FBGS is a Germany / Belgium based developer and manufacturer of high strength Fiber Bragg Gratings (FBGs), Interrogators, Sensors and custom-made fiber optic sensing solutions. All of our FBG components (DTG ®, FSG ®, AGF ®) stand out with unmatched mechanical and optical properties. This periodic structure acts as a wavelength-specific mirror: it reflects light that satisfies the Bragg condition ${lambda. A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. Typically, the perturbation is approximately periodic over a certain length of e.