A novel fiber Bragg grating sensors multiplexing technique

We bring forward a novel FBG sensor multiplexing technique based on the combination of wavelength- and spatial-division multiplexing technique. Furthermore, the data acquisition parameter of the multiplexing sensing FBG system is defined. With this technique, the FBG sensors system not only avoid frequently switching and improve the average response speed, but also are able to enact data acquisition rule according to the data acquisition factor that is composed with priority (PRI), the delay time and the wavelength shift of FBG sensors. Therefore, the smart FBG sensors multiplexing system is more rational and smarter than the conventional counterpart. The simulate result and the experiment work demonstrated that the average delay time of smart system is less than conventional ones and immune to the scale size.