Method for controlling rotation of a winding spool of a proof-testing machine for optical fiber, corresponding system, computer program product and non-transitory computer-readable carrier medium

A system for controlling rotation of a winding spool onto which an optical fiber is wound in a proof-testing machine, said optical fiber being guided in the proof-testing machine at a given line speed from an input pulling device to an output pulling device, then to the winding spool, said input and output pulling device being arranged to subject said optical fiber to a predetermined tensile stress, the winding spool having a rotational speed servo-controlled on the given line speed, the system comprising:

• means for detecting a break between an output point of the input pulling device and between an input point of the output pulling device;
• and
• between an output point of the output pulling device and an input point of the winding spool, a fiber accumulation zone through which passes said optical fiber and which is adapted to accumulate a predetermined fiber length preventing an fiber broken end resulting from the break going beyond the input point of the winding spool,
• a control device configured to controlling the rotational speed of the winding spool to bring it, upon activation of said detecting means, to a complete stop, as a function of the predetermined fiber length.