Spatial resolution of DOFS and its calibration methods
As a key parameter of distributed optical fiber sensing (DOFS), spatial resolution has a significant influence on the quality of measurement, which is verified by the constant tensile test and strain distribution comparison at different spatial resolution.Two common calibration methods for distributed optical fiber temperature measurement, including 10%-90% Step-Function and Hot-Spot method, as well as their applicability were discussed.A new calibration method, Dissimilar-Fiber-Splicing method, which means two free fibers with variant initial peak frequency were alternately spliced in series with different length, was recommended.And the experimental results by using Dissimilar-Fiber-Splicing method was shown.
Spatial resolution Calibration Dissimilar-Fiber-Splicing method 10 -90 Step-Function method Hot-Spot method
Dan Zhang Heliang Cui Bin Shi
School of Earth sciences and Engineering,Nanjing University,Nanjing 210093,China School of Earth sciences and Engineering,Nanjing University,Nanjing 210093,China;Large Dam Safety Su
国际会议
南京
英文
467-472
2014-10-12（万方平台首次上网日期，不代表论文的发表时间）