Method for manufacturing an optical fibre laser

A method for manufacturing an optical fibre laser including an optical fibre having:

• two ends of which a first whereby the light is to be received, and
• a doped section for absorbing at least one portion of the light received via the first end and emitting light, the method including:
• applying a torsion angle to the optical fibre,
• supplying light having a power referred to as the pump power at the first end of the optical fibre,
• checking that the Polarisation Extinction Ratio of the light output from the first end of the optical fibre remains greater than a predetermined value throughout a predetermined range of the pump power, and
• if the Polarisation Extinction Ratio remains greater than the predetermined value throughout the predetermined range of the pump power, attaching the optical fibre to a mechanical mount at two attachment points of the optical fibre situated on either side of the doped section, with the torsion angle applied to the optical fibre.