In this topic, we demonstrate how to simulate fiber Bragg grating (FBGs) using MODE' eigenmode expansion (EME) solver. The FBG is constructed with an effective index of 1. 5, and a periodic variation of 1e-3 in the refractive index of the core of a step-index fiber. Fiber Bragg Gratings (FBGs) have emerged as one of the most versatile and reliable optical fiber sensors, particularly for temperature and strain monitoring in aerospace, civil, and biomedical applications. This review provides a comprehensive overview of FBG sensor technology. Fiber Bragg Grating (FBG) is an optical filtering device formed by introducing a periodic refractive index modulation in the fiber core, widely used in optical fiber communications, fiber sensing, laser frequency stabilization, and other fields. Features inclusion of temperature dependency and emulation within the program.
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