Reverse Drift and Restraining of Centre-wavelength Reflected by Tensing fiber Bragg Grating
光纤布喇格光栅中心波长反向漂移的实验研究

Because of the different elastic modulus between the core and the cladding of the fiber Bragg grating(FBG),a reverse drift of the center-wavelength reflected by a tensing FBG under high load will appear,which would seriously affect the measurement precision and range of a stress sensor based on FBG.The experiment results show that,by peeling off a small section of the cladding at the fixing end of the FBG and fixing both the bared section and part of the contiguous fiber with coating together,the reverse dr...