Patent ID: 9477036
Filing Date: 2016-10-25
CPC Classification: B23K,G02B

Claim Text:
1. A post-assembly wavelength-tuning method for an optical filter provided along an optical fiber mounted under tension in a packaging assembly, the packaging assembly including at least one packaging component mechanically coupled to the optical fiber and optically accessible from outside of the packaging assembly, the method comprising: a) measuring a post-assembly spectral response of the optical filter and determining therefrom a spectral deviation with respect to a target spectral response; and b) forming one or more laser-welded zones on the packaging component along at least one of a longitudinal, a circumferential and a helical direction of the packaging component so as to cause a permanent deformation of said packaging component, the permanent deformation inducing a modification in length of the optical fiber and thereby changing the post-assembly spectral response of the optical filter to compensate for the measured spectral deviation.