Method for production of a band with several parallel optical fibers

A method for the production of an optical band, comprising:

• providing a band having a plurality of parallel optical fibers disposed therein;
• introducing light into a first end of the band, thereby providing light to each of the individual optical fibers and simultaneously measuring the individual output intensity of light emitted by each of the individual optical fibers from a second end of the band;
• while light is being introduced into the optical fibers, initiating a process to damage a surface of each optical fiber at a section in such a way that an optical damping of the respective optical fiber is increased in the treated section in a first treatment step;
• for each optical fiber, if the intensity of the output light of said fiber exceeds a defined intensity band, continuing to damage the surface in a further treatment step until the intensity of the output light decreases sufficiently to lie within said defined intensity band;
• and
• discontinuing damaging the surface and discarding the band if the intensity of the output light decreases below the intensity band.