Simulation of Axial Stress Effects on Reflection Spectra of Bragg Fiber Gratings

This research investigates the impact of axial stress on the reflection spectra of Bragg fiber gratings through simulation studies. To better understand these effects, we employ numerical modeling techniques that incorporate strain-optic coupling mechanisms. The simulation algorithm typically involves solving coupled-mode equations while accounting for stress-induced changes in grating period and refractive index modulation. Key implementation aspects include strain-dependent parameter updates using matrices for optical transmission calculations and Fourier transform-based spectral analysis. This study enhances our understanding of fiber grating characteristics and their optimization in practical applications. We also explore laboratory methods for simulating axial stress conditions, involving controlled tensile loading setups with precision displacement controls. The research contributes to improved fiber grating design and application, ultimately enhancing performance and reliability through stress-response optimized configurations.