关键词：光纤布拉格光栅;粒子群优化(PSO);特征信息;横向均匀
摘 要：When the parameters were measured by using fiber Bragg grating (FBG) in practice,there were some parameters hard to measure,which would influenced the reflective spectral of FBG severely,and make the characteristic information harder to be extracted.Therefore,particle swarm optimization algorithm was proposed in analyzing the uniform force reflective spectral of FBG.Based on the uniform force sense theory of FBG and particle swarm optimization algorithm,the objective function were established,meanwhile the experiment and simulation were constructed.And the characteristic information in reflective spectrum of FBG was extracted.By using particle swarm optimization algorithm,experimental data showed that particle swarm optimization algorithm used in extracting the characteristic information not only was efficaciously and easily,but also had some advantages,such as high accuracy,stability and fast convergence rate.And it was useful in high precision measurement of FBG sensor.