title: Combined time- and wavelength-division-multiplexing demodulation technique of fiber grating sensor arrays using a tunable pulsed laser.
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 demodulation process. The advantages of this scheme are simple structure, high signal-to-noise ratio, and the sensing signals obtained by detecting the maximum voltages.
authors.affiliation: Institute of Modern Optics, Nankai University, Tianjin, China. db1978@163.com
authors.forename: Bo
authors.initials: B
authors.lastname: Dong
authors.forename: Shiya
authors.initials: S
authors.lastname: He
authors.forename: Yang
authors.initials: Y
authors.lastname: Hushu
authors.forename: Wei
authors.initials: W
authors.lastname: Tianda
authors.forename: Feng
authors.initials: F
authors.lastname: Lvjun
authors.forename: Tuan
authors.initials: T
authors.lastname: Guo
authors.forename: Qida
authors.initials: Q
authors.lastname: Zhao