Optical fiber designed for carrying out of the filters equalizer of the gain of amplifier a fiber doped

摘要

The present invention relates to an optical fiber, characterized by the fact that it comprises a core (10) and a photosensitive cladding (20) with a radiation, with a periodic disturbance of the refractive index of the core (10) and of the photosensitive cladding (20), defining at least a bragg grating according to the inclined with respect to the axis (o - o) of the fiber, in which the refractive index difference between the core (10) and the sheath (20) is less than 3. 10 - 3).