[21p-P21-1~4] 3.13 Optical control devices and optical fibers (formerly 3.14)

[21p-P21-3] FBG sensing based on time-and wavelength-division multiplexed dual-wavelength differential detection II

〇Ui Inaba¹, Oka Hisaki¹, Kuroda Keiji¹ (1.Kitasato Univ.)

Keywords:

Optical Fiber Sensor,Fiber Bragg Grating,DFB laser

Fiber Bragg gratings (FBGs) are devices that have diffraction gratings in the fiber core, and their periodicity changes when environmental condition, for example temperature or strain, changes. By observing a center-wavelength shift of the reflection spectrum, we can use FBGs as fiber sensor heads. We report on an automated system using LabView software for time- and wavelength-division-multiplexed dual-wavelength differential detection FBG sensing using a single DFB laser.