Real Time Monitoring of Structural Health Using Fiber Bragg Grating Sensors Based on Arrayed Waveguide Grating Demultiplexing
In order to monitoring the health of the structure, a quasi-distributed fiber Bragg grating (FBG) interrogator based on two-channel theory of the arrayed waveguide grating (AWG) demultiplexer is presented.As is known, a slightly change of the temperature or strain or other related parameters applied on the FBG will lead to a shift of the Bragg wavelength of the FBG,which makes sense on the precisely temperature and strain monitoring of structures, including viaduct bridges, towers, railway, skyscraper, etc.It can be interrogated by the relative intensity of two-adjacent-channel of the AWG-based demultiplexer, which offers a low-cost, high sensitivity for the interrogation of FBG distributed sensors.
Fiber Bragg Grating Structural Health Monitoring Arrayed Waveguide Grating
Luanxiong Chen Wei Xu Xuguang Huang
Laboratory of Nanophotonic Functional Materials and Devices,School for Information and Optoelectronic Science and Engineering,South China Normal University,Guangzhou,510006,China
国际会议
上海
英文
2062-2065
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）