HIGH BRILLOIN HIGH THICK OPTICAL FIBER AMPLIFIER AND METHOD FOR MANUFACTURING SUCH AMPLIFIER

摘要

According to one aspect, the invention relates to a high-threshold Brillouin threshold optical fiber amplifier comprising: an amplifying optical fiber (16) comprising a core and a sheath, adapted to the amplification of a signal beam propagating in said core; means for coupling a signal beam in an input end of said amplifying optical fiber; coupling means for coupling a pump laser beam for pumping said amplifying optical fiber; a structure (330, 340 ) comprising a deformable part around which at least a part of said amplifying optical fiber is wound in the form of turns, said turns being in contact with a surface of said deformable part, the friction of said optical fiber on said driving surface during the deforming said deformable portion an elongation of said amplifying optical fiber according to a variable elongation profile from one turn to the other.