According to the experimental results, the bare FBGs and MCFBG sensors in cross-ply and quasi-isotropic-ply laminates have atendency toward gradually increasing intensity after approximately 70℃. This suggests that 70℃ may be estimated as the temperature for gelation. The MCFBG sensors with a metal coating have a smaller wavelength shift than the bare sensors as the temperature increases. TheZrN-coated and CrN-coated FBG sensors had, compared with bare FBG sensor, 2.742% and 3.624% lowercuring residual axial strains, respectively, in the cross-ply laminates and 7.553% and 8.025% lower curing residual axial strains,respectively, in the quasi-isotropic-ply laminates. Therefore, the reductions in axial residual strain are more pronounced in the quasiisotropic-ply laminate location than in the cross-ply laminate location.