Patent ID: 7155097
Filing Date: 2006-12-26
Classification: B23K,C03B,G02B

Abstract:
1. A preform for a microstructured fibre or a part for a preform for a microstructured fibre, said preform or part having a length in a longitudinal direction and a cross section perpendicular thereto, said preform or part comprising a rod arranged at the center of the preform or part, and one or more tubes concentric to said rod, said rod being sleeved inside a first of said one or more concentric tubes, said rod and/or at least one of said concentric tubes having grooves and/or slits extending in said longitudinal direction, with a number of innermost longitudinally extending grooves and/or slits with respect to the center of the preform or part being at least six, such that said preform or part is adapted for a microstructured fibre.