[19a-P06-1~17] 3.13 Optical control devices and optical fibers

[19a-P06-11] Time- and Wavelength-division multiplexed Bus Topology FBG sensor

〇Takahiro Matsumoto¹, Kuroda Keiji¹ (1.Kitasato Univ.)

Keywords:

DFB(Distributed Feedback) laser,Fiber Bragg Grating(FBG),Heterodyne detection

We study time- and wavelength-division multiplexed FBG sensor systems based on heterodyne detection technique. The system contains functions such as wavelength calibration using an acetylene gas cell, automatic data acquisition using a Labview software, and automatic scanning of the laser wavelength. Recently, we applied this system to “Bus-topology” sensor network. We report on a TDM-WDM multiplexed Bus-topology FBG sensing system with a sufficient S/N ratio and high wavelength resolution.