| abstract |
Optical fiber comprising at least one layer of primary coating, a layer ofnsecondary coating, an intermediate coating layer located between thenprimary coating and the secondary coating layer, the coating layernintermediate comprising a coloring element, the coloring properties of said elementndye being able to be modified by irradiation of the coating layernthrough a laser beam for data recording, the layer ofnsecondary coating being transparent to the laser beam, the coating layernintermediate being fine, that is to say that the thickness of said coating layernintermediate is less than 100nm. |