A FBG temperature-sensor demodulation technique using a cascaded long-period fiber grating

摘要：

We report here a simple and low cost fiber Bragg grating (FBG) temperature sensing interrogation technique offering large dynamic range (-70-115℃) and high resolution (0.2℃). A key interrogating component of this technique is a cascaded long-period grating which acts as an edge filter converting temperature-induced wavelength variation into optical power measurement. The transmission profile of the cascaded long-period grating is shown to be nearly linear over a sufficiently wide range, yielding a linear relationship between the resultant intensity and environmental temperature.

关键词： fiber Bragg grating cascaded long-period fiber grating temperature sensing

作者: Hongbo Zou Peirong Ji

作者单位: College of Electric Engineering and Renewable Energy Three Gorges University Yichang, China

会议类型: 国际会议

会议名称: 2012 International Conference on Electric Technology and Civil Engineering(2012 电子技术与土木工程国际会议 ICETCE 2012)

会议地点: 三峡

会议语种:英文

页码: 1287-1290

在线出版日期: 2012-05-18（万方平台首次上网日期，不代表论文的发表时间）