Method and device for the measurement of the viscoelastic properties of polymeric coatings of optical fibers.

摘要

A method and device are provided for measuring the viscoelastic characteristics of polymeric coatings of optical fibers directly on a coated fiber (3). The ends of the fiber are inserted into a pair of clamps (1, 2) which are shaped in such a way as to engage the coating without tearing it and to allow it to slide longitudinally over the fiber, and are associated with means (4, 5) for imparting them a relative oscillating motion to apply to the coating a longitudinal tensile stress of periodically varying intensity. The clamps and the means to impart them the oscillating motion are part of a rheometer which measures the opposing torque and processes the torque data to give the desired characteristics.