Title :
Gaussian-Strain-Chirped Fiber Bragg Grating Couple for Temperature-Insensitive and Intensity-Referenced Force Measurement
Author :
Guo, Tuan ; Zhang, Hao ; Liu, Bo ; Li, Guoyu ; Zhao, Qida ; Dong, Xiaoyi
Author_Institution :
Nankai Univ., Tianjin
Abstract :
A technique for temperature-insensitive force measurement via strain-induced Gaussian-strain-chirped fiber Bragg grating (FBG) couple and differential optical power detection is proposed and experimentally demonstrated. For a temperature range from -10degC to 80degC , a linear force measurement with thermal fluctuations less than 2.5% full-scale is achieved by simply using cost-effective p-i-n photodiodes without any temperature compensation.
Keywords :
Bragg gratings; Gaussian processes; fluctuations; force measurement; optical fibres; p-i-n photodiodes; Gaussian-strain-chirped fiber Bragg grating couple; differential optical power detection; force measurement; p-i-n photodiodes; thermal fluctuations; Bragg gratings; Fiber gratings; Fluctuations; Force measurement; Gaussian processes; Optical coupling; Optical detectors; PIN photodiodes; Temperature distribution; Thermal force; Chirp modulation; differential optical power detection; fiber Bragg grating (FBG); force measurement;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2007.904879
