Manufacturing a fiber bragg grating and a mask used in the...

G - Physics – 02 – B

Patent

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G02B 6/00 (2006.01) G02B 6/02 (2006.01)

Patent

CA 2422460

The invention reduces the effects of stitching errors from re-scaling or re- positioning in the fabrication of fiber Bragg gratings or the mask used in such fabrication. A first embodiment of the invention preferably uses characteristics of stitching errors to compensate for the stitching errors themselves. By increasing the number of stitching errors, errors caused by the stitching errors can be reduced. A second embodiment uses continuous writing of the desired pattern, wherein the desired pattern is snapped to a grid that can be written by the fabrication equipment. Using continuous writing eliminates stitching errors in the resulting gratings.

Cette invention permet d'atténuer les conséquences d'erreurs d'assemblage dues au re-dimensionnement ou au re-positionnement dans la fabrication de réseaux Bragg en fibres ou du masque utilisé pour ce processus de fabrication. Selon un premier mode de réalisation, on exploite de préférence les caractéristiques d'erreurs d'assemblage pour compenser lesdites erreurs. En augmentant le nombre d'erreurs d'assemblage, on peut réduire les erreurs dues à ces erreurs d'assemblage. Selon un second mode de réalisation, on fait intervenir une écriture en continu de motif recherché, ce motif étant déplacé vers une grille qui peut être écrite dans le matériel de fabrication. L'écriture en continu permet d'éliminer les erreurs d'assemblage dans les réseaux ainsi obtenus.

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