Improvements in and relating to photonic crystal fibres

Details Improvements in and relating to photonic crystal fibres Improvements in and relating to photonic crystal fibres

G - Physics

02

B

G02B 6/10 (2006.01) G02B 6/02 (2006.01) G02B 6/122 (2006.01) G02B 6/255 (2006.01) G02B 6/28 (2006.01) C03B 37/075 (2006.01)

Patent

CA 2362992

A photonic crystal fibre including a plurality of longitudinal holes (220), in which at least some of the holes have a different cross-sectional area in a first region (200) of the fibre, that region having been heat-treated after fabrication of the fibre, from their cross-sectional area in a second region of the fibre (190), wherein the optical properties of the fibre in the heat-treated region (200) are altered by virture of the change in cross-sectional area of holes (230) in that region (200).

L'invention concerne une fibre à cristal photonique comportant plusieurs trous longitudinaux (220) et dans laquelle au moins une partie de ces trous possède une section différente dans une première région (200) de la fibre ayant été traitée thermiquement après fabrication, par rapport à une seconde région (190) de la fibre. Les propriétés optiques de la fibre dans la région traitée thermiquement (200) sont modifiées en raison du changement de la surface de la section des trous (230) dans cette région (200).

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