What is a FBG?

FBG is an abbreviation for (Fiber Bragg Grating), which is a refractive grating (diffraction grating) installed in the core of an optical fiber and constructed with short segments. In FBG, among the light of various wavelengths traveling inside the optical fiber, only the light having the wavelength corresponding to the period (refractive index) of the FBG fringes is reflected.

Application of FBG

FBG is one of the effective alternatives even in the measurement environment where the conventional sensor technology cannot be applied, and it is very effective even in the harsh measurement environment such as high temperature, high temperature, high radiation and high vacuum. FBG can be used, for example, for vibration and temperature control in high voltage generators, monitoring of high temperature points in transformers, blade monitoring in wind turbines, load monitoring in aircraft fuel tanks, strain, temperature, and displacement in reactors. Accurate measurement is possible even in harsh environment applications such as surveillance and spacecraft surveillance.

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