Verfahren und Vorrichtung zum Herstellen eines Gitters mit Chirp

DE 102007035911 A1 UPAB: 20090222 NOVELTY - A method for producing a grating pattern with chirp, especially an optic grating applied onto a fiber optic, has the laser beam (2) passed through a cylindrical lens (1) and directed onto a grating (3) on a support structure. The grating is deformed longitudinally at controlled rate to produce the chirp. Suitable deforming drives include thermal expansion, piezoelectric drive, mechanical drive etc. USE - Production of diffracting gratings with chirp ADVANTAGE - Cost effective production method to generate gratings with selected chir