Application of Distributed Fiber Bragg Grating in Pipeline Detection
分布式光纤光栅在管道检测中的应用

A distributed fiber Bragg grating sensor is designed. The method for packaging the sensing head and the method for paving the sensing array in project are given. The detection sensitivity of the packaged sensing head to the leakage position is improved.A correspongding experiment is done.The experimental result shows that the center wavelength of the fiber grating has a change of Onm without oil leakage and has a change of 1nm with oil leakage.The experimental result is consistent with the theory analysis.