Fiber Bragg Grating (FBG)

Fiber Bragg Grating (FBG) is a technology used in optical fibers to reflect specific wavelengths of light. It consists of a periodic pattern of changes in the refractive index along the fiber, which creates a mirror-like effect at particular frequencies. This property allows FBGs to sense changes in temperature, pressure, or strain by detecting shifts in the reflected light's wavelength. FBGs are widely used in telecommunications, structural monitoring, and various sensors, providing reliable measurements and improving the performance of fiber optic systems.