Methods for improving the optical properties of bragg gratings

Details Methods for improving the optical properties of bragg gratings Methods for improving the optical properties of bragg gratings

G - Physics

02

B

G02B 5/18 (2006.01) G01M 11/02 (2006.01) G02B 6/02 (2006.01)

Patent

CA 2465168

Methods to improve the optical properties of Bragg gratings are disclosed. A first method includes a post correction of the refractive index profile by applying an average index correction thereto. The average index correction is obtained through an analysis of the defects of the refractive index profile characterised Through a reconstruction thereof. A second method includes a pre-correction to the refractive index profile by characterising the defects of a test grating, and again calculating an average index correction based thereon. Further gratings are then made using a corrected refractive index profile.

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