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
Full Article | PDF ArticleMore Like This
Zhihui Luo, Hongqiao Wen, Huiyong Guo, and Minghong Yang
Opt. Express 21(19) 22799-22807 (2013)
Yi Jiang
Appl. Opt. 46(15) 2939-2948 (2007)
David J. F. Cooper, Trent Coroy, and Peter W. E. Smith
Appl. Opt. 40(16) 2643-2654 (2001)