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论证了聚合物光纤布拉格光栅(POFBG)在固体火箭发动机(SRM)纤维缠绕壳体大应变测量中应用的可行性.介绍了POFBG的制作和应用情况,阐述了POFBG传感方面的工作.建立了POFBG的应变模型、温度模型和湿度模型,分析了应变参量、温度参量、湿度参量对反射波长漂移量的影响,并提出了应变参量与湿度参量、温度参量分离的方案.通过MATLAB,对应变、温度和湿度变化进行了数值仿真.结果表明:反射波长随应变的增加而增大,随温度的升高而减小,随湿度的增加而增大,并受到温度和湿度的交叉影响,这与文献报道的实验结果比较吻合.文中的研究有益于进一步开展聚合物光纤光栅在SRM纤维增强复合材料应变测量中的研究.“,”The application feasibility of polymer optical fiber Bragg grating (POFBG) in large strain measurement of filament-wound case of solid rocket motor (SRM) was proven. The status of fabrication and applications of the POFBG at home and abroad were introduced. Some preliminary work on POFBG sensing was presented. The sensing model of POFBG was established, which depends on strain, temperature and humidity. The influence of strain, temperature and humidity on the reflected wavelength shift was analyzed. The scheme to separate the strain component from temperature and humidity was proposed. The variation of strain, temperature and humidity of POFBG was simulated by MATLAB. The results show that the reflected wavelengths increase with the strain increasing, decrease with the temperature increasing, increase with the humidity increasing and the wavelengths are affected by temperature and humidity simultaneously, which agree well with the experimental results reported in reference. This work is beneficial to the study of POFBG in strain measurement of fiber reinforced polymer(FRP) of SRM.