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FBGS Technologies GmbH - a leading supplier of advanced fiber-optic sensing solutions and components based on Fiber Bragg Gratings (FBG) technology - has secured a single-digit million growth financing.
Among the key features gained from FSG® inscription are the ability to reduce the Full Width Half Maximum (FWHM) of the reflection peak to about 200pm, independent of the length of the grating. However, for a fixed grating length, the reflectivity has a slight influence on the FWHM. The following graph shows the dependency between the FWHM of the FSG®s with increasing reflectivity for a fixed grating length of 4mm.
Simulated and measured data of the FWHM of a FSG® vs reflectivity for a 4mm grating length