A chirped FBG is a special type of FBG in which the period of the grating varies linearly along its length. The result is a wavelength selective filter where a broad range of wavelengths are reflected from different locations along the CFBG.
In this way, the CFBG can be designed to modify the characteristics of a spectrum, such as narrowing or broadening. Click the link below to see the multiple applications of this remarkable optical element.
