Tensile Behaviour of Polymer Coated Optical Fibres

It is still arguable ifthe standard testing method for fibre using a mandrel can be used to investigate the tensile behavior of a coated optical fibre. ill this work, the failure mode of an optical fibre with polymer coating was examined using different gripping methods. The results indicated that the tensile behavior of the fibre was closely associated with the gripping methods. If the fibre was only gripped on the coating, the failure was dominated by delamination between the fibre core and the coating due to high shear stress. The maximum failure load was observed in the sample when the gripping point (epoxy drop) was over the fibre core and the end of the coating. The implications of these results on the design of photonic packaging were also discussed.