript: October 13, 2006
Manuscript Accepted: October 19, 2006
Published: February 12, 2007
Citation
Bo Dong, Shiya He, Yang Hushu, Wei Tianda, Feng Lvjun, Tuan Guo, and Qida Zhao, "Combined time- and wavelength-division-multiplexing demodulation technique of fiber grating sensor arrays using a tunable pulsed laser," Appl. Opt. 46, 1015-1018 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-7-1015
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