Analysis of independent strain-temperature fiber Bragg grating sensing technique using OptiSystem and OptiGrating

In this paper, a combination of two simulation tools provided by Optiwave Systems Inc. is used to perform a remote fiber Bragg grating (FBG) based strain-temperature sensor setup. Two Gaussian apodized FBG sensors were designed and characterized by OptiGrating. The customized FBGs were incorporated into OptiSystem tool to perform the analysis. Full ability to utilize the combination to perform remote strain-independent temperature FBG setup was demonstrated. 1.2 pm/μstrain and 14.4 pm/°C sensitivities obtained for strain and temperature respectively.